F Type Flex Hubs with Keyway - Inch (Imperial) Bore On The Timken Company

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F Type Flex Hubs with Keyway - Inch (Imperial) Bores

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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Keyway Size (in)

Part Number	Bore Size	Keyway Size	Nominal Torque	Max Speed (Unbalanced)	Length thru Bore	Dimension HD	CAD

F-1-HUB-1"-1/4X1/8KW	N/A 1 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1.125/1.126-1/4X1/8KW-SS	N/A 1 1/8 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1.250/1.251-1/4X1/8KW	N/A 1 1/4 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1.375/1.376-5/16X5/32KW	N/A 1 3/8 in	N/A 5/16 x 5/32 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1.625/1.626-3/8X3/16KW	N/A 1 5/8 in	N/A 3/8 x 3/16 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1-1/2-3/8X3/16KW	N/A 1 1/2 in	N/A 3/8 x 3/16 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1-1/4-1/4X1/8KW	N/A 1 1/4 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1-1/8-1/4X1/8KW	N/A 1 1/8 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1-3/8-5/16X5/32KW	N/A 1 3/8 in	N/A 5/16 x 5/32 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-1-5/8-3/8X3/16KW	N/A 1 5/8 in	N/A 3/8 x 3/16 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-3/4-3/16X3/32KW	N/A 3/4 in	N/A 3/16 x 3/32 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-7/8-3/16X3/32KW	N/A 7/8 in	N/A 3/16 x 3/32 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.690 in	N/A 2.310 in58.67 mm	N/A
F-1-HUB-14T 12/24DP-SAE C	N/A 1 in	N/A 1/4 x 1/8 in	N/A 7600 in·lb850 N·m	N/A 6000 rpm	N/A 1.69 in	N/A 2.310 in58.67 mm	N/A
F-1.5-HUB-1.125/1.126-1/4X1/8KW	N/A 1 1/8 in	N/A 1/4 x 1/8 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1.250/1.251-1/4X1/8KW	N/A 1 1/4 in	N/A 1/4 x 1/8 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1.8735/1.8740-1/2X1/4KW-SS	N/A 1 7/8 in	N/A 1/2 x 1/4 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-1/2-3/8X3/16KW	N/A 1 1/2 in	N/A 3/8 x 3/16 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-1/4-1/4X1/8KW	N/A 1 1/4 in	N/A 1/4 x 1/8 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-1/8-1/4X1/8KW	N/A 1 1/8 in	N/A 1/4 x 1/8 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-3/4-3/8X3/16KW	N/A 1 3/4 in	N/A 3/8 x 3/16 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-3/8-5/16X5/32KW	N/A 1 3/8 in	N/A 5/16 x 5/32 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-3/8-3/8X3/16KW	N/A 1 3/8 in	N/A 3/8 x 3/16 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-5/8-3/8X3/16KW	N/A 1 5/8 in	N/A 3/8 x 3/16 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-1-7/8-1/2X1/4KW	N/A 1 7/8 in	N/A 1/2 x 1/4 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-2"-1/2X1/4KW	N/A 2 in	N/A 1/2 x 1/4 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-2.1250/2.1265-1/2X1/4KW	N/A 2 1/8 in	N/A 1/2 x 1/4 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-1.5-HUB-2-1/8-1/2X1/4KW	N/A 2 1/8 in	N/A 1/2 x 1/4 in	N/A 18900 in·lb2140 N·m	N/A 5500 rpm	N/A 1.940 in	N/A 3.000 in76.20 mm	N/A
F-2-HUB-1.250/1.251-1/4X1/8KW	N/A 1 1/4 in	N/A 1/4 x 1/8 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1.875/1.876-1/2X1/4KW	N/A 1 7/8 in	N/A 1/2 x 1/4 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1-1/2-3/8X3/16KW	N/A 1 1/2 in	N/A 3/8 x 3/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1-3/4-3/8X3/16KW	N/A 1 3/4 in	N/A 3/8 x 3/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1-3/8-5/16X5/32KW	N/A 1 3/8 in	N/A 5/16 x 5/32 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1-5/8-3/8X3/16KW	N/A 1 5/8 in	N/A 3/8 x 3/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-1-7/8-1/2X1/4KW	N/A 1 7/8 in	N/A 1/2 x 1/4 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2"-1/2X1/4KW	N/A 2 in	N/A 1/2 x 1/4 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-1/2-5/8X5/16KW	N/A 2 1/2 in	N/A 5/8 x 5/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-1/4-1/2X1/4KW	N/A 2 1/4 in	N/A 1/2 x 1/4 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-1/8-1/2X1/4KW	N/A 2 1/8 in	N/A 1/2 x 1/4 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-3/4-5/8X5/16KW	N/A 2 3/4 in	N/A 5/8 x 5/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-3/8-5/8X5/16KW	N/A 2 3/8 in	N/A 5/8 x 5/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2-HUB-2-5/8-5/8X5/16KW	N/A 2 5/8 in	N/A 5/8 x 5/16 in	N/A 31500 in·lb3560 N·m	N/A 5000 rpm	N/A 2.440 in	N/A 4.000 in101.60 mm	N/A
F-2.5-HUB-2.7479/2.7488-5/8X5/16KW	N/A 2 3/4 in	N/A 5/8 x 5/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-2-1/2-5/8X5/16KW	N/A 2 1/2 in	N/A 5/8 x 5/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-2-3/4-5/8X5/16KW	N/A 2 3/4 in	N/A 5/8 x 5/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-2-3/8-5/8X5/16KW	N/A 2 3/8 in	N/A 5/8 x 5/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-2-5/8-5/8X5/16KW	N/A 2 5/8 in	N/A 5/8 x 5/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-2-7/8-3/4X3/8KW	N/A 2 7/8 in	N/A 3/4 x 3/8 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-3"-3/4X3/8KW	N/A 3 in	N/A 3/4 x 3/8 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-3.3725/3.3738-7/8X5/16KW	N/A 3 3/8 in	N/A 7/8 x 7/16 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A
F-2.5-HUB-3-1/8-3/4X3/8KW	N/A 3 1/8 in	N/A 3/4 x 3/8 in	N/A 56700 in·lb6410 N·m	N/A 4400 rpm	N/A 3.030 in	N/A 4.630 in117.60 mm	N/A

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2 1/2
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2 1/8
2 3/4
2 3/8
2 5/8
2 15/16
2 7/8
3
3 1/2
3 1/4
3 1/8
3 3/4
3 3/8
3 7/8
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4
4 1/2
4 1/4
5
5 1/2
5 1/4
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9 3/8