Poly-V-Belt Pulleys
Poly-V-belt pulleys in PJ, PK, PL and PM profile are the basic type of poly-V-belt pulleys. They are produced in standard series and dimensions of gray cast iron. Their design is based on ISO 9982 (DIN 7867) standards.
The standard pulleys are mounted on shafts using the Taper Lock bushes. Only smaller sizes are supplied as a semi-finished product and the bore must be modified before mounting the pulleys on the shafts.
Pulleys Fields of Use
The poly-V-belt pulleys are designed for all types of poly-V-belts PJ, PK, PL and PM.
They are typically used in compact compressor drives, blowers, machine tools, pumps, in the paper, chemical and automotive industry, garden technology and in many other machines.
Pulleys Material
Fine grey cast iron GG20-GG25.
Other materials to order.
| Parameter | Standard |
|---|---|
| Surface roughness | ISO 254 |
| Balance quality grade | VDI 2060, ISO 1940 |
Notice
The pulleys can be balanced dynamically in two planes on request.
Pulleys Code Description
Example:
200 PJ-8 TB 2012
| Code Part | Description |
|---|---|
| 200 |
Nominal diameter of pulley in mm |
| PJ |
Profile |
| 8 |
Number of grooves |
| TB |
Taper Bush |
| 2012 |
Type of Taper Bush |
Pulleys Profile and Dimensions
| Profile | E [mm] |
Sum of ΔEmax |
α [°] |
F [mm] |
ra, min |
ri, max |
Dm, min |
|---|---|---|---|---|---|---|---|
| PJ | 2.34 ± 0.03 | ± 0.30 | 40 ± 0.5 | 1.8 | 0.20 | 0.4 | 20 |
| PK | 3.56 ± 0,05 | ± 0.30 | 40 ± 0.5 | 2.5 | 0.25 | 0.5 | 45 |
| PL | 4.70 ± 0.05 | ± 0.30 | 40 ± 0.5 | 3.3 | 0.40 | 0.4 | 75 |
| PM | 9.40 ± 0.08 | ± 0.30 | 40 ± 0.5 | 6.4 | 0.75 | 0.75 | 180 |
Crown width \(B\): \[B = {E^{(n-1)} + 2 \cdot F}\ {[mm]}\] where \(n\) is the number of grooves.
Other technical data for particular profiles are to be found in the technical documentation.
Documents for Download
Catalogue of TYMA Pulleys and Clamping Bushes
TYMA CZ Catalogue
Czech and English (PDF 3.64 MB)
Related Products
Taper Lock Bushes
Taper Lock bushes with finished metric or inch bore and keyway to fixing components to a mating shaft without using any special tools.
Poly-V-Belts
Poly-V-belts are V-belts for drives with small pulley diameters, high transmission ratios, high speeds and reverse-tensioning idlers.
Low electrical conductivity – for compliance with requirements to ISO 1813.
CONTI-V MULTIRIB POWER Poly-V-Belts
V-ribbed belts in PL and PM profiles according to ISO 9982 (DIN 7867) with aramid tension members for highest power transmission.
Measuring Instruments
Our professional-quality special tools and measuring instruments will assist you in maintaining and fitting drive components.
