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SKF pulleys carry the PHP prefix and cover two different drives: grooved pulleys, for V-belts, and toothed pulleys, for timing belts. The code says how many grooves or teeth it has, which belt profile it is for and how it is fixed to the shaft. Belts have their own pages; here the pulleys are identified.
See all SKF power transmission references →SKF guide →Industrial pulleys from all brands →SKF timing belts →SKF sprockets →
In PHP 1SPA63TB, the 1 is the number of grooves, SPA is the belt profile and 63 is the pulley diameter in millimetres. PHP 3SPC150TB has three grooves of SPC profile. In PHP 1-B34TB and PHP 1-3V265TB the order is the same, but those profiles express the diameter in the scale of their standard, which is not millimetric.
The final letters indicate the mounting. TB is a pulley for a taper bushing: the bushing is ordered separately and is what defines the bore. In toothed pulleys, such as PHP 20-8M-30TB, the first number is the number of teeth, 8M is the pitch and 30 is the belt width it is made for.
A pulley is replaced because the grooves are worn or because the drive ratio changes. In the first case, the reference stays the same. In the second, changing the diameter alters the machine speed, the belt length and the load on the bearings; it is worth reviewing both pulleys and the centre distance before deciding.
Also check that the pulley profile and the belt profile are the same. A belt of similar section may enter the groove and seat badly. In toothed pulleys, pitch and tooth profile must match those of the belt exactly. The taper bushing is chosen by the size the pulley calls for and by the shaft diameter.
Send us the complete PHP code and the quantity. If you do not have it, state the belt profile, the number of grooves, the outside diameter, the overall width and the shaft diameter with its keyway. For a toothed pulley, the number of teeth, the pitch and the belt width. Tell us whether the current mounting uses a taper bushing, a grub screw or a bore to size, and whether you need the bushing as well.
No. The taper bushing has its own code and is chosen according to the shaft.
It is not advisable. The groove is made for one profile; another section seats badly.
For SPZ, SPA, SPB and SPC profiles, yes. For others it is expressed in the scale of their standard.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
The SKF PHP M RSB timing pulley is a transmission component that mounts on the shaft. It works with a timing belt whose pitch and profile must match the pulley teeth.
Some codes:PHP 10-3M-09RSBPHP 10-3M-15RSBPHP 12-3M-09RSBPHP 12-3M-15RSBPHP 12-5M-09RSB
SKF V-belt pulleys from the PHP line are components for V-belt drives. They are used to transmit power between shafts efficiently and with low maintenance. At MR Accesorios Industriales we sell this SKF line, a brand we carry. If you need a pulley for your equipment, send us the part number on WhatsApp and we will quote you.
Some codes:PHP 1-3V265TBPHP 1-3V280TBPHP 1-3V300TBPHP 1-3V315TBPHP 1-3V335TB
SKF V-belt pulleys from the PHP line with SPB profile and TB taper bushing are components for V-belt drives. They are used to transmit power between shafts efficiently and with low maintenance. MR Accesorios Industriales sells this line, backed in the industrial sector.
Some codes:PHP 1SPB100TBPHP 1SPB106TBPHP 1SPB112TBPHP 1SPB118TBPHP 1SPB125TB
Just the manufacturer part number is enough: we will quote it and provide dimensions and equivalents via WhatsApp or email.
