SKF bushing range nomenclature has a defined prefix of PHF. The bushing range is covered by limited standards, but main SKF range is interchangeable with other brands.
Bushings The bushing range designation from SKF has the following is an example to indicate set up
Bushings and Hubs (PHF Product Group) SKF Taper bushings, QD bushings, Weld-on and Bolt-on hubs are manufactured according to established market standards and are fully interchangeable with other brands. Metric bore keyway machined according to BS 4235: Part 1 and DIN 6885. Imperial bore keyway machined according to BS 46: Part 1. Phosphate coating and blackening are used to improved corrosion resistance, excluding FX bushings.