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Smarter Bearing Selection Is Here

The Timken ® Syber ® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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Analyze Bearing Performance in an Application with Timken ® Syber ® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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Simplified Gear Force Analysis

Alex Waye, Timken Application Engineer, shows you how to instantly compute tangential, radial, and axial forces for better design decisions.

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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 Triplex

Design Units

 N/A Metric

d - Bore

 N/A 55 mm

Ball Type

 N/A Ceramic

Cage Type

 N/A CR - Phenolic Outer Land Riding Cage

Precision Rating

 N/A ISO P4S (ABEC 7/9)

Manufacturing Part Number

 N/A 3MMC9311WI TUM

World Part Number

 N/A C71911E-T-P4S-TUM

Dimensions

D - Outer Diameter

 N/A 80 mm3.1496 in

Bearing Width

 N/A 13 mm0.5118 in

Total Width

 N/A 39 mm1.5354 in

Contact Angle

 N/A 25 º

Basic Load Ratings

C0 - Static Radial Rating (per row)

 N/A 15500 N3490 lbf
Ce - Dynamic Radial Rating (per row)1 N/A 20600 N4620 lbf

C1 ISO - Dynamic Radial Rating (per row)

 N/A 18700 N4200 lbf

Factors

Limiting Speed (Grease) (per row)

 N/A 17900 rpm

Limiting Speed (Oil)

 N/A 35800 rpm

Abutment and Fillet Dimensions

R - Inner Ring "To Clear" Radius2 N/A 1 mm0.039 in
r - Outer Ring "To Clear" Radius3 N/A 1 mm0.039 in

da - Inner Ring Backing Diameter

 N/A 60.4 mm2.380 in

Da - Outer Ring Backing Diameter

 N/A 75.2 mm2.960 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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