H 150 timing pulleys (1 1/2" belt)

H 150 timing pulleys are designed for H belts with a pitch of 1/2" (12.7 mm) and a width of 1 1/2" (38.1 mm). A wider belt carries a higher load at the same pulley diameters, which is why this width is chosen when an H 100 drive is working at the limit of its capabilities.

H 150 timing pulleys - higher load capacity without changing pulley diameters

Moving to a wider belt increases the load capacity of the drive without changing the pulley diameters or the ratio - you do not need to rebuild the machine if there is room for wider pulleys. The belt runs with lower specific pressure on the teeth, so it wears more slowly. Smaller pulleys are made of C45 steel, and larger ones of grey cast iron.

H 150 synchronous pulleys: pilot bore and for Taper-Lock bush

H 150 pulleys in two versions: Pilot bore, with a pilot bore, and Taper-Lock, with a seat for a taper bush. The dimensions of each pulley are given on the product page.

Questions and answers: H 150 timing belt pulleys

Can I replace an H 100 drive with an H 150 drive?

Yes, if there is room in the machine for wider pulleys. Both pulleys and the belt must be replaced - pulleys with the same number of teeth will keep the existing ratio.

Is an H 150 pulley heavier than an H 100?

Yes, it has a wider rim and usually a longer hub. With large pulleys, this is worth taking into account when selecting bearings and the shaft.