Motion control sizing calculators
Use transparent, browser-based calculations to prepare an enquiry. Every tool includes its method, units, an illustrative worked example and the checks it leaves unresolved.
Servo RMS torque calculator
Calculate time-weighted RMS torque, peak magnitude and cycle time from torque-and-time segments. Carry the figures into a motor sizing enquiry.
Open the calculator →Gearbox ratio, torque and inertia calculator
Estimate output torque and speed through reduction gearing, plus load inertia reflected to the motor. Check assumptions before choosing a gearbox.
Open the calculator →Linear actuator force and screw torque calculator
Estimate one upward-motion load case, screw torque, screw speed and mechanical output power. Prepare the figures for an actuator selection enquiry.
Open the calculator →Use the tools in the selection sequence
Start with the mechanism and the movement required. Identify the operating points, force or torque and time spent at each condition. Use the tools to understand individual relationships before selecting a product from the catalogue. A result with the right units is not automatically a complete design.
For a repeating servo duty, combine the known motor-shaft torques using the RMS tool. For a reduction gearbox, explore speed, estimated torque and reflected load inertia. For a screw-driven actuator, estimate one upward motoring load case and the screw torque and speed associated with it.
Keep the assumptions with the result
Replacing an example value with a guessed efficiency or load does not make the calculation verified. Include the source of your inputs and identify uncertain figures when sending an enquiry. Manufacturer curves, mechanical ratings, installed cooling, life and the complete machine requirements still need checking.
Tools do not require an account and make no AI calls. Calculation inputs remain in the browser until you choose to add them to an enquiry and submit your contact details. The examples are hypothetical, not customer projects or engineer endorsements.
Request sizing support · Find checklists and manufacturer resources