Montage of Timken Bearing Products
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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 Single

Design Units

 N/A Metric

d - Bore

 N/A 140 mm

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Precision Rating

 N/A ISO P4S (ABEC 7/9)

Manufacturing Part Number

 N/A 3MM9128WI SUL

World Part Number

 N/A 7028E-T-P4S-SUL

Dimensions

D - Outer Diameter

 N/A 210 mm8.2677 in

Bearing Width

 N/A 33 mm1.2992 in

Total Width

 N/A 33 mm1.2992 in

Contact Angle

 N/A 25 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 137400 N30900 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 138300 N31100 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 126000 N28300 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 5300 rpm

Limiting Speed (Oil)

 N/A 10600 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 2 mm0.079 in
r - Outer Ring "To Clear" Radius3 N/A 2 mm0.079 in

da - Inner Ring Backing Diameter

 N/A 154.3 mm6.080 in

Da - Outer Ring Backing Diameter

 N/A 196.5 mm7.740 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.