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
25 mm x 58,5 mm x 16,5 mm ISB GX 25 SP plain bearings	68/630	630x780x69	630	780
20 mm x 35 mm x 16 mm ISO GE20UK-2RS plain bearings	6709	45x55x6	45	55
100 mm x 105 mm x 115 mm INA EGB100115-E40 plain bearings	6412	60x150x35	60	150
15 mm x 26 mm x 13 mm FBJ GE15XS/K plain bearings	23138-MB-W33	190x320x104	190	320
AST GAC170T plain bearings	6707	35x44x5	35	44
AST SIJK16C plain bearings	6800Z	10x19x5	10	19
ISB GAC 75 CP plain bearings	6313ZZ	65x140x33	65	140
AST GE240XT/X-2RS plain bearings	6802ZE	15x24x5	15	24
AST AST800 2820 plain bearings	6803NKE	17x26x5	17	26
AST AST850SM 2515 plain bearings	6804-2RU	20x32x7	20	32
50 mm x 90 mm x 56 mm IKO GE 50GS plain bearings	673	3x6x2	3	6
240 mm x 340 mm x 140 mm ISO GE 240 ES-2RS plain bearings	6003ZZ	17x35x10	17	35