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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 100 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 3MM220WI SUM

World Part Number

N/A 7220E-T-P4S-SUM

Dimensions

D - Outer Diameter

N/A 180 mm7.0866 in

Bearing Width

N/A 34 mm1.3386 in

Total Width

N/A 34 mm1.3386 in

Contact Angle

N/A 25 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

N/A 121000 N27200 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 157500 N35400 lbf

C1 ISO - Dynamic Radial Rating (per row)

N/A 143000 N32200 lbf

Factors

Limiting Speed (Grease) (per row)

N/A 7200 rpm

Limiting Speed (Oil)

N/A 14400 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 2.1 mm0.079 in
r - Outer Ring "To Clear" Radius3 N/A 2.1 mm0.079 in

da - Inner Ring Backing Diameter

N/A 114.4 mm4.510 in

Da - Outer Ring Backing Diameter

N/A 166 mm6.540 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.
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