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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 Quadruplex

Design Units

 N/A Metric

d - Bore

 N/A 38.1 mm

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Manufacturing Part Number

 N/A MM9310WI 2HQUH

Dimensions

D - Outer Diameter

 N/A 72 mm2.8346 in

Bearing Width

 N/A 15.88 mm0.625 in

Total Width

 N/A 63.52 mm2.5000 in

Contact Angle

 N/A 60 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 45400 N10200 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 36300 N8150 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 32700 N7350 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 2500 rpm

Limiting Speed (Oil) (per row)

 N/A 5000 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 54.483 mm2.145 in

Da - Outer Ring Backing Diameter

 N/A 55.611 mm2.1894 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.