Timing pulley PolyChain GT 14M z=140 for 20 mm belt, for Taper-Lock 3020

Product Description

Timing pulley PolyChain GT 14M z=140 for 20 mm belt, for Taper-Lock 3020 is a synchronous pulley with PolyChain GT 14M teeth (pitch 14 mm), designed for a belt 20 mm wide. Number of teeth: 140. The pulley has teeth matched to PolyChain GT belts with a pitch of 14 mm, designed for high-power drives with a narrow belt.

The pitch diameter is 623.89 mm and the outside diameter 621.09 mm. The pulley has a seat for a Taper-Lock 3020 clamping bush (bush sold separately) - the bush bore is chosen to suit the shaft, up to 75 mm, without boring the pulley.

Technical data

Applications

Replacement for chain drives and multi-groove V-belt drives in industrial, paper and agricultural machinery.

Frequently asked questions

Which timing pulley has the PolyChain GT 14M profile, 140 teeth and a pitch diameter of 623.89 mm?

This is the timing pulley PolyChain GT 14M z=140 for 20 mm belt, for Taper-Lock 3020. The outside diameter (over the tooth tips) is 621.09 mm. The pitch diameter is calculated as Dp = pitch × z / π = 14 × 140 / π.

Which timing belt fits this pulley?

A PolyChain GT 14M belt 20 mm wide. Standard HTD belts are not used with this pulley because the tooth shape is different.

Does this pulley work with an HTD 14M belt?

No. The PolyChain GT tooth shape differs from HTD, so the pulley and the belt must have the same PolyChain GT profile and the same pitch.

Which Taper-Lock bush do I need for this pulley?

A Taper-Lock 3020 bush. The bush is bought separately and its bore is chosen to match the shaft diameter - up to 75 mm for this pulley. The bush clamps onto the shaft when the screws are tightened, so the pulley does not need to be bored and removal is easy.

How do I calculate the ratio of a drive with this pulley?

The ratio is the number of teeth of the driven pulley divided by the number of teeth of the driving pulley, e.g. 140 / 18 = 7.78. A timing belt drive has no slip, so the ratio is constant.

What does the lead time depend on?

When ordering, please check the current stock level of this pulley - the lead time depends on it and is clearly stated according to the quantity available in each warehouse. The stock level is shown above the product price and may differ between warehouses.

Product photos are for illustration purposes only.