VTP - High Speed V-Belt Pulleys
VTP high-speed V-belt pulleys in SPZ, SPA, SPB and SPC profiles are a special type of V-belt pulleys. They are made of cast steel GGG 50 and compared to conventional pulleys made of gray cast iron, they have significantly better properties: higher strength and resistance, lower weight and higher peripheral speed.
The pulleys are mounted to the shafts using Taper Lock cone bushings.
SPZ High Speed VTP
SPA High Speed VTP
Diameter Dm (mm): 63 - 900
SPB High Speed VTP
SPC High Speed VTP
Diameter Dm (mm): 160 - 1250
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 GGG60.
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.
Pulleys 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 |
Pulleys Profile and Dimensions
| Profile | Dm [mm] |
α [°] |
B1 [mm] |
Bm [mm] |
E [mm] |
F [mm] |
C [mm] |
T [mm] |
|---|---|---|---|---|---|---|---|---|
| SPZ | (≤80) >80 | (38) 34 | 9.7 | 8.5 | 12.0 | 8 | 2.0 | 11.0 |
| SPA | (≤118) >118 | (38) 34 | 12.7 | 11.0 | 15.0 | 10 | 2.8 | 13.8 |
| SPB | (≤190) >190 | (38) 34 | 16.3 | 14.0 | 19.0 | 12 | 3.5 | 17.5 |
| SPC | (≤315) >315 | (38) 34 | 22.0 | 19.0 | 25.5 | 17 | 4.8 | 23.8 |
Crown width \(B\): \[B = {E^{(n-1)} + 2 \cdot F}\ {[mm]}\] where \(n\) is the number of grooves.
Other technical data for particular groove dimensions are to be found in the technical documentation.
Documents for Download
Dimensions and Parameters of VTP V-Belt Pulleys
TYMA CZ Data Sheets
Czech and English (PDF 2.05 MB)
Related Products
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Taper Lock bushes with finished metric or inch bore and keyway to fixing components to a mating shaft without using any special tools.
Low electrical conductivity – for compliance with requirements to ISO 1813.
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CONTI VX ADVANCE V-Belts
Narrow V-belts with internal toothing cut from EPDM rubber in XPZ/3VX, XPA, XPB/5VX, XPC and 8VX profiles for highest power and revolutions, with the highest temperature resistance (formerly CONTI-V FO PIONEER).
Measuring Instruments
Our professional-quality special tools and measuring instruments will assist you in maintaining and fitting drive components.
