Fafnir® Single Row Ball Screw Support Bearings (MM-BS) On The Timken Company

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.

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
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
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
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
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
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
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
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
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
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
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
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
MM15BS35 SUH	N/A Single	N/A 15 mm	N/A 1.3780 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
MM15BS35 DUH	N/A Duplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 TUH	N/A Triplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 QUH	N/A Quadruplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 SUM	N/A Single	N/A 15 mm	N/A 1.3780 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
MM15BS35 DUM	N/A Duplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 TUM	N/A Triplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 QUM	N/A Quadruplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 SUL	N/A Single	N/A 15 mm	N/A 1.3780 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
MM15BS35 DUL	N/A Duplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 TUL	N/A Triplex	N/A 15 mm	N/A 1.3780 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
MM15BS35 QUL	N/A Quadruplex	N/A 15 mm	N/A 1.3780 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
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

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 60 º

N/A 2600 lbf11400 N

N/A 2140 lbf9500 N

N/A STEEL

N/A

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

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

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

MM12BS32 SUM

N/A Single

N/A 12 mm

N/A 1.2598 in32 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

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

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

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

MM12BS32 SUL

N/A Single

N/A 12 mm

N/A 1.2598 in32 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

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

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

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

MM15BS35 SUH

N/A Single

N/A 15 mm

N/A 1.3780 in35 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

MM15BS35 DUH

N/A Duplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 TUH

N/A Triplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 QUH

N/A Quadruplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 SUM

N/A Single

N/A 15 mm

N/A 1.3780 in35 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

MM15BS35 DUM

N/A Duplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 TUM

N/A Triplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 QUM

N/A Quadruplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 SUL

N/A Single

N/A 15 mm

N/A 1.3780 in35 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

MM15BS35 DUL

N/A Duplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 TUL

N/A Triplex

N/A 15 mm

N/A 1.3780 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

MM15BS35 QUL

N/A Quadruplex

N/A 15 mm

N/A 1.3780 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

MM17BS47 SUH

N/A Single

N/A 17 mm

N/A 1.8504 in47 mm

N/A 0.5906 in15 mm

N/A 60 º

N/A 5600 lbf24900 N

N/A STEEL

N/A