Timing belt pulley PolyChain GT PC 8M 21 z=140 for Taper-Lock bush 3020
Available product promotions:
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Weight19,2kg
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UPC Code5907009327105
Product Description
Timing belt pulley PolyChain GT PC 8M 21 z=140 for Taper-Lock bush 3020 - for HTD 8M / PolyChain GT belts with a pitch of 8 mm (HTD). Made of C45 steel with a profile optimised for Gates PolyChain GT polyurethane belts.
The Taper-Lock system eliminates the need to bore out the hub. The bush slides into the tapered seat of the pulley and, after the screws are tightened to a torque of approx. 80 Nm, it clamps onto the shaft without a press or special tools. Removal is just as simple - one screw inserted into the removal hole pushes the bush out without risk of damaging the shaft.
Typical applications: industrial drives, heavy machinery, production lines.
When ordering, please check the lead time - it is shown directly next to the product's stock level.
PolyChain GT pulley 8M 21 mm, 140 teeth - Taper-Lock 3020
| Parameter | Value |
|---|---|
| Series / profile | 8M - HTD rounded |
| Pitch | 8 mm (HTD) |
| Belt width | 21 mm |
| Number of teeth (z) | 140 |
| Pitch diameter Dp | 356.51 mm |
| Outside diameter De | 354.91 mm |
| Flange diameter Df | 150 mm |
| Max. bush bore Di | 324 mm |
| Pulley width F | 30 mm |
| Hub length L | 51 mm |
| Mounting | Taper-Lock 3020 (sold separately) |
| Material | C45 steel (PolyChain GT) |
| Weight | 10.5 kg |
FAQ
How does PolyChain GT differ from an HTD 8M pulley?
The pitch is identical (8 mm), so the pulleys have the same overall dimensions - but the tooth profile is optimised for the Gates PolyChain GT polyurethane belt. PolyChain and HTD 8M pulleys are not interchangeable - use only PolyChain pulleys with a PolyChain belt.
Can I use an HTD 8M belt on a PolyChain GT pulley?
We do not recommend it. The tooth profile of a PolyChain pulley differs from that of a conventional HTD pulley - the belt will fit on the pulley but will not sit optimally in the teeth, which will shorten its service life and may lead to tooth skipping under load.
How do I mount the pulley on a Taper-Lock bush?
The bush is inserted into the tapered seat of the pulley, placed on the shaft and the screws are tightened to a torque of approx. 80 Nm. The pulley is ready in a few minutes, without a press or special tools.
How do I choose the Taper-Lock bush number?
The bush number (3020) is assigned to the pulley and determines the size of the seat. You only choose the bore diameter of the bush to suit your shaft. The maximum bore for this pulley is 324 mm.
Product Features
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Weight19,2kg
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UPC Code5907009327105