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Timken® angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance.
Unit of Measure

Specifications

Rows per Set

 N/A Duplex

Design Units

 N/A Metric

d - Bore

 N/A 20 mm

Ball Type

 N/A Ceramic

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Manufacturing Part Number

 N/A 2MMC9304WI DUM

World Part Number

 N/A C71904C-T-P4S-DUM

Dimensions

D - Outer Diameter

 N/A 37 mm1.4567 in

Bearing Width

 N/A 9 mm0.3543 in

Total Width

 N/A 18 mm0.7086 in

Contact Angle

 N/A 15 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 4050 N910 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 8080 N1820 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 7340 N1660 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 50520 rpm

Limiting Speed (Oil)

 N/A 101040 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 0.3 mm0.012 in
r - Outer Ring "To Clear" Radius3 N/A 0.3 mm0.012 in

da - Inner Ring Backing Diameter

 N/A 23.9 mm0.940 in

Da - Outer Ring Backing Diameter

 N/A 33.7 mm1.330 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.
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