Gearboxes for six-axis robot arm joints: types, ratios and a sizing example
Which reducer goes in which joint of an articulated robot, typical ratios per axis, and a worked torque calculation for a 10 kg payload shoulder join…
Engineering
Sizing guides with worked examples, and application notes showing which gearbox suits which axis. Written by the engineers who size and adapt our gearboxes.
Gearbox simulator
Change tooth counts on an RV, harmonic, planetary or cycloidal gearbox and watch the ratio, output speed and torque update.
Shaft sizes do not match? We make the coupling
Every gearbox can be joined to any motor, robot joint or housing: we machine a custom coupling bored to both shafts, plus an adapter flange if the mounting faces differ. Send both shaft sizes, a drawing or just the motor model number.
Get a custom coupling- Send your requirementMotor model, shaft and pilot sizes, or a STEP/PDF drawing.
- We confirm the designA 2D drawing and quote from our engineers within 48 working hours.
- We machine and assembleCoupling, flange or housing is fitted and tested with the gearbox before dispatch.