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
120 mm x 190 mm x 105 mm LS GE120XS/K plain bearings	6338	190x400x78	190	400
120 mm x 180 mm x 38 mm LS GAC120S plain bearings	6800-2RS	10x19x5	10	19
50 mm x 75 mm x 43 mm SIGMA GEM 50 ES-2RS plain bearings	NJ407+HJ407	35x100x25	35	100
AST AST11 6050 plain bearings	6707	35x44x5	35,000	44,000
LS SK40ES plain bearings	31310M	X31310M	METRIC	Stamped Steel
4 mm x 14 mm x 7 mm ISB GEG 4 C plain bearings	6708	40x50x6	40	50
20 mm x 23 mm x 30 mm SKF PCM 202330 M plain bearings	6702LLF	15x21x4	15	21
63,5 mm x 100,013 mm x 55,55 mm FBJ GEZ63ES-2RS plain bearings	6800ZZ	10x19x5	10	19
AST GEG17ES plain bearings	NJ304-E-TVP2	20x52x15	20	52
INA GE80-LO plain bearings	6301-2Z	12x37x12	12	37
24 mm x 27 mm x 30 mm INA EGB2430-E40 plain bearings	672	2x4x1.2	2	4
Toyana SIL18T/K plain bearings	NAS 5032ZZNR	160x240x109	160	240