SPB VTP - High Speed V-Belt Pulleys
SPB High Speed VTP (Ventilated Turbo Pulley) V-belt pulleys are special V-belt pulleys. They are made of cast iron GGG 50.
Compared to common gray cast iron pulleys, they have significantly better properties, higher strength and durability, lower weight, higher peripheral speed.
The pulleys are mounted to the shafts using the Taper bushes.
Pulleys Fields of Use
The VTP® V-belt pulleys are designed for the highest peripheral speeds in all areas of engineering, especially for applications with high temperature, alternating and impact load, and wherever the conventional cast iron V-belt pulleys cannot be used.
They are typically used in compressors, blowers, machine tools, in the paper and chemical industry and in many other machines.
Pulleys Characteristics
- Up to 50% lower weight
- Increased peripheral speed up to 60 m/s (theoretically up to 100 m/s)
- Lower moments of innertia
- Longer V-belt life-span
- Made of cast iron quality GGG 50 of higher strenght
- New CDP (KTL) coating improves rust protection
- Decreased temperature of the belts - up to 17 °C
Pulleys Material
Cast iron GGG 50.
Pulleys Advantages
Pulleys Advantages
Decreased temperature of the belts up to 17 °C
A study demonstrates reduction of temperature of belts in VTP® pulleys up to 10 to 17 °C against standard pulleys. The pulleys have a perforated bottom groove and the heat is drained off the belt better during operation. Punching does not affect the pulley strength.

The tests show that the belts after 2 hours of operation of the VTP® SPB250-4 pulley have a temperature more than 10 °C lower that the standard SPB250-4 pulley.

Pulley Code Description
Example:
SPB 630/4 VTP TB 3525
| Code Part | Description |
|---|---|
| SPB |
Profile |
| 630 |
Nominal diameter of pulley in mm |
| 4 |
Number of grooves |
| VTP |
Ventilated Turbo Pulley high speed |
| TB |
Taper bush |
| 3525 |
Type of Taper busch |
Documents for Download
Dimensions and Parameters of VTP V-Belt Pulleys
TYMA CZ Data Sheets
Czech and English (PDF 365.07 kB)

