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Radial ball bearings consist of an inner and outer ring with a cage containing a complement of precision balls. The standard Conrad-type bearing has a deep-groove construction capable of handling radial and axial loads from either direction in versatile designs that permit relatively high-speed operation.

In addition to standard single-row deep groove bearings, Timken offers special designs, including a maximum capacity series and an extra large (XLS) radial series bearing.

Size range: 3 mm - 600 mm (0.12 in. - 23.62 in.) bore
Unit of Measure

Key Dimensions

Design Units

 N/A Metric

Bore (d)

 N/A 140 mm

O.D. (D)

 N/A 8.6614 in220.000 mm
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 36600 lbf162900 N

Ball Type

 N/A STEEL

Manufacturing Part Number

 N/A 128WBR

Other Dimensions

Bearing Width

 N/A 1.4173 in36 mm
Max Shaft Fillet Radius2 N/A 0.079 in2.01 mm

Shaft Backing Shoulder Diameter

 N/A 6.4039 in162.66 mm

Housing Backing Shoulder Diameter

 N/A 7.8941 in200.51 mm

Ratings

Static Radial Load Rating (C0)

 N/A 35100 lbf156000 N

Limiting Speed - Grease

 N/A 1390 rpm

Limiting Speed - Oil

 N/A 1667 rpm

Abutment and Fillet Dimensions

r - Outer Ring "To Clear" Radius3 N/A 0.079 in2.01 mm
  • 1 Based on 106 revolutions of calculated fatigue life.
  • 2 Maximum housing fillet radius that bearing corners will clear.
  • 3 Maximum shaft fillet radius that bearing corners will clear.