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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 44.5 mm

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Manufacturing Part Number

 N/A MM9311WI 3HDUM

Dimensions

D - Outer Diameter

 N/A 76.2 mm3 in

Bearing Width

 N/A 15.88 mm0.625 in

Total Width

 N/A 31.76 mm1.25 in

Contact Angle

 N/A 60 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 50700 N11400 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 38500 N8650 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 34700 N7800 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 2100 rpm

Limiting Speed (Oil) (per row)

 N/A 4200 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 0.8 mm0.031 in
r - Outer Ring "To Clear" Radius3 N/A 0.800 mm0.031 in

da - Inner Ring Backing Diameter

 N/A 59.441 mm2.3402 in

Da - Outer Ring Backing Diameter

 N/A 60.569 mm2.3846 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.