CalculatorHub — Precision Engineering Calculators

Precision Engineering Suite

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⬡

3D Generator

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STEP · STL · IGES

⚙

Drive Calculator

9 types · ISO/DIN verified

⚙
Harmonic

◈
Cycloidal

◉
Planetary

⊛
RV

—
Timing Belt

∿
Worm

◁
Bevel

↕
Ball Screw

⊟
Rack

30+ output values per calculator

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⚡ Motor Shared Input P = — W

Motor Preset

Calculated Power (W)

Manual override

Rated Speed (RPM)

Rated Torque (N·m)

Peak Torque (N·m)

Max Speed (RPM)

Harmonic Drive Configuration

⚙ Series & RatioInputs

Series Preset

Catalog Ratio N

Configuration

Tooth Module m (mm)

Efficiency η (%)

N_fs (override)

N_cs (override)

Three-Port KinematicsPer ADA259610

IDEAL MODEL — DOCUMENTATION VERIFIED

ω_wg = (N+1)·ω_cs − N·ω_fs

T_wg = T_cs/(N+1) = −T_fs / N

Active: CS fixed → i = N · N_fs = — · N_cs = —

📊 ResultsOutput

—

Gear Ratio

i = N

—

Output Speed

RPM

—

Output Torque

N·m

—

Peak Torque

N·m

—

Output Power

—

Torque Loss

N·m (1−η)

—

Flex Spline PD

—

Circ. Spline PD

—

Wave Gen. Axis

mm ≈ FS PD

—

Efficiency

Harmonic Drive Calculator

Three-port ideal constraint: ω_wg = (N+1)·ω_cs − N·ω_fs. CS fixed (standard): i = N = N_fs/2. Torque: T_fs = N·T_wg·η. PD: PD = N_teeth × m. Ratios 50–320:1. Efficiency 80–90%. Zero backlash. Used in space robotics, surgical systems, cobots.

Cycloidal Drive

⚙ GeometryInputs

Ring Pins N_r

Disk Lobes N_d

Eccentricity e (mm)

Pin Circle R_p (mm)

Roller Radius r_r (mm)

Efficiency η (%)

Stages

📊 ResultsOutput

—

Gear Ratio

—

Output Speed

RPM

—

Output Torque

N·m

—

Peak Torque

N·m

—

Output Power

—

Disk Outer Ø

—

Housing Ø (est.)

—

Pins in Contact

approx.

Cycloidal Drive

Ratio: i = N_r/(N_r−N_d). Torque: T_out = T_in×i×η. Disk OD: D ≈ 2(R_p+r_r+e). Ratios 6–119:1. Efficiency 90–96%. High shock resistance. Robotics, AGVs, positioning.

Planetary Gearbox

⚙ Gear CountsInputs

Sun Teeth Z_s

Planet Teeth Z_p

Ring Teeth Z_r

No. of Planets

Stages

Efficiency η/stage (%)

Configuration

📊 ResultsOutput

—

Total Ratio

—

Ratio / Stage

i_s

—

Output Speed

RPM

—

Output Torque

N·m

—

Output Power

—

Total Efficiency

—

Torque / Planet

N·m

RV Reducer

⚙ RV InputsInputs

Spur Stage Ratio i₁

Cycloidal Pins N_r

Eccentric Cranks

Efficiency η (%)

📊 ResultsOutput

—

Total Ratio

—

Output Speed

RPM

—

Output Torque

N·m

—

Output Power

Timing Belt Drive

— Belt & PulleysInputs

Belt Profile

Pitch p (mm)

Drive Teeth z₁

Driven Teeth z₂

Center Distance C (mm)

Efficiency η (%)

📊 ResultsOutput

—

Speed Ratio

—

Output Speed

RPM

—

Output Torque

N·m

—

Belt Velocity

m/s

—

Belt Pitch Length

—

Teeth in Mesh

z_m

—

Drive PD

—

Driven PD

—

Tangential Force

—

Wrap Angle

degrees

Worm Gear

⚙ Worm GearInputs

Worm Starts n_w

Wheel Teeth Z_g

Module m (mm)

Lead Angle λ (°)

Friction Coeff. μ

📊 ResultsOutput

—

Gear Ratio

—

Output Speed

RPM

—

Output Torque

N·m

—

Calculated η

—

Self-Locking

λ < φ ?

—

Worm PD

—

Wheel PD

Bevel Gear

⚙ Bevel GearInputs

Pinion Teeth Z₁

Gear Teeth Z₂

Shaft Angle Σ (°)

Module m (mm)

Efficiency η (%)

📊 ResultsOutput

—

Gear Ratio

—

Output Speed

RPM

—

Output Torque

N·m

—

Pitch Angle δ₁

degrees

—

Pitch Angle δ₂

degrees

—

Pinion Mean PD

Ball Screw — Rotary to Linear

⚙ Ball ScrewInputs

Lead L (mm/rev)

Screw Diameter d (mm)

Efficiency η (%)

Axial Load F_a (N)

📊 ResultsOutput

—

Linear Velocity

mm/s

—

Linear Velocity

m/s

—

Output Force

—

Required Torque

N·m

—

Lead Angle

degrees

—

Back-drivable

yes / no

Rack & Pinion

⚙ Rack & PinionInputs

Pinion Teeth Z

Module m (mm)

Pressure Angle α (°)

Efficiency η (%)

📊 ResultsOutput

—

Linear Velocity

mm/s

—

Linear Velocity

m/s

—

Rack Force

—

Pinion PD

—

Travel / Rev

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Harmonic Drive Calculator

Cycloidal Drive

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