SPC pilot bore V-belt pulleys

SPC pilot bore V-belt pulleys are pulleys for SPC and XPC belts with a pilot bore that you bore out to the shaft diameter and add a keyway to. They let you mount a large pulley on a heavy machine shaft without a bush, as in many factory-built drives.

SPC pilot bore pulley - a bore for an imperial or non-standard shaft too

You make the bore exactly for your shaft, including non-standard or imperial diameters, so the pulley can replace a worn one without changes to the drive design. A keyed connection copes well with high torques and needs no additional parts, and standard-compliant grooves accept belts from any manufacturer.

SPC V-belt pulleys with a pilot bore in various diameters

Single and multi-groove SPC pilot bore pulleys in various diameters. The diameter and number of grooves are given in the pulley name, and exact dimensions - on the product page. The largest SPC pulleys can be found in the SPC Taper-Lock pulleys group.

Frequently asked questions about SPC pilot bore V-belt pulleys

Does the pulley need balancing after machining?

At high speeds it is worth checking the balance after boring out the hole and cutting the keyway - a large, heavy pulley with even a slight imbalance can cause vibration of the whole machine.