Engineering Tools

Torque Calculator

Calculate drive torque from power and speed — or vice versa. With formula derivation and unit selection.

Gear Ratio Calculator

Calculate output speed and output torque from input values and gear ratio.

Bearing Life L10

Calculate nominal rolling bearing service life per ISO 281 — with dynamic load rating, load, and speed.

Linear Guide Sizing

Determine static load capacity and safety factor for profiled rail guides.

Spindle Jack Sizing

Determine axial force, travel speed, and motor torque for screw jack gearboxes.

Moment of Inertia Calculator

Calculate mass moment of inertia J for cylinders, discs, cuboids, spheres and ball screws — with reduction to motor shaft and J-ratio traffic light for servo design.

Ball Screw Sizing

Drive torque, Euler buckling load with a safety check and the critical speed — from axial force, root diameter, unsupported length and bearing arrangement.

Magnetic Coupling Sizing

Required transmission torque, slip power as a heat load and the minimum containment shell wall thickness — for permanent magnet and hysteresis couplings.

Gearbox Efficiency Calculator

Overall efficiency across up to four stages, power loss and the self-locking limit — with energy cost and a comparison of two variants.

Rack and Pinion Calculator

Feed force, pinion torque and drive power of a rack and pinion drive — from module, number of teeth, mass, inclination and friction.

Gear Geometry Calculator

Pitch, tip, root and base circle from module and number of teeth — with centre distance and ratio for a gear pair.

Gear Type Selector

Which gear type fits? Selector by load, speed, noise, shaft arrangement and budget — spur, helical, bevel or worm.