63 PJ-20 - Unbored (Steel)
Poly-V-Belt Pulley
Price without VAT: 124.26€
Price including VAT: 150.35€ with VAT
Catalogue price excluding VAT:
126.78€
The product is custom-made from a semi-finished product. It cannot be returned or replaced. In accordance with the provisions of § 1837, letter d) of Act No. 89/2012 Coll., the Civil Code (hereinafter referred to as the “Civil Code”), the consumer may not withdraw from a contract of purchase in the sense of the provisions of § 2079 et seq. of the Civil Code, if it concerns a contract on delivery of goods that have been adjusted by request of the consumer or for the consumer, concluded by means of remote communication.
In stock: no
Pulley Parameters
V-pulleys and Poly-V pulleys number of grooves, timing pulleys and sprockets number of teeth.
Face width.
In the TYMA Product Catalogues you can find this material also described with the abbreviation GG.
Pulley Description
63 PJ-20 - Unbored (Steel) are the basic type of poly-V-belt pulleys. They are produced in standard series and dimensions of gray cast iron or they are custom made according to drawings or customer requirements.
Their design is based on ISO 9982 and DIN 7867 standards.
The pulleys are usually mounted on shafts using the Taper bush. Only smaller sizes are supplied as a semi-finished product and the bore must be modified before mounting the pulleys on the shafts.
Pulley Fields of Use
The PJ poly-V-belt pulleys are designed for all poly-V-belts with groove pitch 2.34 mm.
They are typically used in compact compressor drives, blowers, machine tools, pumps, in the paper, chemical and automotive industries, garden technology and in many other machines.
Pulley 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.
Documents for Download
Dimensions and Parameters of PJ Poly-V-Belt Pulleys
TYMA CZ Data Sheets
Czech and English (PDF 181.35 kB)
Manufacturer Profile
The group SIT S.p.A develops, engineers, manufactures and distributes high quality solutions and components for power transmission for industrial applications of excellence worldwide, with the aim of increasing the productivity of its customers’ machines and systems. With operations on 3 continents, SIT manufactures pulleys, rubber and polyurethane belts, drive couplings, locking assemblies and a wide range of accessories.
SIT belongs to a large industrial group that dates as far back as 1838. Today, thanks to over 50 years of specific experience in power transmission and a close-knit team of highly qualified professionals, the Group engages in constant technological innovation in order to offer the best application solutions in mechanical power drives.

