Plain bearings

A plain bearing is a cylindrical bushing that sits between a shaft and its housing to cut friction and wear, carrying radial load in rotating or oscillating motion. They come in bronze, sintered bronze and composite materials, with or without a flange. Shaft diameter, load, speed, temperature and lubrication method guide the choice.

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

Some materials need external lubrication and others are self-lubricating, which sets the maintenance routine. Plain bearings are found in farm machinery, power transmission equipment, hydraulic systems, pivots and oscillating guides, wherever a compact solution is needed.

Brands we carry for plain bearings: SKF and REXNORD. Send the complete part number, or the bore, outside diameter and length, by WhatsApp or email, and include another brand's part number if you have one. We'll identify the matching part and quote promptly.