The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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.
Fafnir® Single Row Ball Bearings
Unit of Measure
1 2 3 

Part Number

Rows per Set

Bore (d)

O.D. (D)

Bearing Width

Total Width

Contact Angle

Static Radial Load Rating (C0)

Dynamic Radial Load Rating - 1M Revs (C1)

Ball Type

CAD

MM9310WI 2H DUL N/A Duplex N/A 38.1 mm N/A 2.8346 in72.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 10200 lbf45400 N N/A 8150 lbf36300 N N/A STEEL N/A
MM9310WI 2H QUL N/A Quadruplex N/A 38.1 mm N/A 2.8346 in72.000 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 10200 lbf45400 N N/A 8150 lbf36300 N N/A STEEL N/A
MM9311WI 3H SUH N/A Single N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H DUH N/A Duplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H QUH N/A Quadruplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H SUM N/A Single N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H DUM N/A Duplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H QUM N/A Quadruplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H SUL N/A Single N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H DUL N/A Duplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9311WI 3H QUL N/A Quadruplex N/A 44.5 mm N/A 3 in76.2 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 11400 lbf50700 N N/A 8650 lbf38500 N N/A STEEL N/A
MM9313WI 5H SUH N/A Single N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H DUH N/A Duplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H QUH N/A Quadruplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H SUM N/A Single N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H DUM N/A Duplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H QUM N/A Quadruplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H SUL N/A Single N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H DUL N/A Duplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9313WI 5H QUL N/A Quadruplex N/A 57.2 mm N/A 3.5433 in90.000 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 13700 lbf60900 N N/A 9300 lbf41400 N N/A STEEL N/A
MM9316WI 3H SUH N/A Single N/A 76.2 mm N/A 4.3307 in110.000 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 17300 lbf77000 N N/A 10000 lbf44500 N N/A STEEL N/A
MM9316WI 3H DUH N/A Duplex N/A 76.2 mm N/A 4.3307 in110.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 17300 lbf77000 N N/A 10000 lbf44500 N N/A STEEL N/A
MM9316WI 3H QUH N/A Quadruplex N/A 76.2 mm N/A 4.3307 in110.000 mm N/A 0.625 in15.88 mm N/A 2.5 in63.52 mm N/A 60 º N/A 17300 lbf77000 N N/A 10000 lbf44500 N N/A STEEL N/A
MM9316WI 3H SUM N/A Single N/A 76.2 mm N/A 4.3307 in110.000 mm N/A 0.625 in15.88 mm N/A 0.625 in15.88 mm N/A 60 º N/A 17300 lbf77000 N N/A 10000 lbf44500 N N/A STEEL N/A
MM9316WI 3H DUM N/A Duplex N/A 76.2 mm N/A 4.3307 in110.000 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 60 º N/A 17300 lbf77000 N N/A 10000 lbf44500 N N/A STEEL N/A
Unit of Measure
1 2 3