Plain bearings

Plain bearings are cylindrical bushings placed between a shaft and its housing to reduce friction and wear, and they support radial loads in rotating or oscillating movements. They are manufactured in bronze, sintered bronze, and composite materials, with or without a flange. They are selected based on shaft diameter, load, speed, temperature, and type of lubrication.

In SKF, the three dimensions are in the code, in millimeters and in two digits: PBM 202820 M1G1 is 20 × 28 × 20 (bore, outside diameter, and length) and PBM 506050 M1G1 is 50 × 60 × 50. The F in PBMF 253525 M1G1 and PBMF 304030 M1G1 indicates a flanged bushing. OR-BPG-0294 K and REXNORD designations, such as 701-66004-024, Duralon, or Rex RPT, are specific to each series and must be ordered complete.

Depending on the material, the bushing works with external lubrication or is self-lubricating, which defines maintenance. They are used in agricultural machinery, transmission equipment, hydraulic systems, articulations, and oscillating motion guides, where a compact solution is needed.

We work with SKF and REXNORD plain bearings. Send us the complete code or the bore diameter, outside diameter, and length via WhatsApp or email, and if you have the equivalent from another brand, include that too. We will indicate the corresponding reference and provide a quote promptly.