Description:
This listing is for the Inner Cam Bearing used on Single Cam Big Twins.
This is the only cam bearing you should use for your Single Cam. These are made in the United States.
Koyo bought the Torrington needle bearing division from Timken in 2011, which acquired Torrington in 2003.
The bearing offered is the B-138, which is suitable for Evolution Single Cam models from 1958 to 1999.Â
B-138
Drawn Cup Needle Roller Bearing – Open Ends with Full Complement, 13/16 in Bore, 1-1/16 in OD, 1/2 in Width
OVERVIEW
Needle roller and cage assemblies consist of a complement of needle rollers held in place by a cage
With no inner or outer ring, the low cross section provides maximum load-carrying capability within the smallest envelope
The mating shaft and housing are normally used as inner and outer raceways
Unsealed closure
B Series: Standard Series full complement of mechanically-retained needle rollers
BH Series: Heavy Series full complement of mechanically-retained needle rollers
-OH designates with oil hole for lubrication
SPECIFICATIONS
Cage Material No Cage
Static Load Capacity 5350 lbf
Closure Type Open
Operating Temperature Range Maximum of +250 °F
Outside Diameter 1-1/16 in
Lubrication Hole Type No Hole
Drawn Cup Type Open Ends with Full Complement
Weight 0.04 lbs
Overall Width 1/2 in
Series B
Bore Diameter 13/16 in
Dynamic Load Capacity 3320 lbf
Maximum RPM 5200 RPM
Precision Rating Not Rated
Standards Met ANSI/ABMA 18.2, ASTM F2162
Package Includes :
One (1) BEARING B138 PB L125 KOYO
