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Smarter Bearing Selection Is Here

The Timken® Syber® Bearing System Designer Tool now features Smart Selection, enabling users to find the right bearing faster by filtering options based on target life and key dimensions.

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Analyze Bearing Performance in an Application with Timken® Syber® Bearing System Designer

A powerful software tool that combines calculators and configurators to assist you with application design, bearing selection, installation, and troubleshooting. It’s free, easy-to-use, and accessible 24/7.

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  • FLEX_sleeve with O ring
  • F Type Flanged Sleeve Cut Away
  • FFR Type Gear Coupling Diagram
  • F Type Sleeves w/ O-Ring - Imperial-2
F Type Flex Sleeves (with O-Ring)

For use with F (Flex-Flex) or FFR (Flex-Rigid) couplings.

The F Type coupling consists of two flex hubs, two sleeves and one accessory kit. Exposed bolts (E) are the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The F Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).

The FFR Type coupling consists of one flex hub, one rigid hub, one sleeve, and one accessory kit. Exposed bolts (E) are the standard design for this coupling, though shrouded bolt (S) designs are available upon request through size 5.5. The FFR Type has a max angular misalignment of 1.5 degrees (1.5 degrees per gear mesh).

For larger torques, consider the FHD Type gear coupling in sizes 10 through 30.

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Hub Style

Part Number

Description 

Hub Style

Max. Bore (Dimensions ID1/ID2)

Dimension FD

N/A F-1E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 1.654 in42 mm N/A 4.56 in115.82 mm
N/A F-1S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 1.654 in42 mm N/A 4.56 in115.82 mm
N/A F-1.5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 2.205 in56 mm N/A 6.00 in152.40 mm
N/A F-1.5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 2.205 in56 mm N/A 6.00 in152.40 mm
N/A F-2E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 2.874 in73 mm N/A 7.00 in177.80 mm
N/A F-2S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 2.874 in73 mm N/A 7.00 in177.80 mm
N/A F-2.5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 3.346 in85 mm N/A 8.38 in212.85 mm
N/A F-2.5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 3.346 in85 mm N/A 8.38 in212.85 mm
N/A F-3E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 4.213 in107 mm N/A 9.44 in239.78 mm
N/A F-3S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 4.213 in107 mm N/A 9.44 in239.78 mm
N/A F-3.5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 4.921 in125 mm N/A 11.00 in279.40 mm
N/A F-3.5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 4.921 in125 mm N/A 11.00 in279.40 mm
N/A F-4E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 5.709 in145 mm N/A 12.50 in317.50 mm
N/A F-4S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 5.709 in145 mm N/A 12.50 in317.50 mm
N/A F-4.5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 6.496 in165 mm N/A 13.63 in346.20 mm
N/A F-4.5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 6.496 in165 mm N/A 13.63 in346.20 mm
N/A F-5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 7.087 in180 mm N/A 15.31 in388.87 mm
N/A F-5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 7.087 in180 mm N/A 15.31 in388.87 mm
N/A F-5.5E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 7.874 in200 mm N/A 16.75 in425.45 mm
N/A F-5.5S-SLEEVE-W/O-RING N/A Shrouded Bolt N/A 7.874 in200 mm N/A 16.75 in425.45 mm
N/A F-6E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 8.858 in225 mm N/A 18.00 in457.20 mm
N/A F-7E-SLEEVE-W/O-RING N/A Exposed Bolt N/A 10.039 in255 mm N/A 20.75 in527.05 mm
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