SPB V-belt pulleys for BK-RZ bush

SPB V-belt pulleys for BK-RZ bush are pulleys for SPB and XPB belts with a plain bore for a keyless locking bush. The bush connects the pulley to the shaft by friction alone, which is why such pulleys work well where a keyed connection is undesirable and the torque to be transmitted is high.

SPB pulley for BK-RZ - no keyway milling or boring

You do not need to mill a keyway in the shaft or bore out the hole - you insert the bush, align the pulley with the mating pulley and tighten the screws evenly. You can later loosen the connection and move the pulley without damaging the shaft, which makes adjustment and servicing easier.

SPB V-belt pulleys for a keyless locking bush

Single and multi-groove SPB pulleys with a bore for a keyless locking bush, whose diameter is marked in the pulley name as D. Exact dimensions are given on the product page, and bushes can be found in the Keyless locking bushes group.

Questions and answers: SPB pulleys for BK-RZ bushes

How do I choose a bush for the pulley?

The outside diameter of the bush must match the bore diameter D given in the pulley name, and the bush bore - the shaft diameter. The bush is bought separately.