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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

Key Dimensions

Manufacturing Part Number

 N/A MM12BS32DUM

Rows per Set

 N/A Duplex

Design Units

 N/A Metric

Bore (d)

 N/A 12 mm

O.D. (D)

 N/A 1.2598 in32 mm

Dynamic Radial Load Rating - 1M Revs (C1)

 N/A 2140 lbf9500 N

Ball Type

 N/A STEEL

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Other Dimensions

Bearing Width

 N/A 0.3937 in10 mm

Total Width

 N/A 0.7874 in20 mm

Contact Angle

 N/A 60 º
Max Shaft Fillet Radius1 N/A 0.031 in0.8 mm

Shaft Backing Shoulder Diameter

 N/A 0.855 in21.717 mm

Housing Backing Shoulder Diameter

 N/A 0.879 in22.327 mm

Ratings

Static Radial Load Rating (C0)

 N/A 2600 lbf11400 N

Limiting Speed - Grease

 N/A 7300 rpm

Limiting Speed - Oil

 N/A 14600 rpm

C1 ISO - Dynamic Radial Rating (per row)

 N/A 1930 lbf8600 N

Abutment and Fillet Dimensions

r - Outer Ring "To Clear" Radius2 N/A 0.031 in0.8 mm
  • 1 Maximum housing fillet radius that bearing corners will clear.
  • 2 Maximum shaft fillet radius that bearing corners will clear.