71 XL 037 (Type 6W, Al Alloy)
Timing Belt Pulley
Pulley Parameters
Pitch diameter of the pulley. It is commonly denoted as Dp or Dp.
Designed for further machining to the final dimension. The pre-drilled hole is therefore not machined to final tolerance for direct use. The size of the pre-drilled hole may vary according to the production batch.
This standardized product may come from different manufacturers. We will provide you with the currently supplied brand upon request.
In the TYMA Product Catalogues you can find this material also described with the abbreviation AL.
Pulley Description
71 XL 037 (Type 6W, Al Alloy) is the basic timing pulley for inch belts with XL trapeziodal profile. It is made of aluminium alloy with a pilot bore. Designed according to ISO 5294.
The pulleys are supplied as a semi-finished product and the internal hole must be modified before mounting the pulleys on the shafts.
Pulley Fields of Use
The XL standard timing pulleys are designed for all types of XL belts with pitch 5.08 mm.
They are typically used in older machines with lower and medium performance, for example in packaging machines, in the ceramic, textile, food and tobacco industry and in many other machines.
In new applications, they are often replaced by HTD, STD or CTD profiles.
Pulley Material
Steel, grey cast iron or aluminum alloy.
Other materials to order.
| Parameter | Standard |
|---|---|
| Surface roughness | ISO 254 |
| Balance quality grade | VDI 2060, ISO 1940 |
Caution
Cast iron pulleys at v < 30 m/s must be balanced.
Documents for Download
Dimensions and Parameters of XL Standard Pilot Bore Timing Pulleys
TYMA CZ Data Sheets
Czech and English (PDF 107.62 kB)
Related Products
XL Inch Sizes Timing Belts
DXL Inch Sizes Double-Sided Timing Belts
Measuring Instruments
Our professional-quality special tools and measuring instruments will assist you in maintaining and fitting drive components.
