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

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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.

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Bore (d) (mm)

O.D. (D) (in)

O.D. (D) (mm)

Bearing Width (in)

Bearing Width (mm)

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Total Width (mm)

Dynamic Radial Load Rating - 1M Revs (C1) (lbf)

Dynamic Radial Load Rating - 1M Revs (C1) (N)

Limiting Speed - Grease (rpm)

Limiting Speed - Oil (rpm)

Part Number	Rows per Set	Bore (d)	O.D. (D)	Bearing Width	Total Width	Contact Angle	Static Radial Load Rating (C0)	Dynamic Radial Load Rating - 1M Revs (C1)	Ball Type	CAD

MM55BS120 TUL	N/A Triplex	N/A 55.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 2.6574 in67.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM55BS120 QUL	N/A Quadruplex	N/A 55.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 3.5432 in90 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 SUH	N/A Single	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 0.8858 in22.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 DUH	N/A Duplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 1.7716 in45 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 TUH	N/A Triplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 2.6574 in67.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 QUH	N/A Quadruplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 3.5432 in90 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 SUM	N/A Single	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 0.8858 in22.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 DUM	N/A Duplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 1.7716 in45 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 TUM	N/A Triplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 2.6574 in67.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 QUM	N/A Quadruplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 3.5432 in90 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 SUL	N/A Single	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 0.8858 in22.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 DUL	N/A Duplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 1.7716 in45 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 TUL	N/A Triplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 2.6574 in67.5 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM60BS120 QUL	N/A Quadruplex	N/A 60.000 mm	N/A 4.7244 in120.000 mm	N/A 0.8858 in22.5 mm	N/A 3.5432 in90 mm	N/A 60 º	N/A 30000 lbf133400 N	N/A 17000 lbf75600 N	N/A STEEL	N/A
MM75BS110 SUH	N/A Single	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 0.5906 in15 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 DUH	N/A Duplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.1812 in30 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 TUH	N/A Triplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.7718 in45 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 QUH	N/A Quadruplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 2.3624 in60 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 SUM	N/A Single	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 0.5906 in15 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 DUM	N/A Duplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.1812 in30 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 TUM	N/A Triplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.7718 in45 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 QUM	N/A Quadruplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 2.3624 in60 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 SUL	N/A Single	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 0.5906 in15 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 DUL	N/A Duplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.1812 in30 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A
MM75BS110 TUL	N/A Triplex	N/A 75.000 mm	N/A 4.3307 in110.000 mm	N/A 0.5906 in15 mm	N/A 1.7718 in45 mm	N/A 60 º	N/A 17300 lbf77000 N	N/A 10000 lbf44500 N	N/A STEEL	N/A

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No Preference
0.3937
0.4331
0.5906
0.7874
0.8662
0.8858
0.9055
1.1811
1.1812
1.2993
1.5748
1.7324
1.7716
1.7718
1.811
2.3622
2.3624
2.6574
2.7165
3.1496
3.5432
3.622

No Preference
10
11
15
20
22
22.5
23
30
33
40
44
45
46
60
67.5
69
80
90
92