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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FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore

For use with FA (Alloy Steel) Flex-Flex couplings.

The FA Type coupling provides a higher nominal torque value than standard F Type couplings, and consists of two FA Type flex hubs, two FA Type sleeves (with seals) 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 FA Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).

F Type Gear Coupling
FA Type Alloy Steel Flex-Flex Coupling Sleeves w/ O-Ring - Imperial-2
Unit of Measure
Items F Type Gear Coupling
69790411516
FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790411735
FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore 		F Type Gear Coupling
69790414566
FA Type (Alloy Steel) Flex Hubs with Keyway - Inch (Imperial) Bore
Description  N/A FA-3.5-HUB-3-5/8-7/8X7/16KW N/A FA-5.5-HUB-7"-1-3/4X3/4KW N/A FA-6-HUB-8"-2"X3/4KW
Bore Size  N/A 3 5/8 in N/A 7 in N/A 8 in
Hub Style N/A Exposed Bolt
Type N/A Gear Coupling Hubs
Size N/A 3 1/2 N/A 5 1/2 N/A 6
Hub Material N/A Alloy Steel
Set Screw Style Coupling Size (Dimension T) N/A No Setscrew
Keyway Size (W x D) N/A 7/8 x 7/16 in N/A 1 3/4 x 3/4 in N/A 2 x 3/4 in
Nominal Torque N/A 177000 in·lb20000 N·m N/A 670700 in·lb75790 N·m N/A 877100 in·lb99110 N·m
Max. Speed (Unbalanced) N/A 3500 rpm N/A 2200 rpm N/A 2100 rpm
Max. Speed (Balanced) N/A 5250 rpm N/A 3300 rpm N/A 3150 rpm
Length Through Bore (LTB) N/A 4.190 in106.43 mm N/A 6.910 in175.51 mm N/A 7.41 in188.21 mm
Width N/A 6.500 in N/A 10.500 in N/A 11.500 in
Style N/A Bored
Overall Length N/A 8.63 in219.20 mm N/A 14.13 in358.90 mm N/A 15.130 in384.30 mm
Color N/A Metallic
Max. Bore (Dimensions ID1/ID2) N/A 4.625 in124 mm N/A 7.500 in202 mm N/A 8.250 in225 mm
Dimension AD N/A 9.380 in238.25 mm N/A 14.38 in365.252 mm N/A 17.000 in431.80 mm
Dimension D N/A 7.910 in200.91 mm N/A 12.72 in323.09 mm N/A 14.000 in355.60 mm
Dimension FD N/A 11.00 in279.40 mm N/A 16.75 in425.45 mm N/A 18.00 in457.20 mm
Dimension HD N/A 6.5 in165.10 mm N/A 10.50 in266.70 mm N/A 11.50 in292.10 mm
Distance between Shaft Ends (Dimension BSE) N/A 0.250 in6.35 mm N/A 0.310 in7.87 mm N/A 0.310 in7.87 mm
Parallel Misalignment N/A 0.130 in N/A 0.220 in N/A 0.120 in
Coupling Type N/A Gear
Weight N/A 40.00 lb N/A 149.00 lb N/A 118.09 lb
Complete Coupling Weight N/A 130.00 lb N/A 520.00 lb N/A 650.00 lb
Cubic inches N/A 177.02750 in³ N/A 291.94750 in³ N/A 979.97250 in³
Max. Angular Misalignment N/A 1.50º per Gear Mesh