OPTIBELT V-Belt Pulley SPB 355/2 Taper Lock 3020 – 2-Groove Cast Iron Sheave

Optibelt V-Belt Pulley SPB 355-2 for 3020 Taper Bush

Description

This is a robust V-belt pulley from Optibelt, model SPB 355-2, designed for use with a 3020 taper lock bush. The pulley features a pitch diameter of 355 mm and is equipped with two grooves for SPB-profile V-belts. Made from high-grade cast iron, this pulley ensures reliable and durable power transmission in various industrial applications. Order now from spareparts2day for expert support and fast delivery.

Specifications

• Type: V-Belt Pulley
• Brand: Optibelt
• Pitch Diameter: 355 mm
• Number of Grooves: 2
• Belt Profile: SPB
• Taper Bush Size: 3020
• Material: Grey Cast Iron (EN-GJL-200/250)

Label Info

• Manufacturer: Optibelt
• Model: SPB 355-2 3020
• Casting Number: SPB355-02

Application

Ideal for use in industrial drive systems, including fans, pumps, conveyors, and agricultural machinery, where reliable torque transfer is essential.

Country of Origin

Germany

CO2 Impact

By reusing this component, you help avoid the production of a new one, saving an estimated 31.0 kg of CO2. This is comparable to the emissions saved by driving 155 kilometers in a standard passenger car.

Availability

This item is in stock and ready for immediate dispatch.

FAQ

What is the difference between SPB and other V-belt profiles like SPA or SPC?

The letters (A, B, C) refer to the cross-sectional size and power rating of the belt. SPA has a top width of 13mm, SPB has 17mm, and SPC has 22mm. The SPB profile is a ‘narrow V-belt’ designed for higher power transmission and speeds compared to classical V-belts of similar width.

How do I correctly install a 3020 taper lock bush with this pulley?

First, ensure the bore and bush are clean. Slide the bush into the pulley hub, aligning the holes. Lightly oil the threads of the grub screws and insert them. Slide the assembly onto the shaft, position it, and then tighten the screws alternately and evenly until the specified torque is reached, ensuring the pulley runs true.

What is the maximum speed (RPM) for this SPB 355-2 pulley?

The maximum permissible speed depends on the balancing grade and application. For a standard cast iron pulley of this size (355mm diameter), a typical maximum rim speed is around 35-40 m/s, which translates to approximately 1900-2100 RPM. Always consult the manufacturer’s technical datasheet for precise limits.

Current Date: Friday, March 13, 2026

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