OPTIBELT SPZ315-03 2517 V-Belt Pulley

Optibelt V-Belt Pulley for Taper Bush Mounting

Description

The Optibelt SPZ315-03 is a premium-grade V-belt pulley engineered for reliable performance in demanding industrial power transmission systems. This pulley is constructed from high-quality grey cast iron, ensuring excellent durability and wear resistance. It is designed for use with SPZ profile V-belts and features a pre-bored hub to accept a 2517 taper lock bush for fast, simple, and secure shaft mounting.

Specifications

• Manufacturer: Optibelt
• Part Number: SPZ315-03
• Belt Profile: SPZ
• Number of Grooves: 3
• Pitch Diameter: 315 mm
• Outside Diameter: 320 mm
• Bore Type: Taper Bore for Bush 2517
• Material: Grey Cast Iron (EN-GJL-200)

Label Info

• OPTIBELT
• SPZ315-03
• 2517

Application

This pulley is suitable for a wide range of applications, including conveyor systems, industrial fans, pumps, compressors, and general machinery where efficient and reliable power transmission is critical.

Country of Origin

Germany

CO2 Impact

Opting for this pre-owned component avoids approximately 13.4 kg of CO2 emissions compared to manufacturing a new one, contributing to a more sustainable industrial operation.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the function of the ‘2517’ number on this pulley?

‘2517’ refers to the size of the Taper Lock Bush required to mount this pulley onto a shaft. This system allows for easy installation and a strong, concentric grip on various shaft diameters, depending on the bore of the 2517 bush selected.

What is the maximum permissible speed for the SPZ315-03 pulley?

The maximum permissible peripheral speed for a standard cast iron Optibelt pulley like this is typically 30 m/s. Exceeding this speed can be dangerous and requires dynamically balanced pulleys made from different materials. Always consult the manufacturer’s technical datasheet for your specific application.

How do I correctly install and tension an SPZ belt on this pulley?

Proper installation involves cleaning the bore and bush, mounting the pulley onto the shaft, and inserting the taper bush. Tighten the screws evenly until the specified torque is reached. For tensioning, use a tension gauge to ensure the SPZ belt is at the correct tension recommended by Optibelt. Incorrect tension can lead to premature wear of both the belt and pulley.

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Last Update: Friday, March 13, 2026