Aurora Bearing Company
Aurora Bearing Company
901 Aucutt Rd.
Montgomery, IL 60538
Phone: 630.859.2030 • Fax: 630.859.0971
Email: customersupport@aurorabearing.com • Website: www.aurorabearing.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
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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

MM12BS32 SUH N/A Single N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.3937 in10 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 DUH N/A Duplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.7874 in20 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 TUH N/A Triplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.1811 in30 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 QUH N/A Quadruplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.5748 in40 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 SUM N/A Single N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.3937 in10 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 DUM N/A Duplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.7874 in20 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 TUM N/A Triplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.1811 in30 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 QUM N/A Quadruplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.5748 in40 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 SUL N/A Single N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.3937 in10 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 DUL N/A Duplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 0.7874 in20 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 TUL N/A Triplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.1811 in30 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM12BS32 QUL N/A Quadruplex N/A 12 mm N/A 1.2598 in32 mm N/A 0.3937 in10 mm N/A 1.5748 in40 mm N/A 60 º N/A 2600 lbf11400 N N/A 2140 lbf9500 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 SUH N/A Single N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.4331 in11 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 DUH N/A Duplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.8662 in22 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 TUH N/A Triplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.2993 in33 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 QUH N/A Quadruplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.7324 in44 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 SUM N/A Single N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.4331 in11 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 DUM N/A Duplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.8662 in22 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 TUM N/A Triplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.2993 in33 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 QUM N/A Quadruplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.7324 in44 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 SUL N/A Single N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.4331 in11 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 DUL N/A Duplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 0.8662 in22 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 TUL N/A Triplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.2993 in33 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM15BS35 QUL N/A Quadruplex N/A 15 mm N/A 1.378 in35 mm N/A 0.4331 in11 mm N/A 1.7324 in44 mm N/A 60 º N/A 3100 lbf13700 N N/A 2340 lbf10400 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 SUH N/A Single N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 DUH N/A Duplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 TUH N/A Triplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 QUH N/A Quadruplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 SUM N/A Single N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 DUM N/A Duplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 TUM N/A Triplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 QUM N/A Quadruplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 SUL N/A Single N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 DUL N/A Duplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 TUL N/A Triplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM17BS47 QUL N/A Quadruplex N/A 17 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 SUH N/A Single N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 DUH N/A Duplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 TUH N/A Triplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 QUH N/A Quadruplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 SUM N/A Single N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 DUM N/A Duplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 TUM N/A Triplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 QUM N/A Quadruplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 SUL N/A Single N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 DUL N/A Duplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 TUL N/A Triplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM20BS47 QUL N/A Quadruplex N/A 20 mm N/A 1.8504 in47 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 5600 lbf24900 N N/A 5600 lbf24900 N N/A STEEL N/A CAD Icon (for items table)
MM25BS52 SUH N/A Single N/A 25 mm N/A 2.0472 in52 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 6100 lbf27100 N N/A 5850 lbf26000 N N/A STEEL N/A CAD Icon (for items table)
MM25BS52 DUH N/A Duplex N/A 25 mm N/A 2.0472 in52 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 6100 lbf27100 N N/A 5850 lbf26000 N N/A STEEL N/A CAD Icon (for items table)
Unit of Measure
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