The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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 44.5 mm

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Manufacturing Part Number

 N/A MM9311WI 3HQUM

Dimensions

D - Outer Diameter

 N/A 3 in76.2 mm

Bearing Width

 N/A 0.625 in15.88 mm

Total Width

 N/A 2.5000 in63.52 mm

Contact Angle

 N/A 60 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 11400 lbf50700 N
Ce - Dynamic Radial Rating (per row)1 N/A 8650 lbf38500 N

C1 ISO - Dynamic Radial Rating (per row)

 N/A 7800 lbf34700 N

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 0.031 in0.8 mm
r - Outer Ring "To Clear" Radius3 N/A 0.031 in0.800 mm

da - Inner Ring Backing Diameter

 N/A 2.3402 in59.441 mm

Da - Outer Ring Backing Diameter

 N/A 2.3846 in60.569 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.