H 300 Taper-Lock timing pulleys

H 300 Taper-Lock timing pulleys are pulleys for the widest H belt (3", i.e. 76.2 mm), mounted on the shaft with a tapered taper bush. They have the largest seats in the whole H profile.

H 300 Taper-Lock timing pulley - stable running of a wide belt

You fit and remove the heavy, wide pulley without a press and without shaft machining, which significantly shortens downtime. Seats for longer bushes connect the pulley to the shaft more firmly and guide it better, so the wide belt runs stably. Smaller pulleys are made of C45 steel, and larger ones of grey cast iron. When changing to a shaft of a different diameter, a new bush is all you need - the pulley stays the same.

H 300 synchronous pulleys with a seat for a longer taper bush

H 300 pulleys with a Taper-Lock seat - the seat size is given in the product name. Bushes of this size can be found in the Bushes category.

H 300 Taper-Lock timing pulleys - customer questions

What does a bush number such as 2517 mean?

The first two digits indicate the bush size, and the last two its length. The bush size must match the seat given in the pulley name.