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  • The chart below shows dimensions for locknuts and lockwashers used in the mounting of straight bore bearings on shafts.
  • Other dimensions and tolerances related to shaft configurations are also shown.
  • Dimensions are presented according to bearing bore size and are applicable to bearings in the various series (e.g., 222 and 223 etc.).
Unit of Measure


Bearing Bore

N/A 40 mm


N/A N 08


N/A W 08


Major Diameter

N/A 39.70 mm1.563 in

Threads No. per Inch

N/A 18


Relief Diameter A

N/A 37.69 mm1.484 in

Diameter S-3

N/A 36.51 mm1 7/16 in
W1 N/A 2.77 mm0.109 in
L2 N/A 11.13 mm0.438 in
H3 N/A 2.4 mm0.094 in
S4 N/A 7.92 mm0.312 in
M5 N/A 3.18 mm0.125 in



N/A 57.28 mm2.255 in


N/A 11.40 mm



N/A 1.22 mm0.048 in


N/A 40.21 mm1.583 in


N/A 63.40 mm2.496 in


N/A 7.37 mm0.290 in
  • 1 Tolerance -0 to + 0.4 mm (-0 to +1/64 in)
  • 2 Tolerance -0 to + 0.4 mm (-0 to +1/64 in)
  • 3 Tolerance -0 to + 0.4 mm (-0 to +1/64 in)
  • 4 Tolerance -0 to + 0.4 mm (-0 to +1/64 in)
  • 5 Tolerance -0 to + 0.4 mm (-0 to +1/64 in)
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