The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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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.

F Type Gear Coupling
F Type Universal Rigid Hubs w/ Center - Imperial-2
Unit of Measure
Items F Type Gear Coupling
69790400135
F Type Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790408433
F Type Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790408803
F Type Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790408804
F Type Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790405901
F Type Flex Hubs with Keyway - Inch (Imperial) Bore
Description  N/A F-1-HUB-1"-1/4X1/8KW N/A F-1-HUB-1.125/1.126-1/4X1/8KW-SS N/A F-1-HUB-1.250/1.251-1/4X1/8KW N/A F-1-HUB-1.375/1.376-5/16X5/32KW N/A F-1-HUB-1.625/1.626-3/8X3/16KW
Bore Size  N/A 1 in N/A 1 1/8 in N/A 1 1/4 in N/A 1 3/8 in N/A 1 5/8 in
Type N/A Gear Coupling Hubs
Size N/A 1
Hub Material N/A AISI 1045
Set Screw Style Coupling Size (Dimension T) N/A No Setscrew
Keyway Size (W x D) N/A 1/4 x 1/8 in N/A 1/4 x 1/8 in N/A 1/4 x 1/8 in N/A 5/16 x 5/32 in N/A 3/8 x 3/16 in
Nominal Torque N/A 7600 in·lb850 N·m
Max Speed (Unbalanced) N/A 6000 rpm
Length thru Bore N/A 1.690 in
Style N/A Bored
Color N/A Metallic
Depth N/A 1.690 in42.93 mm
Max. Bore (Dimensions ID1/ID2) N/A 1.625 in42 mm
Dimension HD N/A 2.310 in58.67 mm
Coupling Type N/A Gear
Weight N/A 2.00 lb N/A 2.00 lb N/A 1.60 lb N/A 1.47 lb N/A 1.18 lb
Cubic inches N/A 9.01801 in³