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Kw-Lagerung

Pre Unit

Small Bearinngs früh :

70-1592 MJ1JC ----- 25.4x63.5x19.05 mm

Big Bearings spät :
70-1591 MJ 1.1/8 JC (Rillenkugellager) --- 28.45x71.37x20.57 mm

Unit Primärseitig :

70-2879 MJRA 1.1/8 (Rolle/Schiebesitz),Steuerseite Mj 1.1/8JC


750er Steuerseitig :

70-3835 metrisch 6306 ( 30x72x19)

später

60-7362 NUP 306 (Rolle 3-teilig 30x72x19)

Main bearings used by year and model
engine Timing side Drive side
500 to 1954 70-1592 70-1591
650 to 1954 70-1592 70-1591
500 1955-57 70-1591 70-1591
650 1955-62 70-1591 70-1591
650 1963-65 70-1591 70-1591
650 1966-71 70-1591 70-2879
650 1972-73 70-3835 (metric) 70-2879
750 1973-76 70-3835 (metric) 70-2879
750 1977-80 70-3835 (metric) 70-2879 C2
Triumph Main bearing sizes
70-1591 ball bearing (RHP MJ1 1/8JC3)
70-1591 ball bearing (Hepolite MJ1 1/8C3)
70-1592 ball bearing (RHP MJ1JC3)
70-2897 roller bearing (RHP MRJA1 1/8JCN)
70-2897 roller bearing (Hepolite MRJA1 1/8C3)
(70-2897 also interchanges BSA 68-0625)
70-3835 ball bearing (metric) 6306C3
(70-3835 also same as 60-4167)
70-2879 C2 roller bearing (RHP MRJA1 1/8JC2)