SPZ 8 Groove Taper Lock V Belt Pulley | 140-450 mm PCD | CTS

SPZ 8-groove taper lock V-belt pulleys carry eight SPZ belts (9.7 mm top width) on a single hub-mounted sheave, so one drive transmits roughly eight times the power of a single-groove pulley at the same shaft speed. Pitch diameters run from 140 mm to 450 mm, bored for 2517, 3020, 3030 and 3535 taper lock bushes with maximum bores of 60-90 mm. We machine bodies from GG25 cast iron (steel on request), phosphating them for corrosion resistance and checking groove profile, radial runout, and balance before packing. Each size is dimensionally interchangeable with equivalent European and American taper-bore pulleys. Tell us the motor power, driven speed, and shaft diameter, and we will confirm the pulley, bush, and belt set for your application.

For more information or to request a quote on our SPZ V-Belt Pulley or any of our other products, please don't hesitate to contact us. Trust in CTS® expertise and craftsmanship to deliver pulleys that meet your specific requirements and exceed your expectations. 

1. Clean the bore and the bush taper; fit the bush into the pulley with the split aligned to the keyway.

2. Slide onto the shaft and tighten the bush screws in diagonal sequence to the torque stamped on the bush, no more.

3. Align pulleys with a straight edge across both faces; misalignment above 0.5 degrees shortens belt life sharply.

4. Check belt tension after the first 24 hours of running, then every 500 hours.

5. Inspect grooves for wear ridges: a worn groove lets the belt sit too deep and causes slip and heat.

6. Replace the bush if the taper shows fretting marks; never re-machine a worn taper.

For more details on pulley measurement, please refer to the blog: How to Measure a V-Belt Pulley.