Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H) 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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Rows per Set

d - Bore (mm)

D - Outer Diameter (in)

D - Outer Diameter (mm)

Bearing Width (in)

Bearing Width (mm)

Total Width (in)

Total Width (mm)

Ce - Dynamic Radial Rating (per row) (lbf)

Ce - Dynamic Radial Rating (per row) (N)

Limiting Speed (Grease) (per row) (rpm)

Limiting Speed (Oil) (per row) (rpm)

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

MM9306WI 2H SUH	N/A Single	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H DUH	N/A Duplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H QUH	N/A Quadruplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H SUM	N/A Single	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H DUM	N/A Duplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H QUM	N/A Quadruplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H SUL	N/A Single	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H DUL	N/A Duplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9306WI 2H QUL	N/A Quadruplex	N/A 20 mm	N/A 1.8504 in47 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 5600 lbf24900 N	N/A 5600 lbf24900 N	N/A STEEL	N/A
MM9308WI 2H SUH	N/A Single	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H DUH	N/A Duplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H QUH	N/A Quadruplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H SUM	N/A Single	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H DUM	N/A Duplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H QUM	N/A Quadruplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H SUL	N/A Single	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H DUL	N/A Duplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9308WI 2H QUL	N/A Quadruplex	N/A 23.8 mm	N/A 2.4409 in62 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 8000 lbf35600 N	N/A 6700 lbf29800 N	N/A STEEL	N/A
MM9310WI 2H SUH	N/A Single	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H DUH	N/A Duplex	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H QUH	N/A Quadruplex	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H SUM	N/A Single	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H DUM	N/A Duplex	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 1.25 in31.76 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H QUM	N/A Quadruplex	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 2.5000 in63.52 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A
MM9310WI 2H SUL	N/A Single	N/A 38.10 mm	N/A 2.8346 in72 mm	N/A 0.625 in15.88 mm	N/A 0.625 in15.88 mm	N/A 60 º	N/A 10200 lbf45400 N	N/A 8150 lbf36300 N	N/A STEEL	N/A

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