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 AST850BM 8080 plain bearings	572791B	27x66x18.5	27	66
20 mm x 42 mm x 25 mm IKO GE 20GS-2RS plain bearings	51292	460	615	460 mm
AST AST850SM 2020 plain bearings	68/950/1200	950x1200x90	950,000	1200,000
AST ASTT90 F13090 plain bearings	NJ410 M	50x130x31	50	130
Toyana SI06T/K plain bearings	6416	80x200x48	80	200
AST AST20 32IB32 plain bearings	6320 M	215x100x47	215	100
Timken 120FSH210 plain bearings	68/950	950x1150x90	950	1150
AST GEGZ63ES plain bearings	68/670	670x820x69	670	820
Toyana SIL 20 plain bearings	GEK40XS-2RS	40x90x64	40	90
300 mm x 430 mm x 165 mm INA GE 300 DO-2RS plain bearings	6800LUZ	10x19x5	10,000	19,000
AST AST650 6075100 plain bearings	6911ZZ	55x80x13	55	80
340 mm x 480 mm x 243 mm LS GEH340HCS plain bearings	68/800	800x980x82	800	980