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    The LF Series coupling is designed with a unique and highly versatile elastomeric element. These can be easily integrated into a variety of coupling configurations to meet several application needs. LF Style elements are available in a variety of materials to match the necessary coupling dampening characteristics for tuning the systems critical speed away from the application operating speed.

    The element can be connected axially to a flywheel adapter plate or flanged hub and radially to a cylindrical center hub using the appropriate bolts. Axial bolt styles include either socket head bolts with a special dry adhesive, or S-Style bolts, which are similar to dowel pins (seen picture below). The radial bolts are used to connect the element to the cylindrical hub. This unique design is remarkably simple, highly effective and gives the LF torsional coupling unmatched performance capabilities. The coupling selection should be verified with a Torsional Vibration Analysis (TVA) of the system.
Unit of Measure
Items
LF Series Torsional Coupling Cylindrical Hubs - Imperial

LF Series Cylindrical Hubs - Rough Stock Bore

LF Series Torsional Coupling Cylindrical Hubs - Imperial

LF Series Cylindrical Hubs - Rough Stock Bore

LF Series Torsional Coupling Cylindrical Hubs - Imperial

LF Series Cylindrical Hubs - Rough Stock Bore

LF Series Torsional Coupling Cylindrical Hubs - Imperial

LF Series Cylindrical Hubs - Rough Stock Bore

LF Series Torsional Coupling Cylindrical Hubs - Imperial

LF Series Cylindrical Hubs - Rough Stock Bore
Description  N/A LF1 HUB CYL .31 RSB N/A LF2 HUB CYL .39 RSB N/A LF4 HUB CYL .47 RSB N/A LF8 HUB CYL .47 RSB N/A LF12 HUB CYL .50 RSB
Rough Stock Bore Size N/A 0.310 in N/A 0.390 in N/A 0.470 in N/A 0.470 in N/A 1/2 in
Coupling Size N/A LF1 N/A LF2 N/A LF4 N/A LF8 N/A LF12
Hub Style N/A Cylindrical
Coupling Type N/A Torsional
Thread (Dimension T) N/A M6 N/A M8 N/A M8 N/A M10 N/A M11
Length thru Bore N/A 0.940 in24.00 mm N/A 1.100 in28.00 mm N/A 1.180 in30.00 mm N/A 1.650 in42.00 mm N/A 1.650 in42.00 mm
Dimension HD N/A 1.180 in30.00 mm N/A 1.57 in40.00 mm N/A 1.77 in45 mm N/A 2.360 in60.00 mm N/A 2.360 in60.00 mm
Color N/A Metallic
Normal Temperature Range N/A -40 to 194 ºF
Nominal Torque N/A 90.00 in·lb N/A 180.00 in·lb N/A 440.00 in·lb N/A 885.00 in·lb N/A 1240.00 in·lb
Max. Torque N/A 200.00 in·lb N/A 530.00 in·lb N/A 1100.00 in·lb N/A 2480.00 in·lb N/A 3190.00 in·lb
Allowable Continuous Vibratory Torque N/A 44.00 in·lb N/A 89.00 in·lb N/A 180.00 in·lb N/A 355.00 in·lb N/A 440.00 in·lb
Bore Type N/A Rough Stock Bore
Min. Bore (Dimensions ID1/ID2) N/A 0.310 in8.00 mm N/A 0.440 in10.00 mm N/A 0.470 in12 mm N/A 0.500 in12 mm N/A 0.500 in12 mm
Max. Bore (Dimensions ID1/ID2) N/A 0.63 in19.00 mm N/A 0.880 in26.00 mm N/A 1.000 in30.00 mm N/A 1.380 in38 mm N/A 1.380 in38 mm
Max. Speed N/A 10000 rpm N/A 8000 rpm N/A 7000.00 rpm N/A 6500.00 rpm N/A 6500.00 rpm
Max. Angular Misalignment N/A 3.00 º N/A 3.00 º N/A 3.00 º N/A 3.00 º N/A 2.00 º
Max. Parallel Misalignment N/A 0.060 in1.50 mm N/A 0.060 in1.50 mm N/A 0.060 in1.50 mm N/A 0.080 in2.00 mm N/A 0.080 in2.00 mm
Wind-Up Angle at Nominal Torque N/A 6.00 º N/A 6.00 º N/A 5.00 º N/A 5.00 º N/A 3.00 º
Wind-Up Angle at Max. Torque N/A 17.00 º N/A 17.00 º N/A 12.00 º N/A 14.00 º N/A 7.50 º
Dynamic Torsional Stiffness N/A 1240.00 in·lb/rad N/A 2570.00 in·lb/rad N/A 7500.00 in·lb/rad N/A 13300.00 in·lb/rad N/A 38900.00 in·lb/rad
Static Angular Stiffness N/A 2.66 in·lb/deg N/A 2.66 in·lb/deg N/A 21.30 in·lb/deg N/A 31.90 in·lb/deg N/A 80.00 in·lb/deg
Static Axial Stiffness N/A 220.00 lb/in N/A 130.00 lb/in N/A 430.00 lb/in N/A 430.00 lb/in N/A 1430.00 lb/in
Static Radial Stiffness N/A 860.00 lb/in N/A 860.00 lb/in N/A 2860.00 lb/in N/A 2860.00 lb/in N/A 5710.00 lb/in
Shore Hardness N/A 60A
Weight N/A 0.26 lb N/A 0.55 lb N/A 0.72 lb N/A 2.00 lb N/A 1.87 lb
Cubic inches N/A 1.30886 in³ N/A 2.71139 in³ N/A 3.69682 in³ N/A 9.18984 in³ N/A 9.18984 in³