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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

Specifications

Design Units

 N/A Metric

d - Bore

 N/A 60 mm

Ball Type

 N/A STEEL

Manufacturing Part Number

 N/A 312KDDFS50000

Dimensions

D - Outer Diameter

 N/A 130 mm5.118 in

Bearing Width

 N/A 31 mm1.2205 in

Basic Load Ratings

Ce - Dynamic Radial Rating1 N/A 90700 N20400 lbf

C0 - Static Radial Rating

 N/A 51800 N11700 lbf

Factors

Limiting Speed (Grease)

 N/A 3158 rpm

Limiting Speed (Oil)

 N/A 3684 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 2.11 mm0.083 in
r - Outer Ring "To Clear" Radius3 N/A 2.11 mm0.083 in

da - Inner Ring Backing Diameter

 N/A 72.1 mm2.8386 in

Da - Outer Ring Backing Diameter

 N/A 118.10 mm4.6496 in
  • 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.