The buyer decision around EP-SPZ 355-08 V-Belt Pulley is primarily dimensional. The pulley uses the 9.7 × 8 mm SPZ section, a eight-belt face, P 355 mm and O 359 mm; shaft fit is then constrained by bush 3030 and the listed maximum bore 75 mm.
The eight-belt arrangement is relevant because belt count affects both transmitted capacity and pulley face width. Keep the belt set matched, verify the driver/driven ratio from pitch diameters and confirm that the large-diameter outside diameter fits the guard without forcing a change in center distance.
Engineering data for this configuration
The table is generated from the model metadata imported with this product, keeping the exact P/O, type, bush, maximum bore and construction dimensions together.
| Parameter | Value |
|---|---|
| Profile | SPZ |
| Grooves | 8 |
| Pitch / datum diameter P | 355 mm |
| Outside diameter O | 359 mm |
| Construction type | 5 |
| Taper bush | 3030 |
| Maximum bore | 75 mm |
Where this model enters a drive decision
The document plan highlights compact fans, pumps, machine auxiliaries and space-constrained equipment as recurring markets for narrow V-belt pulleys. For this eight-belt configuration, send machine duty and speed data with the model so the groove count is reviewed as part of belt capacity rather than treated as a marketing attribute.
Installation and replacement checks
After installation, rotate the drive by hand where the machine can be made safe and look for interference, axial runout or uneven belt seating. Recheck the bush fastening after the initial service interval if the machine procedure requires it.
Measure the shaft
Record shaft diameter and key arrangement before ordering the bush/bore combination.
Check ratio and clearance
Use P for ratio; use O and the face/hub dimensions for physical space.
Align the drive
Seat the pulley correctly before belt tension is applied and check both pulley faces.
Buyer questions for SPZ eight-belt pulleys
What should I quote for this exact model?
Use the EP- model above and include shaft diameter, quantity, application, driver speed and driven speed. Add a photo or drawing for replacement work.
Should I calculate with outside diameter?
Use the pitch/datum diameter for the theoretical pulley speed ratio. Outside diameter is mainly a physical-envelope check.
Can the bore be enlarged beyond the listed maximum?
Treat the listed maximum bore as the limit for this catalogue configuration. If the shaft is larger, select a different model/bush arrangement or request an engineering review.
Send the machine interface with the model
Email [email protected] with this EP- designation, shaft diameter, speeds, quantity and any old-pulley reference.
