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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.
Fafnir® Single Row Ball Bearings
Unit of Measure
Items Fafnir® Single Row Ball Bearings
MM9306WI 2H SUH
Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
Fafnir® Single Row Ball Bearings
MM9306WI 2H DUH
Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
Fafnir® Single Row Ball Bearings
MM9306WI 2H QUH
Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
Fafnir® Single Row Ball Bearings
MM9306WI 2H SUM
Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
Fafnir® Single Row Ball Bearings
MM9306WI 2H DUM
Fafnir® Single Row Imperial Ball Screw Support Bearings (MM9-H)
Rows per Set N/A Single N/A Duplex N/A Quadruplex N/A Single N/A Duplex
Design Units N/A Metric
d - Bore N/A 20 mm
D - Outer Diameter N/A 1.8504 in47 mm
Bearing Width N/A 0.625 in15.88 mm
Total Width N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm N/A 2.5000 in63.52 mm N/A 0.625 in15.88 mm N/A 1.25 in31.76 mm
Contact Angle N/A 60 º
C0 - Static Radial Rating (per row) N/A 5600 lbf24900 N
Ce - Dynamic Radial Rating (per row)1 N/A 5600 lbf24900 N
Limiting Speed (Grease) (per row) N/A 4400 rpm
Limiting Speed (Oil) (per row) N/A 8800 rpm
Ball Type N/A STEEL
Cage Type N/A CR - Phenolic Outer Land Riding Cage
Bearing Weight N/A 0.28 lb0.13 Kg N/A 0.56 lb0.26 Kg N/A 1.12 lb0.52 Kg N/A 0.28 lb0.13 Kg N/A 0.56 lb0.26 Kg
R - Inner Ring "To Clear" Radius2 N/A 0.031 in0.8 mm
r - Outer Ring "To Clear" Radius3 N/A 0.031 in0.800 mm
da - Inner Ring Backing Diameter N/A 1.3186 in33.492 mm
Da - Outer Ring Backing Diameter N/A 1.3579 in34.491 mm
  • 1 Based on 106 revolutions of calculated fatigue life.
  • 2 Maximum housing fillet radius that bearing corners will clear.
  • 3 Maximum shaft fillet radius that bearing corners will clear.