Brand We Carry
SKF sheaves and pulleys carry the PHP prefix and serve two kinds of drive: grooved sheaves for V-belts and toothed pulleys for timing belts. The part number tells you the groove or tooth count, the belt profile and how the part attaches to the shaft. Belts are covered on their own pages; this one is about identifying the sheave or pulley.
View all SKF power transmission part numbers →SKF buyer's guide →Industrial sheaves and pulleys, all brands →SKF timing belts →SKF sprockets →
Take PHP 1SPA63TB: 1 is the groove count, SPA the belt profile and 63 the diameter in millimeters. PHP 3SPC150TB has three SPC grooves. PHP 1-B34TB and PHP 1-3V265TB follow the same order, but for those profiles the diameter is given on the scale of their own standard, not in millimeters.
The closing letters describe the mounting. TB means the sheave takes a taper bushing, ordered separately, and the bushing sets the bore. On timing pulleys such as PHP 20-8M-30TB, the first number is the tooth count, 8M is the pitch and 30 is the belt width it is built for.
You replace a sheave either because the grooves are worn or because you want a different drive ratio. For worn grooves, the part number stays the same. For a new ratio, a different diameter changes machine speed, belt length and bearing load, so review both sheaves and the center distance before you decide.
Make sure the sheave and the belt have the same profile. A belt with a similar section can drop into the groove and still seat poorly. On timing pulleys, the pitch and tooth profile must match the belt exactly. Choose the taper bushing by the size the sheave calls for and by the shaft diameter.
Send the full PHP part number and quantity. Without it, give us the belt profile, groove count, outside diameter, overall width and shaft diameter with keyway. For a timing pulley, the tooth count, pitch and belt width. Let us know whether the current part mounts with a taper bushing, a setscrew or a finished bore, and whether you need the bushing too.
No. The taper bushing has its own part number and is chosen for the shaft.
We don't recommend it. Each groove is cut for one profile, and a different section will seat poorly.
Yes for SPZ, SPA, SPB and SPC profiles. Other profiles use the scale of their own standard.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
The SKF PHP M RSB is a timing pulley that fits onto a shaft and drives a matching timing belt. Tooth geometry on the pulley and on the belt have to correspond, so the complete code matters when you specify or replace this part.
Example part numbers:PHP 10-3M-09RSBPHP 10-3M-15RSBPHP 12-3M-09RSBPHP 12-3M-15RSBPHP 12-5M-09RSB
SKF PHP V-belt pulleys are used in belt drives to transfer power between shafts. They are part of the SKF line that MR Industrial Accessories supplies to maintenance and purchasing teams across the United States and Latin America. To request a quote, send the part number by WhatsApp or email.
Example part numbers:PHP 1-3V265TBPHP 1-3V280TBPHP 1-3V300TBPHP 1-3V315TBPHP 1-3V335TB
SKF PHP SPB TB V-belt pulleys belong to the PHP range and use the SPB belt profile with a TB taper bushing. They transfer power from one shaft to another in V-belt drives, with simple upkeep. MR Industrial Accessories supplies this line to plants and maintenance teams.
Example part numbers:PHP 1SPB100TBPHP 1SPB106TBPHP 1SPB112TBPHP 1SPB118TBPHP 1SPB125TB
The manufacturer part number is all we need: we'll quote it and share dimensions and equivalents via WhatsApp or email.
