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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

Key Dimensions

Rows per Set

 N/A Triplex

Design Units

 N/A Metric

Bore (d)

 N/A 90 mm

O.D. (D)

 N/A 4.921 in125 mm
Dynamic Radial Load Rating - 1M Revs (C1)1 N/A 10100 lbf45000 N

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Cage Material

 N/A MBR Cage

Precision Rating

 N/A ISO P4S (ABEC 7/9)

Manufacturing Part Number

 N/A 2MM9318WI TUM

World Part Number

 N/A 71918C-T-P4S-TUM

Preload

 N/A Medium

Other Dimensions

Bearing Width

 N/A 0.709 in18 mm

Total Width

 N/A 2.126 in54 mm

Contact Angle

 N/A 15 º
Max Shaft Fillet Radius2 N/A 0.039 in1.00 mm

Shaft Backing Shoulder Diameter

 N/A 3.820 in97.0 mm

Housing Backing Shoulder Diameter

 N/A 4.660 in118.5 mm

Ratings

Static Radial Load Rating (C0)

 N/A 9900 lbf44000 N

Limiting Speed - Grease

 N/A 10300 rpm

Limiting Speed - Oil

 N/A 20600 rpm

C1 ISO - Dynamic Radial Rating (per row)

 N/A 9180 lbf40900 N

Abutment and Fillet Dimensions

r - Outer Ring "To Clear" Radius3 N/A 0.039 in1 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.