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

d - Bore

D - Outer Diameter

Bearing Width

Total Width

Contact Angle

C0 - Static Radial Rating (per row)

Ce - Dynamic Radial Rating (per row)

Ball Type

CAD

MM9310WI 2H DUL N/A Duplex N/A 38.1 mm N/A 72 mm2.8346 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 45400 N10200 lbf N/A 36300 N8150 lbf N/A STEEL N/A CAD
MM9310WI 2H QUL N/A Quadruplex N/A 38.1 mm N/A 72 mm2.8346 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 45400 N10200 lbf N/A 36300 N8150 lbf N/A STEEL N/A CAD
MM9311WI 3H SUH N/A Single N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H DUH N/A Duplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H QUH N/A Quadruplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H SUM N/A Single N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H DUM N/A Duplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H QUM N/A Quadruplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H SUL N/A Single N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H DUL N/A Duplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9311WI 3H QUL N/A Quadruplex N/A 44.5 mm N/A 76.2 mm3 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 50700 N11400 lbf N/A 38500 N8650 lbf N/A STEEL N/A CAD
MM9313WI 5H SUH N/A Single N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H DUH N/A Duplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H QUH N/A Quadruplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H SUM N/A Single N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H DUM N/A Duplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H QUM N/A Quadruplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H SUL N/A Single N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H DUL N/A Duplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9313WI 5H QUL N/A Quadruplex N/A 57.2 mm N/A 90 mm3.5433 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 60900 N13700 lbf N/A 41400 N9300 lbf N/A STEEL N/A CAD
MM9316WI 3H SUH N/A Single N/A 76.2 mm N/A 110 mm4.3307 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 77000 N17300 lbf N/A 44500 N10000 lbf N/A STEEL N/A CAD
MM9316WI 3H DUH N/A Duplex N/A 76.2 mm N/A 110 mm4.3307 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 77000 N17300 lbf N/A 44500 N10000 lbf N/A STEEL N/A CAD
MM9316WI 3H QUH N/A Quadruplex N/A 76.2 mm N/A 110 mm4.3307 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 77000 N17300 lbf N/A 44500 N10000 lbf N/A STEEL N/A CAD
MM9316WI 3H SUM N/A Single N/A 76.2 mm N/A 110 mm4.3307 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 77000 N17300 lbf N/A 44500 N10000 lbf N/A STEEL N/A CAD
MM9316WI 3H DUM N/A Duplex N/A 76.2 mm N/A 110 mm4.3307 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 77000 N17300 lbf N/A 44500 N10000 lbf N/A STEEL N/A CAD
Unit of Measure
1 2 3