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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d - Bore (mm)

d - Bore (in)

D - Outer Diameter (mm)

D - Outer Diameter (in)

Bearing Width (mm)

Bearing Width (in)

Ce - Dynamic Radial Rating (N)

Ce - Dynamic Radial Rating (lbf)

Limiting Speed (Grease) (rpm)

Limiting Speed (Oil) (rpm)

Timken Part Number	d - Bore	D - Outer Diameter	Bearing Width	Contact Angle	C0 - Static Radial Rating	Ce - Dynamic Radial Rating	Ball Type	Cage Type	CAD

MM12BS32	N/A 12.000 mm0.4724 in	N/A 32.000 mm12.5980 in	N/A 10.000 mm0.3937 in	N/A 60 º	N/A 11400 N2600 lbf	N/A 9500 N2140 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM15BS35	N/A 15.000 mm0.5906 in	N/A 35.000 mm13.7800 in	N/A 11.000 mm0.4331 in	N/A 60 º	N/A 13700 N3100 lbf	N/A 10400 N2340 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM17BS47	N/A 17.000 mm0.6693 in	N/A 47.000 mm18.5040 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 24900 N5600 lbf	N/A 24900 N5600 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM20BS47	N/A 20.000 mm0.7874 in	N/A 47.000 mm18.5040 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 24900 N5600 lbf	N/A 24900 N5600 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM25BS52	N/A 25.000 mm0.9843 in	N/A 52.000 mm20.4720 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 27100 N6100 lbf	N/A 26000 N5850 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM25BS62	N/A 25.000 mm0.9843 in	N/A 62.000 mm24.4090 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 35600 N8000 lbf	N/A 29800 N6700 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM30BS62	N/A 30.000 mm11.8110 in	N/A 62.000 mm24.4090 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 35600 N8000 lbf	N/A 29800 N6700 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM30BS72	N/A 30.000 mm11.8110 in	N/A 72.000 mm28.3460 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 45400 N10200 lbf	N/A 36300 N8160 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM35BS72	N/A 35.000 mm13.7800 in	N/A 72.000 mm28.3460 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 45400 N10200 lbf	N/A 36300 N8160 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM35BS100	N/A 35.000 mm13.7800 in	N/A 100.000 mm39.3700 in	N/A 20.000 mm0.7874 in	N/A 60 º	N/A 93400 N21000 lbf	N/A 71200 N16010 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM40BS72	N/A 40.000 mm15.7480 in	N/A 72.000 mm28.3460 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 45400 N10200 lbf	N/A 36300 N8160 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM40BS90	N/A 40.000 mm15.7480 in	N/A 90.000 mm35.4330 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 60900 N13700 lbf	N/A 41400 N9310 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM40BS90-20	N/A 40.000 mm15.7480 in	N/A 90.000 mm35.4330 in	N/A 20.000 mm0.7874 in	N/A 60 º	N/A 60900 N13700 lbf	N/A 41400 N9310 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM40BS90-23	N/A 40.000 mm15.7480 in	N/A 90.000 mm35.4330 in	N/A 23.000 mm0.9055 in	N/A 60 º	N/A 60900 N13700 lbf	N/A 41400 N9310 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM40BS100	N/A 40.000 mm15.7480 in	N/A 100.000 mm39.3700 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 93400 N21000 lbf	N/A 71200 N16010 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM45BS75	N/A 45.000 mm17.7170 in	N/A 75.000 mm29.5280 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 50700 N11400 lbf	N/A 38500 N8660 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM45BS100	N/A 45.000 mm17.7170 in	N/A 100.000 mm39.3700 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 93400 N21000 lbf	N/A 71200 N16010 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM50BS90	N/A 50.000 mm19.6850 in	N/A 90.000 mm35.4330 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 60900 N13700 lbf	N/A 41400 N9310 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM50BS100	N/A 50.000 mm19.6850 in	N/A 100.000 mm39.3700 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 93400 N21000 lbf	N/A 71200 N16010 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM55BS90	N/A 55.000 mm21.6540 in	N/A 90.000 mm35.4330 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 60900 N13700 lbf	N/A 41400 N9310 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM55BS120	N/A 55.000 mm21.6540 in	N/A 120.000 mm47.2440 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 133400 N30000 lbf	N/A 75600 N17000 lbf	N/A Steel	N/A CR - Phenolic Outer Land Riding Cage	N/A
MM60BS120	N/A 60.000 mm23.6220 in	N/A 120.000 mm47.2440 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 133400 N30000 lbf	N/A 75600 N17000 lbf	N/A Steel	N/A Nylon Ball Riding Cage	N/A
MM75BS110	N/A 75.000 mm29.5280 in	N/A 110.000 mm43.3070 in	N/A 15.000 mm0.5906 in	N/A 60 º	N/A 77000 N17300 lbf	N/A 44500 N10000 lbf	N/A Steel	N/A CR - Phenolic Outer Land Riding Cage	N/A
MM100BS150	N/A 100.000 mm39.3700 in	N/A 150.000 mm59.055 in	N/A 22.500 mm0.8858 in	N/A 60 º	N/A 200500 N45100 lbf	N/A 80900 N18200 lbf	N/A Steel	N/A CR - Phenolic Outer Land Riding Cage	N/A

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