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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.
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Unit of Measure

Specifications

Manufacturing Part Number

 N/A MM55BS90DUM

Rows per Set

 N/A Duplex

Design Units

 N/A Metric

d - Bore

 N/A 55 mm

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Dimensions

D - Outer Diameter

 N/A 90 mm3.5433 in

Bearing Width

 N/A 15 mm0.5906 in

Total Width

 N/A 30 mm1.1812 in

Contact Angle

 N/A 60 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 60900 N13700 lbf

Ce - Dynamic Radial Rating (per row)

 N/A 41400 N9310 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 37300 N8390 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 2200 rpm

Limiting Speed (Oil)

 N/A 4400 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius1 N/A 0.8 mm0.031 in
r - Outer Ring "To Clear" Radius2 N/A 0.800 mm0.031 in

da - Inner Ring Backing Diameter

 N/A 72.695 mm2.862 in

Da - Outer Ring Backing Diameter

 N/A 73.823 mm2.9064 in
  • 1 Maximum housing fillet radius that bearing corners will clear.
  • 2 Maximum shaft fillet radius that bearing corners will clear.