HTD-3M 90T-120T Timing Belt Pulley Pitch 3mm AF-type With Keyway Width 11mm Relay Verify bore size and keyway

Verify bore size and keyway dimensions against your shaft before ordering

The black melamine surface is waterproof and easy to wipe clean

Please measure your existing belt or calculate from your pulley spacing before selecting a size

squarest cut

see variant options Thread Pitch Standard ISO coarse pitch per size (e

HTD-3M 90T-120T Timing Belt Pulley Pitch 3mm AF-type With Keyway Width 11mm Relay Verify bore size and keywayHTD 3M Timing Belt Pulleys Precise AF Type Drive for CNC, Robotics & Automation When a slipping or misaligned pulley derails your CNC router mid cut or throws off your robot arm's repeatability, the root cause is almost always a pulley that wasn't machined to spec. Engineers, makers, and machine builders who demand consistent tooth engagement and zero backseat motion need a pulley they can trust run after run. These HTD 3M timing belt pulleys are