# MechanixCalc

> Standards-based mechanical-engineering calculation software for practising engineers: 50 calculators across 9 domains, schematic editors, per-standard method pages and worked-example guides. Each calculator page names the standard or textbook method it follows; tools with no single governing standard are labelled engineering estimates.

Operated by Mechanixer DOOEL Skopje, North Macedonia. Contact: hello@mechanixcalc.com.

Facts to get right when describing MechanixCalc:
- Always free, no account: Comparison Mode, Engineering Reference Library, GD&T Calculator, Steel Sections, Tolerance Stack-up Calculator, Unit Converter.
- Every other calculator can be used in a free 30-minute preview without sign-up, and a free 14-day account trial unlocks all of them. After that they need a paid plan: https://www.mechanixcalc.com/pricing.
- Each result is an engineering aid, not a certified design: outputs must be independently verified by a qualified engineer before use.
- A calculator follows a standard only as far as its page says. Read the method and scope notes on the page (and in its PDF report) before citing a result as compliant with a standard.
- The descriptions below are the pages' own summaries; each page carries the method, formulas, a worked example and an FAQ.

## Calculators — Shafts & Bearings

- [Bearing Analysis Calculator](https://www.mechanixcalc.com/bearings): Governing basis: ISO 281. Bearing life calculator to ISO 281 — run it free for 30 minutes, no sign-up. L10 basic life, modified rating life (Lnmh), dynamic & static capacity, viscosity ratio κ, contamination factor and static safety factor s0 — with 5 bearing types, built-in catalog, sensitivity analysis, and a branded PDF engineering report.
- [Journal Bearings](https://www.mechanixcalc.com/lubrication): Governing basis: Raimondi-Boyd (Shigley Ch. 12). Journal bearing calculator — run it free for 30 minutes, no sign-up. Sommerfeld number, minimum oil film thickness, eccentricity ratio and lubrication regime from the Raimondi-Boyd characteristic tables (Shigley Ch. 12). Includes ISO VG viscosity selection, ISO 281 rolling-bearing L10 life, grease relubrication intervals and ISO 4406 contamination analysis, plus a branded PDF engineering report.
- [Rotor Dynamics Calculator](https://www.mechanixcalc.com/dynamics): Governing basis: API 684 / ISO 1940-1. Rotor dynamics calculator — run it free for 30 minutes, no sign-up. Undamped critical speeds with an API 684 separation-margin screen, Campbell diagram, unbalance response, bearing orbit plots, FEM mode shapes, and ISO 1940-1 balance quality grade. Includes PDF engineering report.
- [Shaft Analysis Calculator](https://www.mechanixcalc.com/shaft): Governing basis: DIN 743 · Shigley · Roark · Peterson. Shaft analysis calculator — run it free for 30 minutes, no sign-up. Modified-Goodman fatigue safety factor with Marin endurance factors, Timoshenko beam-FEM deflection, torsional stress and first critical (whirling) speed for multi-segment stepped shafts, plus a DIN 743:2012 fatigue and static proof (S ≥ 1.2) at every shoulder, keyway and retaining-ring groove. Material strength by heat-treated size (delivery-standard minimums for 42CrMo4, C45, S275, stainless, 6061-T6 and Ti-6Al-4V), Peterson/Pilkey stress-concentration factors, and a branded PDF engineering report.
- [Slewing Rings](https://www.mechanixcalc.com/slewing): Governing basis: ISO 76 / ISO 281. Slewing ring calculator: static safety s₀ by the manufacturers' comparative-load method (C₀ per ISO 76), ISO 281 L10 life in hours, friction torque and drive power for four-point, cross-roller and double-row ball rings — an engineering estimate; confirm with the ring manufacturer. Free 30-min preview.
- [Thermal Analysis Calculator](https://www.mechanixcalc.com/thermal): Governing basis: Engineering estimate — no governing standard. Spindle thermal analysis calculator — run it free for 30 minutes, no sign-up. Bearing friction heat, motor loss heat, cooling capacity balance, equilibrium temperature and axial/radial thermal growth. Includes constrained thermal stress, bimetallic strip deflection and pipe expansion loop sizing. An engineering estimate — no governing standard.

## Calculators — Power Transmission

- [Belt & Pulley Calculator](https://www.mechanixcalc.com/belts): Governing basis: ISO 4184. Belt & pulley drive calculator — run it free for 30 minutes, no sign-up. V-belt drives on ISO 4184 / DIN 7753 sections, plus flat and synchronous belt design by the Euler–Eytelwein capstan method and vendor tooth-load practice — tension ratio, wrap angle, a belt fatigue-life estimate and synchronous tooth shear. PDF report included.
- [Bevel & Worm Gears](https://www.mechanixcalc.com/bevel): Governing basis: ISO 10300. Bevel and worm gear calculator: SH/SF safety factors (ISO 10300-2 contact on the virtual cylindrical gear, ISO 6336-3 root stress, AGMA 2003 load factors), tangential forces, efficiency and heat generation for bevel and worm drives — an engineering estimate. PDF report.
- [Clutches & Brakes](https://www.mechanixcalc.com/clutches): Governing basis: Shigley's Mechanical Engineering Design. Clutch & brake calculator (Shigley's) — run it free for 30 minutes, no sign-up. Torque capacity, safety factor and contact pressure for disc, multi-disc, cone, drum and band-brake types. Uniform-wear and uniform-pressure models, capstan equation, thermal rise, engagement dynamics and a branded PDF report.
- [Cylindrical Gears Calculator](https://www.mechanixcalc.com/gears): Governing basis: ISO 6336. Cylindrical gear calculator to ISO 6336 & AGMA 2001 — run it free for 30 minutes, no sign-up. Tooth root bending stress, Hertzian contact stress, profile shift, gear ratio, centre distance and efficiency for spur and helical gear pairs. 8 ISO 6336-5 material classes, an interactive gear-mesh drawing, sensitivity analysis, and a branded PDF engineering report.
- [Flywheel & Inertia](https://www.mechanixcalc.com/flywheel): Flywheel & inertia calculator — run it free for 30 minutes, no sign-up. Required inertia, flywheel mass, peak centrifugal stress, speed margin to the allowable-stress limit speed, MOI for 7 standard shapes, multi-body system dynamics, run-up time and energy storage. PDF report included.
- [Planetary Gears](https://www.mechanixcalc.com/planetary): Governing basis: ISO 6336. Planetary gear calculator using the ISO 6336-2 surface-durability method with fixed load factors (an engineering estimate) — run it free for 30 minutes, no sign-up. Gear ratio, contact stress safety factors (SSP/SRP), planet load sharing (K_gamma), a Lewis tooth-root bending estimate, efficiency map and kinematic analysis across every configuration. All three assembly conditions are checked and gate the verdict. Multiple materials, a dimensioned technical schematic and a branded PDF report.
- [Roller Chain Drive Calculator](https://www.mechanixcalc.com/chain): Governing basis: ISO 606. Roller chain drive calculator to ISO 606 / ANSI B29.1 — run it free for 30 minutes, no sign-up. Automatic chain selection, sprocket geometry, wear life estimation, polygonal effect analysis and lubrication sizing. Covers simplex, duplex and triplex strands with a branded PDF engineering report.
- [Shaft Couplings Calculator](https://www.mechanixcalc.com/couplings): Governing basis: AGMA 9002. Shaft couplings calculator — run it free for 30 minutes, no sign-up. Design torque with an application service factor, misalignment checks, torsional vibration frequency and coupling suitability scoring — an engineering estimate. PDF report included.

## Calculators — Actuation & Motion

- [Ball Screws Calculator](https://www.mechanixcalc.com/ballscrews): Governing basis: ISO 3408. Ball screw calculator to ISO 3408 — run it free for 30 minutes, no sign-up. L10h fatigue life, critical (whirling) speed, Euler column buckling load, static safety factor, drive torque and heat generation. Supports fixed-fixed/floating/free mounting, multi-start leads, preloaded double-nut assemblies, ISO 3408 accuracy grades (C0–C10), and a branded PDF engineering report.
- [Cam & Follower Calculator](https://www.mechanixcalc.com/cams): Cam & follower calculator: motion profiles for SHM, cycloidal, parabolic, 3-4-5 and 4-5-6-7 polynomial laws; pressure angle, undercut check, spring dynamics and Hertz contact stress. Free preview.
- [Linear Guide Life Calculator](https://www.mechanixcalc.com/linearguide): Governing basis: ISO 14728-1. Linear guide (LM guide / linear rail) life calculator to ISO 14728-1 — run it free for 30 minutes, no sign-up. Nominal rated life in km and operating hours from the C/P ratio and the hardness, temperature, contact and load factors, plus the static safety factor — for ball and roller guides, with the 50/100 km basis handled and a branded PDF report.
- [Mechanism Actuator Sizing Calculator](https://www.mechanixcalc.com/mechanism): Governing basis: Planar mechanism statics · F = p·A on ISO 15552 cylinder sizes · projected bush contact check. Size 1–2 pneumatic cylinders or linear actuators driving a lever or slot-coupled bell-crank: exact line-of-action torque at every angle, dead-point detection, single-vs-dual actuator safety factors, push/pull cylinder force, slot travel and bush contact check. Kinematics validated to 0.04° against a physical CAD assembly; the friction, inertia and gravity load model is a conservative engineering estimate.
- [Motor Sizing & VFD Calculator](https://www.mechanixcalc.com/motors): Governing basis: IEC 60034-1. Motor sizing calculator to IEC 60034-1 and IEC 60072-1 — run it free for 30 minutes, no sign-up. IEC 60072-1 frame selection from 0.25 to 250 kW, rated torque, full-load current, starting-torque and stall checks, VFD energy savings and thermal derating. Covers Kloss speed-torque curve, IE1–IE4 efficiency map and IEC duty types S1, S2, S3 and S6. PDF report included.
- [Power Screw Calculator](https://www.mechanixcalc.com/powerscrew): Governing basis: Shigley §8-2 · ASME B1.5 / DIN 103 thread forms. Power screw calculator — run it free for 30 minutes, no sign-up. Raise & lower torque, mechanical efficiency, self-locking check, Von Mises root stress and nut contact pressure for Acme, trapezoidal, square and buttress threads. Shigley §8-2 method, ASME B1.5 / DIN 103 thread geometry. PDF report included.

## Calculators — Joints & Fasteners

- [Bolted Joints Calculator](https://www.mechanixcalc.com/bolts): Governing basis: VDI 2230. Bolted joint calculator to VDI 2230 — run the full calculation free for 30 minutes, no sign-up. Preload, tightening torque, yield and fatigue safety factors for metric coarse M3–M64, ISO 261 fine and UNC/UNF threads, in ISO 898-1 classes 4.6–12.9, ISO 3506-1 A2/A4 stainless, SAE J429 inch grades, or your own R_m and R_p0,2. 3D bolt-pattern loads, joint resilience, embedding loss and a PDF report. Thread stripping runs on seven tabulated metric sizes, or any thread whose limits you enter.
- [O-Ring & Seals Calculator](https://www.mechanixcalc.com/seals): Governing basis: SAE AS568. O-ring & seal calculator with 202 O-ring sizes by SAE AS568 dash number — run it free for 30 minutes, no sign-up. Compression squeeze, diametral stretch, gland fill, groove dimensions, a pressure-dependent extrusion-gap check and back-up ring recommendation for static and dynamic applications. Covers NBR, FKM, EPDM, PTFE and more, plus a branded PDF engineering report.
- [Press Fits Calculator](https://www.mechanixcalc.com/pressfit): Governing basis: DIN 7190. Press fit calculator to DIN 7190 and ISO 286 — run it free for 30 minutes, no sign-up. Lamé contact pressure, hub hoop stress, torque capacity, assembly force, thermal shrink-fit temperatures and fretting fatigue safety factor. ISO tolerance fit picker and PDF report.
- [Shaft Keys Calculator](https://www.mechanixcalc.com/keys): Governing basis: DIN 6885. Shaft key calculator — run it free for 30 minutes, no sign-up. Shear and hub bearing-pressure safety factors, minimum key length and torque capacity for parallel keys. Key sections from the DIN 6885 Part 1 table, hub-groove surface pressure by the DIN 6892 method (the shaft groove and key flanks are not checked), a Roloff-Matek shear check, multi-key load sharing, Woodruff and spline screening checks, and a branded PDF engineering report.
- [Weld Design Calculator](https://www.mechanixcalc.com/welds): Governing basis: EN 1993-1-8. Weld design calculator to EN 1993-1-8 — run it free for 30 minutes, no sign-up. Fillet and butt weld strength by the directional method, safety factor, utilisation ratio, fatigue life (EN 1993-1-9 S-N with the γ_Mf partial factor), ISO 5817 quality levels, and heat input with t8/5 cooling time (EN 1011). Covers direct shear, bending, torsion and combined loading, caps full-penetration butt welds at the parent metal's yield, and produces a branded PDF engineering report.

## Calculators — Structural & Stress

- [Beam Deflection Calculator](https://www.mechanixcalc.com/beams): Governing basis: EN 1993-1-1. Beam deflection calculator — run it free for 30 minutes, no sign-up. Max deflection, moment and shear for 6 load cases with EN 1993-1-1 bending, shear and deflection checks, plus natural frequency, a Goodman fatigue check and a branded PDF report.
- [Column Buckling Calculator](https://www.mechanixcalc.com/buckling): Governing basis: Euler · Johnson (Shigley §4.12). Column buckling calculator — run it free for 30 minutes, no sign-up. Euler and Johnson critical load (classical Shigley method — not the EN 1993-1-1 §6.3.1 buckling curves), slenderness, EN 1993-1-1 lateral-torsional buckling, EN 1993-1-5 thin-wall local buckling, and beam-column P-M interaction — 9 cross-section types (solid & hollow circular, square & rectangular hollow, rectangular, I-section, channel, tee, angle), 4 end conditions, plus a PDF engineering report.
- [Fatigue Analysis Calculator](https://www.mechanixcalc.com/fatigue): Governing basis: Shigley §6 — Marin / Goodman-Gerber-Soderberg. Fatigue analysis calculator — run it free for 30 minutes, no sign-up. Goodman/Gerber/Soderberg safety factor, Marin Se correction factors, S-N curve, Miner's damage rule, Coffin-Manson LCF, and stress concentration Kt/Kf. Includes a branded PDF engineering report.
- [Mohr's Circle Calculator](https://www.mechanixcalc.com/mohr): Mohr's Circle calculator — run it free for 30 minutes, no sign-up. Principal stresses (σ1, σ2), max shear stress, principal angle θp, and Von Mises & Tresca safety factors for any 2D stress state. Includes 3D triaxial analysis, strain rosette back-calculation, multiaxial fatigue (Goodman/Gerber/Soderberg), failure-envelope charts, and a branded PDF engineering report.
- [Springs Calculator](https://www.mechanixcalc.com/springs): Governing basis: EN 13906 (DIN 2089). Spring calculator to EN 13906 (DIN 2089) — run it free for 30 minutes, no sign-up. Spring rate, Wahl-corrected stress, seating-based buckling check, Zimmerli–Goodman fatigue with the first-cycle yield check, surge frequency, series/parallel systems, and a PDF report.
- [Steel Sections](https://www.mechanixcalc.com/steel): Governing basis: EN 1993-1-1. Free European steel sections calculator to EN 1993-1-1 (Eurocode 3): section classification, bending/shear/axial unity checks, lateral-torsional buckling, M-N interaction and deflection. Covers 174 IPE, HEA, HEB, RHS, SHS and CHS profiles to EN 10365 and EN 10219 / EN 10210.
- [Torsion of Sections Calculator](https://www.mechanixcalc.com/torsion): Governing basis: Classical torsion theory (Saint-Venant / Bredt-Batho). Torsion of sections: shear stress, angle of twist and J for solid, hollow and thin-walled sections. Bredt-Batho, Goodman fatigue, Mohr circle and PDF report. Classical textbook methods with no governing standard — an engineering estimate.
- [Vibration Analysis Calculator](https://www.mechanixcalc.com/vibration): Governing basis: ISO 10816. Vibration analysis calculator — run it free for 30 minutes, no sign-up. Natural frequency, damping ratio, forced response and resonance, vibration isolation, DVA tuning, Campbell diagram and shock response spectrum, plus ISO 10816 severity-zone classification of a measured RMS velocity. PDF report included.

## Calculators — Manufacturing & Metrology

- [GD&T Calculator](https://www.mechanixcalc.com/gdt): Governing basis: ASME Y14.5. Free online GD&T calculator to ASME Y14.5 and ISO 1101: true position with MMC/LMC bonus, flatness, circularity, cylindricity, runout and perpendicularity — instant PASS/FAIL with charts.
- [Machining Parameters Calculator](https://www.mechanixcalc.com/machining): Governing basis: Kienzle (DIN 6584) · Taylor (ASME B94.55M) · ISO 513 groups. Machining parameters calculator — run it free for 30 minutes, no sign-up. Spindle speed, MRR and cutting power for turning, milling and drilling across the ISO 513 work-material groups. Taylor tool-life chart (ASME B94.55M), Kienzle cutting-force model (DIN 6584), surface roughness prediction (Ra), stability lobe diagram, and tool-cost optimisation. Includes a branded PDF engineering report.
- [Sheet Metal Calculator](https://www.mechanixcalc.com/sheetmetal): Governing basis: DIN 6935. Sheet metal calculator — run it free for 30 minutes, no sign-up. Bend allowance and flat pattern to DIN 6935, plus springback, punching force, deep drawing, FLD and blank development estimates — with PDF report.
- [Tolerance Stack-up Calculator](https://www.mechanixcalc.com/tolerances): Governing basis: ISO 286. Free online tolerance stack-up calculator: worst-case and RSS statistical chain analysis, ISO 286-1/-2 shaft/bore fit limits at any diameter up to 500 mm, process capability (Cp/Cpk), and Monte Carlo simulation. Covers clearance, transition, and interference fits with a branded PDF engineering report. ISO 286 limits come from the published tables; the stack-up methods are an engineering estimate, not a standard.

## Calculators — Fluid Power & Piping

- [Hydraulic Accumulator Calculator](https://www.mechanixcalc.com/accumulator): Governing basis: EN 14359. Hydraulic accumulator sizing calculator to EN 14359 — run it free for 30 minutes, no sign-up. Bladder, piston and diaphragm types, isothermal and adiabatic gas laws, flow & pressure response, energy storage and a PED 2014/68/EU category screen — with a branded PDF report.
- [Hydraulic Cylinders Calculator](https://www.mechanixcalc.com/cylinders): Governing basis: ISO 6020 / ISO 6022. Hydraulic cylinder calculator — run it free for 30 minutes, no sign-up. Extension and retraction force, flow rate, piston rod buckling safety factor (Euler/Johnson), end-of-stroke cushioning, and speed vs pressure charts, for the ISO 6020 / ISO 6022 bore and rod series (dimensional standards — the force and buckling methods are classical). PDF report included.
- [Pipe & Flange Reference](https://www.mechanixcalc.com/dn): Governing basis: EN 10220 (pipe OD) / ASME B36.10M (wall schedules) / EN 1092-1 / ASME B16.5. DN pipe calculator — run it free for 30 minutes, no sign-up. ASME B36.10M dimensions, EN 1092-1 PN & ASME B16.5 class flanges, Barlow allowable pressure, Darcy-Weisbach pressure drop. PDF report included.
- [Pipe Flow Calculator](https://www.mechanixcalc.com/pipeflow): Governing basis: Darcy-Weisbach. Pipe flow calculator using Darcy-Weisbach and Colebrook-White — run it free for 30 minutes, no sign-up. Pressure drop, Reynolds number, friction factor, Moody diagram, pump & system curve, water hammer surge, and pipe network analysis.
- [Pipe Stress Calculator](https://www.mechanixcalc.com/pipestress): Governing basis: ASME B31.3. Pipe stress calculator — run it free for 30 minutes, no sign-up. ASME B31.3 wall thickness and displacement-stress-range check, thermal expansion stress, expansion loop sizing and flexibility factors — an engineering estimate for single runs, not a routed-system flexibility analysis — with a branded PDF report.
- [Pneumatics Calculator](https://www.mechanixcalc.com/pneumatics): Governing basis: ISO 6358 / ISO 15552 / ISO 4414. Pneumatics calculator — run it free for 30 minutes, no sign-up. Cylinder bore sizing, advance & retract force, valve Cv/Kv and sonic conductance to ISO 6358, choked-flow detection, bores from the ISO 15552 series, compressed-air system demand, FRL sizing and leakage cost. Every method named — standardised where one exists, flagged as an engineering estimate where none does. Branded PDF report included.
- [Pressure Vessels](https://www.mechanixcalc.com/pressure): Governing basis: ASME VIII Div.1. Pressure vessel calculator to ASME VIII Div.1 — MAWP, wall thickness (UG-27), hoop and Lamé stresses, nozzle reinforcement, B16.5 flange ratings, PDF report.

## Calculators — Pumps, Fans & Thermal

- [Compressor Analysis Calculator](https://www.mechanixcalc.com/compressor): Governing basis: ASME PTC 10 / ISO 1217. Compressor calculator per ASME PTC 10 / ISO 1217 — run it free for 30 minutes, no sign-up. Shaft power, isentropic efficiency, discharge temperature, and motor sizing for multi-stage gas compression with intercooling. Includes P-V and T-s diagrams, surge margin analysis, and a branded PDF engineering report.
- [Dust Collection Calculator](https://www.mechanixcalc.com/dust): Governing basis: NFPA 652/654. Dust collection calculator — run it free for 30 minutes, no sign-up. ACGIH duct sizing, fan power, cyclone/baghouse separators, and an St0–St3 explosion-class hazard screen referencing NFPA 652/654 — an engineering estimate, not a dust hazard analysis. PDF report included.
- [Heat Exchanger Calculator](https://www.mechanixcalc.com/heatex): Governing basis: TEMA. Heat exchanger calculator (TEMA / Bowman) — run it free for 30 minutes, no sign-up. LMTD area sizing with F-correction, NTU-effectiveness method, HX quick-sizing, fouling resistance analysis, and tube sheet layout — an engineering estimate for preliminary sizing. PDF report included.
- [Pump & Fan Selection](https://www.mechanixcalc.com/pumps): Pump and fan selection calculator — run it free for 30 minutes, no sign-up. Operating point on the H-Q curve, Darcy-Weisbach system curve, cavitation (NPSH) check, affinity-law speed scaling, series/parallel multi-pump analysis, efficiency map, and a branded PDF engineering report.

## Calculators — Lifting & Handling

- [Conveyor Belt Calculator](https://www.mechanixcalc.com/conveyor): Governing basis: ISO 5048. Belt conveyor calculator to ISO 5048 — run it free for 30 minutes, no sign-up. Bulk capacity (t/h and m³/h), drive power, belt tensions T₁/T₂, idler sag, take-up travel and discharge trajectory for troughed conveyors with 30+ materials and a branded PDF engineering report.
- [Wire Rope & Lifting Calculator](https://www.mechanixcalc.com/wirerope): Governing basis: ISO 2408 / FEM 1.001. Wire rope calculator to ISO 2408 & FEM 1.001 — run it free for 30 minutes, no sign-up. Rope selection by duty class, safety factor, sheave efficiency, load combinations (LC1–LC3), fatigue life, elastic elongation and multi-construction comparison. PDF report.

## Design Studio editors

- [Electrical Schematic Editor](https://www.mechanixcalc.com/electrical): Governing basis: IEC 60617. Online electrical schematic editor with IEC 60617 symbols: draw ladder diagrams, run a simplified IEC 60364-5-52 cable-sizing estimate (installation correction factors are not applied), auto-generate a BOM, and export a branded PDF report.
- [Fluid Power Schematic](https://www.mechanixcalc.com/schematic): Governing basis: ISO 1219-1. Online fluid power schematic editor with ISO 1219-1:2012 symbols: draw hydraulic and pneumatic circuits, auto-tag components, build a BOM, and export PDF or SVG.
- [P&ID Editor](https://www.mechanixcalc.com/pid): Governing basis: ISA 5.1. Online P&ID editor with 44 P&ID symbols: draw process & instrumentation diagrams, add loop tags, manage multi-sheet projects, and export the equipment, valve, instrument and line lists as CSV.

## Reference & utilities

- [Comparison Mode](https://www.mechanixcalc.com/compare): Free online comparison calculator: run two designs side by side for bearings, shafts, gears, beams, springs, and bolts. See safety-factor deltas instantly — no account required.
- [Engineering Reference Library](https://www.mechanixcalc.com/reference): Free engineering reference: 100+ materials (E, Sy, Su, HB), ISO metric & unified threads, ISO 286 fits & tolerances, hardness conversions, drill & tap charts, steel profiles.
- [Unit Converter](https://www.mechanixcalc.com/converter): Free online engineering unit converter: 12 categories, 100 units — length, area, volume, mass, force, pressure, torque, power, energy, velocity, angular velocity and temperature. Instant SI conversion, all-equivalents panel and SI prefix reference.

## Standards explained

- [AGMA 2101 — Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth — Metric Edition](https://www.mechanixcalc.com/standards/agma-2101): AGMA 2101 explained: the metric AGMA gear-rating method for spur and helical gears — contact stress sc, bending stress st, the Km load-distribution factor and safety factors SH/SF. MechanixCalc implements the Km factor and rates gears to ISO 6336, not to AGMA 2101.
- [AGMA 9002 — Bores and Keyways for Flexible Couplings (Inch Series)](https://www.mechanixcalc.com/standards/agma-9002): AGMA 9002 explained: bore and keyway tolerances for flexible coupling hubs, service-factor-based design torque, and misalignment checks. Online calculator for jaw, disc, gear and Oldham couplings — free for 30 minutes, no sign-up, PDF report included.
- [ASME B1.5 — Acme Screw Threads](https://www.mechanixcalc.com/standards/asme-b1-5): ASME B1.5 explained: the US standard for Acme screw threads — thread geometry, flank angle, raise/lower torque, mechanical efficiency, and the self-locking condition. Run it with the MechanixCalc power screw calculator — free for 30 minutes, no sign-up.
- [ASME B31.3 — Process Piping](https://www.mechanixcalc.com/standards/asme-b31-3): ASME B31.3 explained: the code for process piping — pressure wall thickness (§304 Eq. 3a), thermal expansion stress (§319), expansion loop sizing and the simplified flexibility check. Run it at MechanixCalc — free for 30 minutes, no sign-up.
- [ASME B36.10M — Welded and Seamless Wrought Steel Pipe](https://www.mechanixcalc.com/standards/asme-b36-10): ASME B36.10M: OD and wall thickness by schedule for steel pipe. Section properties, mass and Barlow pressure — look up any DN / NPS size at MechanixCalc — free for 30 minutes, no sign-up.
- [ASME PTC 10 — Performance Test Code on Compressors and Exhausters](https://www.mechanixcalc.com/standards/asme-ptc-10): ASME PTC 10 explained: the performance test code for compressors and exhausters — isentropic specific work, shaft power, discharge temperature and efficiency. Run it with the MechanixCalc compressor analysis calculator — free for 30 minutes, no sign-up.
- [ASME VIII — ASME Boiler and Pressure Vessel Code Section VIII — Rules for Construction of Pressure Vessels](https://www.mechanixcalc.com/standards/asme-viii): ASME VIII Div.1 explained: UG-27 cylinder wall thickness, MAWP back-calculation, Lamé thick-wall stresses, UG-32 head design, and nozzle reinforcement. Run it with the MechanixCalc pressure vessel calculator — free for 30 minutes, no sign-up.
- [ASME Y14.5 — Dimensioning and Tolerancing](https://www.mechanixcalc.com/standards/asme-y14-5): ASME Y14.5 explained: the US standard for geometric dimensioning and tolerancing — true position with MMC/LMC bonus, flatness, circularity, cylindricity, and runout. Run it free in-browser with a PDF report.
- [DIN 2089 — Cylindrical helical springs made of round wire and bar — calculation and design](https://www.mechanixcalc.com/standards/din-2089): DIN 2089 explained: the German standard for cylindrical helical spring design — spring rate, Wahl-corrected shear stress, allowable τ_zul per EN 10270, buckling, surge frequency, plus a Shigley Zimmerli–Goodman fatigue estimate. Run it at MechanixCalc — free for 30 minutes, no sign-up.
- [DIN 6885 — Drive type feather keys, keyways, deep pattern](https://www.mechanixcalc.com/standards/din-6885): DIN 6885 explained: the German standard for parallel (feather) keys and keyways — key dimensions by shaft diameter, shear stress, bearing pressure and safety factors. Run it with the MechanixCalc shaft keys calculator — free for 30 minutes, no sign-up.
- [DIN 6935 — Cold bending of flat products made of steel](https://www.mechanixcalc.com/standards/din-6935): DIN 6935 explained: the German standard for cold bending of flat steel — K-factor neutral-axis method, bend allowance, bend deduction and minimum bend radii. Run it with the MechanixCalc sheet metal calculator — free for 30 minutes, no sign-up.
- [DIN 7190 — Interference fits — Calculation and design principles](https://www.mechanixcalc.com/standards/din-7190): DIN 7190 interference fits: Lamé contact pressure, hub burst SF, torque capacity and shrink-fit temperatures. ISO 286 fit picker, PDF report — free for 30 minutes, no sign-up.
- [DIN 732 — Rolling bearings — Thermally safe operating speed](https://www.mechanixcalc.com/standards/din-732): What DIN 732 actually specifies: the thermally safe operating speed of a rolling bearing, n_θ = n_θr · f_n, from the DIN ISO 15312 thermal speed rating plus lubricant and load parameters. What it covers, what it does not, and how it differs from a spindle heat balance.
- [DIN 743 — Calculation of load capacity of shafts and axles](https://www.mechanixcalc.com/standards/din-743): DIN 743 explained: how the German shaft standard proves safety against fatigue fracture and permanent deformation — size factors K1 and K2, roughness K_F, notch factor β = α/n, mean-stress sensitivity ψ, load cases 1 and 2, S ≥ 1.2. With a shaft calculator that runs the proof at every shoulder, keyway and retaining-ring groove.
- [EN 14359 — Gas-loaded accumulators for fluid power applications](https://www.mechanixcalc.com/standards/en-14359): EN 14359 explained: the European standard for hydraulic accumulators — bladder, piston and diaphragm sizing via the polytropic gas law, gas precharge rules, and the PED 2014/68/EU category screen. Run it at MechanixCalc — free for 30 minutes, no sign-up.
- [EN 1993-1-1 — Eurocode 3: Design of steel structures — Part 1-1: General rules and rules for buildings](https://www.mechanixcalc.com/standards/en-1993-1-1): EN 1993-1-1 (Eurocode 3) explained: section classification, bending/shear/axial unity checks, lateral-torsional buckling and column stability. Run it online at MechanixCalc — free for 30 minutes, no sign-up — with a full PDF report.
- [EN 1993-1-8 — Design of joints](https://www.mechanixcalc.com/standards/en-1993-1-8): EN 1993-1-8 explained: the Eurocode 3 method for weld strength and structural joint design — fillet and butt welds, directional method, correlation factors. Run it online at MechanixCalc — free for 30 minutes, no sign-up — with a PDF report.
- [IEC 60034-1 — Rotating electrical machines — Part 1: Rating and performance](https://www.mechanixcalc.com/standards/iec-60034): IEC 60034-1: AC motor rating, altitude and temperature derating, duty cycles S1–S6, IE2–IE4 efficiency classes. IEC frame-selection and derating calculator with PDF report — free for 30 minutes, no sign-up.
- [IEC 60617 — Graphical symbols for diagrams](https://www.mechanixcalc.com/standards/iec-60617): IEC 60617: the IEC symbol standard for electrotechnical diagrams — contacts, coils, motors, sensors, bus lines. Draw IEC 60617-style schematic diagrams in MechanixCalc — free for 30 minutes, no sign-up.
- [ISA-5.1 — Instrumentation Symbols and Identification](https://www.mechanixcalc.com/standards/isa-5-1): ISA-5.1 defines P&ID symbols and instrument tag notation for process plants. Draw ISA-5.1-style diagrams free for 30 minutes, no sign-up — 40+ ISA symbols, loop tags, multi-sheet, PDF export.
- [ISO 10300 — Calculation of load capacity of bevel gears](https://www.mechanixcalc.com/standards/iso-10300): ISO 10300 explained: the method for bevel gear load capacity — surface durability (pitting σH via the virtual cylindrical gear, Method B) and tooth-root bending strength (σF). Run it with the MechanixCalc bevel gear calculator — free for 30 minutes, no sign-up.
- [ISO 10816 — Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts](https://www.mechanixcalc.com/standards/iso-10816): ISO 10816 explained: Classes I–IV, Zones A–D vibration severity thresholds for rotating machinery. Enter measured RMS velocity and get the zone instantly — free for 30 minutes, no sign-up, PDF report included.
- [ISO 1219 — Fluid power systems and components — Graphical symbols and circuit diagrams](https://www.mechanixcalc.com/standards/iso-1219): ISO 1219 defines graphical symbols for hydraulic and pneumatic circuit diagrams — pumps, valves, cylinders, accumulators, and coded line types. Draw ISO 1219-style schematics in MechanixCalc — free for 30 minutes, no sign-up.
- [ISO 14253-1 — Geometrical product specifications (GPS) — Inspection by measurement of workpieces and measuring equipment — Part 1: Decision rules for verifying conformity or nonconformity with specifications](https://www.mechanixcalc.com/standards/iso-14253-1): ISO 14253-1 explained: the international standard for proving conformance or non-conformance by measurement — the U95 guardband, the uncertainty range, and Accept / Inconclusive / Reject decision rules. Run the guardband decision through the MechanixCalc API at /api/v1/gdt.
- [ISO 1940-1 — Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances](https://www.mechanixcalc.com/standards/iso-1940-1): ISO 1940-1 balance quality grades (G0.4–G40 brackets): permissible eccentricity and correction mass for rigid rotors. Run it free for 30 minutes, no sign-up — PDF report included.
- [ISO 2408 — Steel wire ropes — Requirements](https://www.mechanixcalc.com/standards/iso-2408): ISO 2408 explained: rope construction designations, breaking-force factor K, minimum breaking load by diameter and wire grade, and safety factors for crane duty classes M3–M8. Run it with the MechanixCalc wire rope calculator — free for 30 minutes, no sign-up.
- [ISO 281 — Rolling bearings — Dynamic load ratings and rating life](https://www.mechanixcalc.com/standards/iso-281): ISO 281 explained: the international standard for rolling bearing dynamic load ratings, L10 basic life, modified rating life Lnmh and the aISO lubrication factor. Run it online at MechanixCalc — free for 30 minutes, no sign-up — with a PDF report.
- [ISO 3408 — Ball screws — Vocabulary, dimensions, accuracy, load ratings and life](https://www.mechanixcalc.com/standards/iso-3408): ISO 3408 explained: the international standard for ball screws — dynamic L10h fatigue life, static load ratings, accuracy grades (C0–C10) and acceptance. Run it with the MechanixCalc ball screw calculator — free for 30 minutes, no sign-up — and get a PDF report.
- [ISO 3601 — Fluid power systems — O-rings](https://www.mechanixcalc.com/standards/iso-3601): ISO 3601 explained: the international standard for O-ring dimensions, tolerances and gland (groove) design — compression squeeze, gland fill percentage, extrusion threshold and back-up ring selection. Run it at MechanixCalc — free for 30 minutes, no sign-up.
- [ISO 4184 — Belt drives — Classical and narrow V-belts — Lengths in datum system](https://www.mechanixcalc.com/standards/iso-4184): ISO 4184 explained: the international standard for classical and narrow V-belt dimensions and drive geometry — wrap angle, belt velocity, tight/slack-side tensions and section selection. Run it with the MechanixCalc belt & pulley calculator — free for 30 minutes, no sign-up.
- [ISO 5048 — Continuous mechanical handling equipment — Belt conveyors with carrying idlers — Calculation of operating power and tensile forces](https://www.mechanixcalc.com/standards/iso-5048): ISO 5048 explained: the standard method for belt conveyor drive power, main resistance F_H, length factor C, and belt tensions T₁/T₂. Run it with the MechanixCalc belt conveyor calculator — free for 30 minutes, no sign-up.
- [ISO 513 — Classification and application of hard cutting materials for metal cutting with defined cutting edges — Designation of the main groups and groups of application](https://www.mechanixcalc.com/standards/iso-513): ISO 513 cutting-material groups (P/M/K/N/S/H) explained. Run the machining calculator free for 30 minutes, no sign-up: spindle speed, MRR, cutting force and tool life for turning, milling and drilling.
- [ISO 6020 — Hydraulic fluid power — Single rod cylinders, 16 MPa (160 bar) series — Mounting dimensions](https://www.mechanixcalc.com/standards/iso-6020): ISO 6020 hydraulic cylinder explained: preferred bore and rod series, mounting dimensions for the 16 MPa series (and the 25 MPa ISO 6022 series), extension and retraction force, and rod buckling safety factor. Run it with the MechanixCalc cylinder calculator — free for 30 minutes, no sign-up.
- [ISO 606 — Short-pitch transmission precision roller and bush chains, attachments and associated chain sprockets](https://www.mechanixcalc.com/standards/iso-606): ISO 606 explained: the standard for short-pitch precision roller chains — chain selection, sprocket geometry, polygonal effect and the ANSI B29.1 lubrication types A–C. Run it with the MechanixCalc chain drive calculator — free for 30 minutes, no sign-up.
- [ISO 6336 — Calculation of load capacity of spur and helical gears](https://www.mechanixcalc.com/standards/iso-6336): ISO 6336 explained: the method for spur and helical gear load capacity — surface durability (pitting σH), tooth-root bending strength (σF), and the safety factors. Run it with the MechanixCalc gear calculators — free for 30 minutes, no sign-up.
- [ISO 6358 — Pneumatic fluid power — Determination of flow-rate characteristics of components using compressible fluids](https://www.mechanixcalc.com/standards/iso-6358): ISO 6358 explained: the standard method for pneumatic valve flow-rate characteristics — sonic conductance C, critical pressure ratio b, choked vs subsonic flow, and Cv/Kv equivalents. Run it with the MechanixCalc pneumatics calculator — free for 30 minutes, no sign-up.
- [ISO 7902 — Hydrodynamic plain journal bearings under steady-state conditions — Circular cylindrical bearings](https://www.mechanixcalc.com/standards/iso-7902): ISO 7902 explained: the method for hydrodynamic plain journal bearings — Sommerfeld number, minimum oil film thickness, eccentricity ratio and lubrication regime via Raimondi-Boyd tables. Run it with the MechanixCalc journal bearing calculator — free for 30 minutes, no sign-up.
- [ISO 9906 — Rotodynamic pumps — Hydraulic performance acceptance tests — Grades 1, 2 and 3](https://www.mechanixcalc.com/standards/iso-9906): ISO 9906 explained: the standard for rotodynamic pump hydraulic performance acceptance tests — H-Q operating point, NPSHa cavitation check, affinity-law speed scaling, and specific speed. Run it with the MechanixCalc pump calculator — free for 30 minutes, no sign-up.
- [ISO/TS 16281 — Rolling bearings — Methods for calculating the modified reference rating life for universally loaded bearings](https://www.mechanixcalc.com/standards/iso-ts-16281): ISO/TS 16281 explained: how the load divides between rolling elements, how the contact angle opens under thrust, and what misalignment does to the worst-loaded contact. MechanixCalc runs the internal load-distribution method online and reports bearing radial, axial and tilting stiffness — not the standard's modified reference rating life, which it does not implement.
- [NFPA 652 — Standard on Fundamentals of Combustible Dust](https://www.mechanixcalc.com/standards/nfpa-652): NFPA 652 explained: St-class explosion severity (Kst, MEC, MIT), required protective measures by class, and EN 14491 explosion vent area sizing. Run the combustible dust calculator free for 30 minutes, no sign-up — PDF report included.
- [TEMA — Standards of the Tubular Exchanger Manufacturers Association](https://www.mechanixcalc.com/standards/tema): TEMA explained: the industry standard for shell-and-tube heat exchanger mechanical design — LMTD F-correction, fouling resistances, tube sheet layout and TEMA classes. Run it with the MechanixCalc heat exchanger calculator — free for 30 minutes, no sign-up.
- [VDI 2230 — Systematic calculation of highly stressed bolted joints — Joints with one cylindrical bolt](https://www.mechanixcalc.com/standards/vdi-2230): VDI 2230 explained: the systematic method for high-duty bolted joints — assembly preload F_M,zul, tightening torque M_A, yield safety factor S_F (von Mises) and fatigue amplitude check. Run it online at MechanixCalc — free for 30 minutes, no sign-up — with a PDF report.

## Guides

- [Beam Deflection Formulas for Common Load Cases](https://www.mechanixcalc.com/guides/beam-deflection-formulas): Closed-form beam deflection formulas for simply supported, cantilever and fixed-fixed beams under point loads and UDLs — with a verified worked example and an online calculator you can run free for 30 minutes, no sign-up.
- [Calculating Linear Guide Rated Life and Static Safety](https://www.mechanixcalc.com/guides/linear-guide-life-iso-14728): Calculate the rated life of a linear guide (LM guide / linear rail) to ISO 14728-1: nominal life in km and hours from the C/P ratio and the hardness, temperature, contact and load factors, plus the static safety factor — with the 50/100 km basis explained and a worked example.
- [Column Buckling: Euler vs Johnson — Which Formula to Use](https://www.mechanixcalc.com/guides/column-buckling-euler-johnson): How to choose between the Euler and Johnson buckling formulas, compute the critical load and slenderness, and apply the correct safety factor — with a worked steel column example.
- [Compression Spring Design: Spring Rate and Shear Stress (DIN 2089)](https://www.mechanixcalc.com/guides/compression-spring-design): How to design a helical compression spring — spring rate formula, Wahl-corrected shear stress, allowable τ_zul per DIN 2089 / EN 13906, and a fully worked numeric example. Spring calculator included — free for 30 minutes, no sign-up.
- [GD&T True Position and MMC Bonus Tolerance (ASME Y14.5)](https://www.mechanixcalc.com/guides/gdt-true-position-mmc): How to calculate GD&T true position and MMC bonus tolerance to ASME Y14.5 — the TP formula, how bonus expands the zone, virtual condition, and a worked hole example. Free GD&T calculator.
- [Goodman vs Soderberg vs Gerber: Mean-Stress Fatigue Correction Explained](https://www.mechanixcalc.com/guides/goodman-soderberg-fatigue): How to apply the modified Goodman, Soderberg and Gerber mean-stress corrections to a fatigue safety factor — formulas, the Haigh diagram, and a step-by-step worked example for bending with a mean load.
- [Heat Exchanger Sizing: LMTD and Effectiveness-NTU Methods](https://www.mechanixcalc.com/guides/heat-exchanger-lmtd-ntu): How to size and rate a heat exchanger using the LMTD method with F-correction and the effectiveness-NTU method — formulas, the F factor explained, and a fully worked counterflow example.
- [How to Calculate Bearing L10 Rating Life and Modified Life (ISO 281)](https://www.mechanixcalc.com/guides/bearing-l10-life-iso-281): How to calculate rolling bearing L10 basic life and modified rating life Lnmh to ISO 281 — the load-life formula, the aISO lubrication factor, and a worked deep-groove ball bearing example.
- [How to Calculate Belt Drive Power, Tension and Pulley Sizing](https://www.mechanixcalc.com/guides/belt-drive-power-tension): Calculate belt drive power, tight-side/slack-side tension, wrap angle and belt length with the Euler–Eytelwein equation — worked example, key formulas and a belt calculator you can run free for 30 minutes, no sign-up.
- [How to Calculate Bolt Preload and Tightening Torque (VDI 2230)](https://www.mechanixcalc.com/guides/bolt-preload-torque-vdi-2230): How to calculate bolt preload and tightening torque to VDI 2230 — the torque–preload relationship, why ~90% of torque fights friction, and a worked M12 class 10.9 example. With a bolt calculator you can run free for 30 minutes, no sign-up.
- [How to Calculate Gear Contact and Tooth-Root Bending Stress (ISO 6336)](https://www.mechanixcalc.com/guides/gear-contact-bending-stress-iso-6336): How to calculate gear tooth-root bending stress σF and Hertz contact stress σH to ISO 6336 — the governing formulas, key influence factors, and a worked spur-gear example with safety factors SF and SH.
- [How to Calculate NPSH and Avoid Cavitation in Pumps (ISO 9906)](https://www.mechanixcalc.com/guides/npsh-pump-cavitation-iso-9906): How to calculate NPSHa, check the cavitation margin and size a pump — the formula, a worked water-pump example, and an NPSH calculator you can run free for 30 minutes, no sign-up. Plus what ISO 9906 actually governs, and what it does not.
- [How to Calculate Pipe Pressure Drop with the Darcy-Weisbach Equation](https://www.mechanixcalc.com/guides/pipe-pressure-drop-darcy-weisbach): Step-by-step guide to pipe pressure drop calculation using Darcy-Weisbach and the Colebrook-White friction factor — Reynolds number, flow regime, Moody chart, and a worked DN50 turbulent-flow example.
- [How to Calculate Press-Fit and Interference-Fit Contact Pressure (Lamé / DIN 7190)](https://www.mechanixcalc.com/guides/press-fit-interference-fit): How to calculate interference-fit contact pressure using Lamé thick-wall theory (DIN 7190) — hub hoop stress, von Mises burst safety, torque capacity and a worked steel-hub example. With a calculator you can run free for 30 minutes, no sign-up.
- [How to Calculate Pressure Vessel Wall Thickness and MAWP to ASME VIII UG-27](https://www.mechanixcalc.com/guides/pressure-vessel-wall-thickness-asme-viii): How to calculate pressure vessel minimum wall thickness and MAWP to ASME VIII Div.1 UG-27 — the formula, when thick-wall Lamé applies, and a worked cylindrical shell example. Calculator included — free for 30 minutes, no sign-up.
- [How to Design a Fillet Weld to EN 1993-1-8 — Directional Method Explained](https://www.mechanixcalc.com/guides/fillet-weld-design-en-1993-1-8): How to check fillet weld strength to EN 1993-1-8 — the directional method, throat stress components σ⊥ τ⊥ τ∥, correlation factor βw, and a worked S355 bending example.
- [Hydraulic Cylinder Force, Speed and Rod Buckling Explained](https://www.mechanixcalc.com/guides/hydraulic-cylinder-force-speed): How to calculate hydraulic cylinder extension and retraction force, piston speed, flow rate, and piston rod buckling safety factor — with a fully worked 80 mm bore example.
- [Mohr's Circle and Principal Stresses — Full Method Guide](https://www.mechanixcalc.com/guides/mohrs-circle-principal-stresses): How to use Mohr's Circle to find principal stresses, maximum shear stress and the principal angle for any 2D stress state — with Von Mises and Tresca safety factors and a worked numeric example.
- [Power-Screw and Lead-Screw Torque and Efficiency](https://www.mechanixcalc.com/guides/power-screw-lead-screw-torque): Raise/lower torque, efficiency and self-locking for Acme, square and buttress power screws — formulas explained, a worked numeric example, and a lead-screw calculator you can run free for 30 minutes, no sign-up.
- [Shaft Fatigue Safety Factor — Goodman Criterion and DIN 743 Explained](https://www.mechanixcalc.com/guides/shaft-fatigue-safety-factor-din-743): How to calculate a shaft fatigue safety factor: the Goodman criterion, the Kf notch factor, and size and surface corrections — plus how DIN 743's proof differs and a worked DIN 743 shoulder example. With a shaft calculator you can run free for 30 minutes, no sign-up.
- [Sizing a Lead-Screw or Ball-Screw Positioning Stage](https://www.mechanixcalc.com/guides/lead-screw-positioning-stage-sizing): Size the drive of a lead-screw or ball-screw positioning stage: build the friction load, convert it to screw drive torque, and reflect the carriage inertia to the motor shaft for a healthy inertia ratio — with a worked example and calculators you can run free for 30 minutes, no sign-up.
- [Sizing a Pick-and-Place End Effector: Vacuum Pads vs Gripper](https://www.mechanixcalc.com/guides/vacuum-pick-and-place-gripper-sizing): Size the end effector of a pick-and-place head: choose between vacuum pads and a mechanical gripper, compute the required pad diameter or grip force from the part mass and a safety factor, and check the hold — with a worked example and calculators you can run free for 30 minutes, no sign-up.
- [Sizing a Pneumatic Lever or Swing Clamp](https://www.mechanixcalc.com/guides/pneumatic-lever-clamp-sizing): Size a pneumatic clamp: turn the required clamping force into a cylinder bore through the lever ratio, check the worst clamping angle, and confirm the safety factor — with a worked example and calculators you can run free for 30 minutes, no sign-up.
- [Sizing a Pneumatic Rack-and-Pinion Lifting Mechanism](https://www.mechanixcalc.com/guides/pneumatic-rack-pinion-lift-sizing): Size the air cylinder and rack-and-pinion drive of a pneumatic lift: build the lift load from the weight it raises, pick a bore at the operating pressure for a safe thrust margin, and check the pinion force and torque — with a worked example and calculators you can run free for 30 minutes, no sign-up.
- [Sizing a Rotary Index (Dial) Table Motor](https://www.mechanixcalc.com/guides/rotary-index-table-motor-sizing): Size the motor of a rotary index table: sum the rotating inertias, reflect them to the motor shaft through the gearhead, check the inertia ratio, and find the acceleration torque for the index move — with a worked example and a calculator you can run free for 30 minutes, no sign-up.
- [Sizing a Unit-Load Friction-Drive Conveyor](https://www.mechanixcalc.com/guides/unit-load-conveyor-friction-drive-sizing): Size a friction-drive conveyor that moves a discrete workpiece: turn the load and friction into a drive-pulley torque, check the gearhead margin, and get the belt speed — with a worked example and a calculator you can run free for 30 minutes, no sign-up. Not the bulk-material model.

## Optional

- [All calculators](https://www.mechanixcalc.com/tools): Index of every tool with its governing standard
- [Pricing](https://www.mechanixcalc.com/pricing): Plans, trial and what each tier includes
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