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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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

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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM17BS47 SUM

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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM17BS47 SUL

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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM20BS47 SUH

N/A Single

N/A 20 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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM20BS47 SUM

N/A Single

N/A 20 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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM20BS47 SUL

N/A Single

N/A 20 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

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 STEEL

N/A

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 STEEL

N/A

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 STEEL

N/A

MM25BS52 SUH

N/A Single

N/A 25 mm

N/A 2.0472 in52 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

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