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Most of this line consists of SKF hubs that let you mount a taper bushing on a part that was not designed for one. They are steel hubs with the taper seat already machined. You weld or bolt them to a disc, drum, wheel or purpose-built pulley, then fasten the assembly to the shaft with a standard taper bushing. Their part numbers start with PHH.
View all SKF power transmission part numbers →SKF buyer's guide →Power transmission components, all brands →SKF timing belts →SKF sprockets →
The letters after the prefix give the hub style. PHH W12 and PHH WH12 are weld-on hubs with different outer shapes; PHH SM12 and PHH BF12 are flanged bolt-on hubs. The number is the taper bushing size the hub accepts, the same figure you use when ordering the bushing.
The bushing is not included with the hub. You select it afterward, in that size and with the bore that fits your shaft. The line also lists items that follow different logic, such as BT 515-0-13, a ball unit used on transfer tables: identify those by their full part number.
Use a weld-on hub when the part is fabricated in your shop. Center it, tack it and weld evenly so the taper does not distort. Welding from one side only, or laying a heavy bead, twists the seat, and the bushing will not clamp properly. Check centering before the final pass.
Choose a bolt-on hub when the part cannot be welded or must come off. In that case, bolt circle, bolt count and pilot diameter matter. Either way, the hub has to sit square to the shaft; any error later shows up as wobble in the mounted part.
Send the full PHH part number and the quantity. If you do not have it, tell us whether the hub is welded or bolted, which taper bushing size you plan to use and the shaft diameter. Describe the part to be mounted, its diameter and weight, and how much room there is for the hub. If you need the bushing as well, give us the shaft and keyway dimensions.
No. Order the bushing separately in the size the hub requires and with your shaft bore.
It is the taper bushing size the hub accepts.
Only the weld-on series. Flanged hubs bolt on.
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.
SKF BT chains transmit motion between shafts through sprockets in industrial machinery. Their steel construction and standardized pitch and width suit demanding environments. MR Industrial Accessories LLC supplies this line for customers across the United States, Canada, Mexico and South America.
Example part numbers:BT 515-0-13BT 522-0-13BT 530-0-13BT 810-22-13BT 1000-13
The SKF PHH WH line covers links and related parts used with roller chains, whether you are joining a chain, repairing a damaged section or adapting a drive. MR Industrial Accessories supplies this series to maintenance and purchasing teams in the United States and Latin America. Share the part number and our team will get back to you with a quote.
Example part numbers:PHH WH12PHH WH16PHH WH20PHH WH25PHH WH30
SKF PHH WM power transmission components move torque and motion through mechanical drive systems. They appear in production machinery, conveyors, packaging lines and material handling equipment, and they install into existing transmission assemblies without complicating routine maintenance. MR Industrial Accessories LLC supplies this SKF line to customers throughout the United States and in several Latin American countries.
Example part numbers:PHH WM12PHH WM16-1PHH WM16-2PHH WM20PHH WM25
The manufacturer part number is all we need: we'll quote it and share dimensions and equivalents via WhatsApp or email.
