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Mechanical & Drives
Torque, pulleys, gears, bearings, vibration analysis, springs, bolt torque, lifting and workshop tools. 23 free tools.
Power transmission 10
Torque from power and speedShaft torque from kW or hp and rpm, and power from torque.Pulley speed and belt speed calculatorDriven pulley rpm, speed ratio and belt speed from diameters.Belt length calculatorOpen-belt length and wrap angle from pulley sizes and centre distance.Gear ratio, speed and torque calculatorOutput speed and torque from tooth counts and input.Chain speed and sprocket pitch diameterChain speed and pitch diameter from teeth, pitch and rpm.Conveyor belt speed calculatorBelt speed from motor rpm, gearbox ratio and drive pulley diameter.Ball screw speed and thrust calculatorLinear speed and axial force from screw lead, rpm and torque.Inertia, kinetic energy and run-up timeInertia of a rotor or roller, stored energy and acceleration time.Spur gear dimensions (module) calculatorPitch, outside and root diameters and centre distance from module and teeth.Pulley size for a required speedDriven pulley diameter needed for a target speed.
Bearings & fasteners 5
Bearing L10 life calculatorRated bearing life in revolutions and hours from load and speed.Bolt tightening torque calculatorGuideline torque and preload for metric bolts by size and grade.Bearing speed factor (n·dm) calculatorSpeed factor for grease and oil selection.Bearing grease quantity calculatorHow many grams of grease to add at relubrication.Compression spring rate calculatorSpring rate from wire size, coil diameter and active coils.