The Timken Company - F Type Flex Hubs - Rough Stock Bore

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F Type Flex Hubs, Rough Stock Bore

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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Unit of Measure

Items	69790400132 F Type Flex Hubs - Rough Stock Bore	69790400148 F Type Flex Hubs - Rough Stock Bore	69790400165 F Type Flex Hubs - Rough Stock Bore	69790400184 F Type Flex Hubs - Rough Stock Bore	69790400196 F Type Flex Hubs - Rough Stock Bore
Description	N/A F-1-HUB-RSB	N/A F-1.5-HUB-RSB	N/A F-2-HUB-RSB	N/A F-2.5-HUB-RSB	N/A F-3-HUB-RSB
Size	N/A 1	N/A 1 1/2	N/A 2	N/A 2 1/2	N/A 3
Type	N/A Gear Coupling Hubs
Hub Material	N/A AISI 1045
Set Screw Style Coupling Size (Dimension T)	N/A No Setscrew
Nominal Torque	N/A 7600 in·lb850 N·m	N/A 18900 in·lb2140 N·m	N/A 31500 in·lb3560 N·m	N/A 56700 in·lb6410 N·m	N/A 94500 in·lb10700 N·m
Max Speed (Unbalanced)	N/A 6000 rpm	N/A 5500 rpm	N/A 5000 rpm	N/A 4400 rpm	N/A 4000 rpm
Height	N/A 2.310 in	N/A 3.00 in	N/A 4.000 in	N/A 4.630 in	N/A 5.630 in
Length thru Bore	N/A 1.690 in	N/A 1.940 in	N/A 2.440 in	N/A 3.030 in	N/A 3.590 in
Style	N/A Unbored
Color	N/A Metallic
Bore Type	N/A Rough Stock Bore
Max. Bore	N/A 1.625 in42 mm	N/A 2.125 in56 mm	N/A 2.750 in73 mm	N/A 3.250 in85 mm	N/A 4.000 in107 mm
Rough Stock Bore	N/A 0.44 in11 mm	N/A 0.69 in18 mm	N/A 0.94 in24 mm	N/A 1.44 in37 mm	N/A 1.44 in37 mm
Dimension HD	N/A 2.310 in58.67 mm	N/A 3.000 in76.20 mm	N/A 4.000 in101.60 mm	N/A 4.630 in117.60 mm	N/A 5.630 in143.00 mm
Coupling Type	N/A Gear
Weight	N/A 2.00 lb	N/A 4.13 lb	N/A 8.70 lb	N/A 15.00 lb	N/A 26.31 lb
Cubic inches	N/A 9.01801 in³	N/A 17.46000 in³	N/A 39.04000 in³	N/A 64.95381 in³	N/A 113.79187 in³
Overall Length	N/A 3.50 in	N/A 4.00 in	N/A 5.00 in	N/A 6.25 in	N/A 7.38 in
Flange Diameter (Dimension FD)	N/A 4.56 in	N/A 6.00 in	N/A 7.00 in	N/A 8.38 in	N/A 9.44 in
Distance between Shaft Ends (Dimension BSE)	N/A 0.13 in	N/A 0.13 in	N/A 0.13 in	N/A 0.19 in	N/A 0.19 in