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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FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore

For use with FLA (Flex-Flex All-Metal Labyrinth Seal) and FLAFR (Flex-Rigid All-Metal Labyrinth Seal) couplings.

The FLA Type coupling consists of two special FLA Type flex hubs, two FLA 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 FLA Type has a max angular misalignment of 3.0 degrees (1.5 degrees per gear mesh).

The FLAFR Type coupling consists of one special FLA flex hub, one FA rigid hub, one FLA flex 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 FLAFR Type has a max angular misalignment of 1.5 degrees (1.5 degrees per gear mesh).

FLA Gear Coupling
FLA Type Flex-Flex All-Metal Labyrinth Seal Coupling Sleeves - Imperial-2
Unit of Measure
Items FLA Gear Coupling
69790491091
FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore 		FLA Gear Coupling
69790491092
FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore 		FLA Gear Coupling
69790491093
FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore 		FLA Gear Coupling
69790491094
FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore 		FLA Gear Coupling
69790491095
FLA Type (Flex-Flex All-Metal Labyrinth Seal) Flex Hubs - Rough Stock Bore
Description  N/A FLA-1.5-HUB-RSB N/A FLA-2-HUB-RSB N/A FLA-2.5-HUB-RSB N/A FLA-3-HUB-RSB N/A FLA-3.5-HUB-RSB
Size N/A 1 1/2 N/A 2 N/A 2 1/2 N/A 3 N/A 3 1/2
Hub Style N/A Exposed Bolt
Type N/A Gear Coupling Hubs
Hub Material N/A All Metal
Nominal Torque N/A 15000.00 in·lb N/A 35500.00 in·lb N/A 69300 in·lb N/A 118900.00 in·lb N/A 188500.00 in·lb
Max. Speed (Unbalanced) N/A 12000 rpm N/A 9300.00 rpm N/A 7900.00 rpm N/A 6800.00 rpm N/A 6000 rpm
Max. Speed (Balanced) N/A 18000 rpm N/A 13950.00 rpm N/A 11850.00 rpm N/A 10200.00 rpm N/A 9000.00 rpm
Length thru Bore N/A 1.94 in49.28 mm N/A 2.440 in61.98 mm N/A 3.030 in76.96 mm N/A 3.590 in91.19 mm N/A 4.190 in106.43 mm
Style N/A Unbored
Overall Length N/A 4.190 in106.43 mm N/A 5.190 in131.83 mm N/A 6.440 in163.58 mm N/A 7.690 in195.33 mm N/A 8.880 in225.55 mm
Color N/A Metallic
Bore Type N/A Rough Stock Bore
Max. Bore (Dimensions ID1/ID2) N/A 0.380 in9 mm N/A 0.500 in12.00 mm N/A 0.750 in19.00 mm N/A 1.130 in28.00 mm N/A 1.5 in38 mm
Dimension D N/A 3.970 in100.84 mm N/A 4.910 in124.71 mm N/A 5.91 in150.11 mm N/A 6.910 in175.51 mm N/A 7.910 in200.91 mm
Dimension FD N/A 6.00 in152.40 mm N/A 7.00 in177.80 mm N/A 8.38 in212.85 mm N/A 9.44 in239.78 mm N/A 11.00 in279.40 mm
Dimension HD N/A 2.190 in55.63 mm N/A 2.880 in73.15 mm N/A 3.630 in92.20 mm N/A 4.250 in107.95 mm N/A 5.00 in127.00 mm
Dimension W N/A 1.500 in38.10 mm N/A 1.500 in38.10 mm N/A 1.750 in44.45 mm N/A 1.750 in44.45 mm N/A 2.250 in57.15 mm
Center Line to Center Line of Teeth N/A 3.250 in82.55 mm N/A 4.000 in101.60 mm N/A 5.000 in127.00 mm N/A 6.000 in152.40 mm N/A 7.000 in177.80 mm
Distance between Shaft Ends (Dimension BSE) N/A 0.13 in3.30 mm N/A 0.13 in3.30 mm N/A 0.19 in4.83 mm N/A 0.19 in4.83 mm N/A 0.25 in6.35 mm
Parallel Misalignment N/A 0.028 in N/A 0.035 in N/A 0.044 in N/A 0.052 in N/A 0.061 in
Coupling Type N/A Gear
Complete Coupling Weight N/A 17.60 lb N/A 29.10 lb N/A 50.90 lb N/A 74.40 lb N/A 120.00 lb
Weight N/A 2.96 lb N/A 7.00 lb N/A 11.50 lb N/A 19.67 lb N/A 32.50 lb
Cubic inches N/A 9.30443 in³ N/A 20.23834 in³ N/A 39.92601 in³ N/A 64.84438 in³ N/A 104.75000 in³
Max. Angular Misalignment N/A 1.50º per Gear Mesh