SPA pilot bore V-belt pulleys

SPA pilot bore V-belt pulleys are pulleys for SPA and XPA belts with a pilot bore that you bore out to the shaft diameter and add a keyway to. They work well where the shaft has a non-standard size or the pulley is to replace a factory pulley mounted on a key.

SPA pilot bore pulleys - you pay only for the pulley, no bush

You pay only for the pulley - no bush or additional clamping parts. You make the bore exactly for your shaft, so the connection is secure and durable, and the pulley can be fitted in place of the old one without changes to the machine design. Standard-compliant grooves accept SPA or XPA belts from any manufacturer.

SPA V-belt pulleys with a pilot bore, single and multi-groove

Single and multi-groove SPA pilot bore pulleys in various diameters, from motor pulleys to large driven pulleys. The diameter and number of grooves are given in the name, and exact dimensions - on the product page.

Questions and answers: SPA pilot bore V-belt pulleys

When should I choose a pilot bore pulley instead of a bush-mounted pulley?

When the pulley is to remain on the shaft permanently or when it is hard to find a bush for the shaft diameter. If the pulley will be removed often, an SPA Taper-Lock pulley will be more convenient.