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
AST ASTT90 8050 plain bearings	68/600	600x730x60	600	730
SKF SCF30ES plain bearings	6801	12x21x5	12	21
AST AST850SM 3820 plain bearings	6706ZZ	30x37x4	30	37
AST SI8C plain bearings	6703ZZ	17x23x4	17	23
40 mm x 105 mm x 27 mm LS GX40T plain bearings	6800VV	10x19x5	10	19
70 mm x 105 mm x 49 mm INA GIR 70 UK-2RS plain bearings	184120/184200H	120x200x108	120	200
AST GEGZ114HS/K plain bearings	6800LLB	10x19x5	10	19
750 mm x 1060 mm x 530 mm LS GEH750HF/Q plain bearings	6800DD	10x19x5	10	19
440 mm x 600 mm x 218 mm INA GE 440 DW-2RS2 plain bearings	NNF5019ADA-2LSV	95x145x67	95	145
40 mm x 62 mm x 40 mm LS GEEW40ES plain bearings	6800ZZ	10x19x5	10	19
AST GEG20ES-2RS plain bearings	6706LLF	30x37x4	30	37
360 mm x 480 mm x 160 mm LS GEC360HC plain bearings	66/1280F1	1280x1560x150	1280	1560