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

MM9306WI 2H SUH N/A Single N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H DUH N/A Duplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H QUH N/A Quadruplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H SUM N/A Single N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H DUM N/A Duplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H QUM N/A Quadruplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H SUL N/A Single N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H DUL N/A Duplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9306WI 2H QUL N/A Quadruplex N/A 20 mm N/A 47 mm1.8504 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 24900 N5600 lbf N/A 24900 N5600 lbf N/A STEEL N/A CAD
MM9308WI 2H SUH N/A Single N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H DUH N/A Duplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H QUH N/A Quadruplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H SUM N/A Single N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H DUM N/A Duplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H QUM N/A Quadruplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H SUL N/A Single N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H DUL N/A Duplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 31.76 mm1.25 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9308WI 2H QUL N/A Quadruplex N/A 23.8 mm N/A 62 mm2.4409 in N/A 15.88 mm0.625 in N/A 63.52 mm2.5000 in N/A 60 º N/A 35600 N8000 lbf N/A 29800 N6700 lbf N/A STEEL N/A CAD
MM9310WI 2H SUH N/A Single N/A 38.1 mm N/A 72 mm2.8346 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 45400 N10200 lbf N/A 36300 N8150 lbf N/A STEEL N/A CAD
MM9310WI 2H DUH 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 QUH 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
MM9310WI 2H SUM N/A Single N/A 38.1 mm N/A 72 mm2.8346 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 45400 N10200 lbf N/A 36300 N8150 lbf N/A STEEL N/A CAD
MM9310WI 2H DUM 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 QUM 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
MM9310WI 2H SUL N/A Single N/A 38.1 mm N/A 72 mm2.8346 in N/A 15.88 mm0.625 in N/A 15.88 mm0.625 in N/A 60 º N/A 45400 N10200 lbf N/A 36300 N8150 lbf N/A STEEL N/A CAD
Unit of Measure
1 2 3