FA Type (Alloy Steel) Flex Hubs - Rough Stock 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).

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Item #

Description 

Nominal Torque

Max. Speed (Unbalanced)

Length Through Bore (LTB)

Overal Coupling Length (OAL)

Max. Bore (Dimensions ID1/ID2)

Dimension HD

N/A FA 1 HUB RSB N/A 11300 in·lb1280 N·m N/A 6000 rpm N/A 1.690 in42.93 mm N/A 3.50 in88.90 mm N/A 1.625 in42 mm N/A 2.310 in58.67 mm
N/A FA 1.5 HUB RSB N/A 22700 in·lb2560 N·m N/A 5500 rpm N/A 1.940 in49.28 mm N/A 4.00 in101.60 mm N/A 2.125 in56 mm N/A 3.000 in76.20 mm
N/A FA 2 HUB RSB N/A 39000 in·lb4410 N·m N/A 5000 rpm N/A 2.440 in61.98 mm N/A 5.00 in127.00 mm N/A 2.750 in73 mm N/A 4.000 in101.60 mm
N/A FA 2.5 HUB RSB N/A 69300 in·lb7930 N·m N/A 4400 rpm N/A 3.030 in76.96 mm N/A 6.25 in158.75 mm N/A 3.250 in88 mm N/A 4.630 in117.60 mm
N/A FA 3 HUB RSB N/A 118000 in·lb13300 N·m N/A 4000 rpm N/A 3.590 in91.19 mm N/A 7.38 in187.45 mm N/A 4.000 in107 mm N/A 5.630 in143.00 mm
N/A FA 3.5 HUB RSB N/A 177000 in·lb20000 N·m N/A 3500 rpm N/A 4.190 in106.43 mm N/A 8.63 in219.20 mm N/A 4.625 in124 mm N/A 6.5 in165.10 mm
N/A FA 4 HUB RSB N/A 263400 in·lb29760 N·m N/A 3000 rpm N/A 4.750 in120.65 mm N/A 9.75 in247.65 mm N/A 5.375 in147 mm N/A 7.500 in190.50 mm
N/A FA 4.5 HUB RSB N/A 354000 in·lb40000 N·m N/A 2700 rpm N/A 5.310 in134.87 mm N/A 10.94 in277.88 mm N/A 6.000 in167 mm N/A 8.500 in215.90 mm
N/A FA 5 HUB RSB N/A 508600 in·lb57470 N·m N/A 2500 rpm N/A 6.030 in153.16 mm N/A 12.38 in314.45 mm N/A 6.500 in176 mm N/A 9.500 in241.30 mm
N/A FA 5.5 HUB RSB N/A 670700 in·lb75790 N·m N/A 2200 rpm N/A 6.910 in175.51 mm N/A 14.13 in358.90 mm N/A 7.500 in202 mm N/A 10.50 in266.70 mm
N/A FA 6 HUB RSB N/A 877100 in·lb99110 N·m N/A 2100 rpm N/A 7.41 in188.21 mm N/A 15.130 in384.30 mm N/A 8.250 in225 mm N/A 11.50 in292.10 mm
N/A FA 7 HUB RSB N/A 179300.00 in·lb133260 N·m N/A 2000 rpm N/A 8.690 in220.73 mm N/A 17.75 in450.85 mm N/A 9.5 in255 mm N/A 13.000 in330.20 mm
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