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
SKF SA17C plain bearings	NJ418	90x225x54	90	225
Toyana GE 100 ECR-2RS plain bearings	68/710	710x870x74	710	870
25 mm x 42 mm x 20 mm ISO GE25UK plain bearings	6808	40x52x7	40	52
190 mm x 290 mm x 64 mm LS GAC190S plain bearings	6308-2NKE	40x90x23	40	90
4 mm x 6 mm x 6 mm INA EGB0406-E40-B-6 plain bearings	633 ZZ	3x13x5	3	13
30 mm x 50 mm x 27 mm IKO SB 30A plain bearings	68/630	630x780x69	630	780
34.925 mm x 55.563 mm x 52.375 mm SKF GEZM 106 ESX-2LS plain bearings	6820ZZ	100x125x13	100	125
90 mm x 130 mm x 60 mm ISO GE90DO plain bearings	234421	105x160x66	105	160
44,45 mm x 71,438 mm x 38,89 mm SKF GEZ112ES-2RS plain bearings	6328-ZZ	140x300x62	140	300
25 mm x 28 mm x 30 mm INA EGB2530-E40-B plain bearings	DAC4074CWCS73	40x74x36	40	74
220 mm x 225 mm x 100 mm SKF PCM 220225100 M plain bearings	6212	60x110x22	60	110
320 mm x 440 mm x 160 mm FBJ GEC320XS plain bearings	6705ZZ	25x32x4	25	32