plain bearings

Function Plain bearings support and guide moving components inside the engine. Their primary purpose is to facilitate the virtually wear-free rotation of these components. Plain bearings comprise one or two bearing shells which are locked firmly in place in the bearing seat. The bearing shells wrap around the rotating shaft at the bearing journals.The wear on a plain bearing engine occurs when the engine is first started. On startup there is no oil flow or oil pressure so there is a minute amount of wear before the oil pressure comes up. Plain Bearings with no bushing are usually used for the camshaft in the cylinder head. There are several ways they are used.

Plain Bearings. The earliest blocks used plain bearings, but they have slowly given way to higher-performing bearings. Plain bearings have the least number of moving parts. A long lifespan and low maintenance with heavy load applications are the main benefits of plain bearings.

Bearing Number	Bore Dia	Outer DIa	Width	Size
340 mm x 460 mm x 160 mm LS GEC340HT plain bearings	675	5x8x2	5	8
AST AST650 253340 plain bearings	6804	20x32x7	20	32
160 mm x 165 mm x 80 mm SKF PCM 16016580 E plain bearings	673SSA	3x6x2.5	3	6
60 mm x 75 mm x 50 mm ISB TAPR 560 U plain bearings	68/800	800x980x82	800	980
AST ASTT90 F16080 plain bearings	6705-2RS	25x32x4	25	32
125 mm x 180 mm x 125 mm LS GEEW125ES plain bearings	6417	85x210x52	85	210
AST AST850BM 5050 plain bearings	NN3021K	105x146x41	105	146
82,55 mm x 130,175 mm x 72,24 mm SKF GEZ304ES-2RS plain bearings	6801LLU	12x21x5	12	21
63,5 mm x 68,263 mm x 88,9 mm SKF PCZ 4056 E plain bearings	6800Z	10x19x5	10,000	19,000
AST AST50 24IB08 plain bearings	Cylindrical Bore	Open	Double Row	Symmetric
IKO PHS 22 plain bearings	6844	220x270x24	220	270
INA GE140-AW plain bearings	NJ3234	170x310x110	170	310