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An SKF timing belt drives by meshing its teeth with the pulley teeth, so it does not slip. It carries the same PHG prefix as the brand's other belts, and its part number packs in three facts: length, pitch and width. Which comes first, and in what unit, depends on the tooth family, and that is where most ordering errors begin.
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In PHG 60-3M-6, the middle block, 3M, is the pitch; the first number is the length and the last is the width, both in millimeters. PHG 145-H-075 and PHG 44-XL-025 use the same order, but H and XL are inch pitches, so length and width are given in inches as well. A 075 is not 75 millimeters.
PHG S8M-480-20 puts the profile first, S8M, followed by length and then width. It shares the 8 millimeter pitch with other families, but its tooth shape is different and it needs a matching pulley. A D in front of the length means teeth on both sides of the belt, which is a separate part number.
A timing belt meshes properly only with pulleys of the same pitch and profile. Two tooth forms with similar pitch can seem to fit when you hold them together and still fail within hours of operation, with teeth sheared off at the root. Before you order, count the teeth on the old belt and measure across three or four teeth to confirm the pitch.
The belt should be no wider than the pulley, and at least one of the two pulleys needs flanges to keep the belt from walking off. Teeth worn on one side only point to misaligned pulleys; fix that before installing the new belt. Set tension to suit the drive, because a timing belt is not tensioned the way a V-belt is.
Send the full PHG part number and the quantity. If the marking is gone, tell us the belt's pitch, tooth count and width, along with the tooth count of each pulley. A side-on photo of the teeth lets us identify the profile. Mention whether the belt was double-sided and what machine it runs on to round out the information.
No. They share the pitch but not the tooth profile, and each needs its own pulley.
For metric pitches, yes. For XL, L and H, width is given in inches.
It will mesh, but it transmits less power. Keep the original width unless the equipment manufacturer says otherwise.
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.
When a drive needs the two shafts to stay in step, a toothed belt does what a friction belt cannot: it transmits motion through meshing teeth instead of grip. The SKF PHG line covers metric pitch profiles for this kind of synchronized duty, and MR Industrial Accessories supplies it within its power transmission range.
Example part numbers:PHG 60-3M-6PHG 60-3M-9PHG 60-3M-15PHG 81-3M-6PHG 81-3M-9
SKF PHG H timing belts are toothed belts that engage pulleys of matching pitch to maintain a constant speed ratio without slipping. They suit drives where exact synchronization is essential, such as in textile, food, and packaging operations. MR Industrial Accessories supplies this line so you can replace worn belts and keep original performance.
Example part numbers:PHG 145-H-075PHG 145-H-100PHG 145-H-150PHG 145-H-200PHG 145-H-300
The manufacturer part number is all we need: we'll quote it and share dimensions and equivalents via WhatsApp or email.
