Consolidated Bearings

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MR-31-N

NEEDLE BEARINGS - CAGE TYPE - WITHOUT INNER RACE (INCH)
Dimensions (inch)F1.9375
D2.5
B1
Approx. Wgt. lbs0.575
Appropriate Inner Race-
InterchangeIKO-
INA-
McGill-
RBCSJ7344
Torrington-
MR-31-N diagram one
  1. For applications where the bearing is run directly on the shaft, no inner race is required. The shaft hardness should be 60 Rockwell C scale.
  2. Lubrication - Outer races have an external centered oil groove and one oil hole. Inner races have an internal centered oil groove and one oil hole.
  3. Material - Outer races, inner races and rollers are made from 52100 steel and hardened to Rockwell hardness 60-64 RC. These bearings are equipped with stamped steel cages.