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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.
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Timken Part Number

Description 

Rough Stock Bore Size

Length thru Bore

Dimension HD

Nominal Torque

Max. Bore (Dimensions ID1/ID2)

68514424496 N/A LF1 HUB CYL .31 RSB N/A 0.310 in N/A 0.940 in24.00 mm N/A 1.180 in30.00 mm N/A 90.00 in·lb N/A 0.63 in19.00 mm
68514424498 N/A LF2 HUB CYL .39 RSB N/A 0.390 in N/A 1.100 in28.00 mm N/A 1.57 in40.00 mm N/A 180.00 in·lb N/A 0.880 in26.00 mm
68514424500 N/A LF4 HUB CYL .47 RSB N/A 0.470 in N/A 1.180 in30.00 mm N/A 1.77 in45 mm N/A 440.00 in·lb N/A 1.000 in30.00 mm
68514424502 N/A LF8 HUB CYL .47 RSB N/A 0.470 in N/A 1.650 in42.00 mm N/A 2.360 in60.00 mm N/A 885.00 in·lb N/A 1.380 in38 mm
68514445201 N/A LF12 HUB CYL .50 RSB N/A 1/2 in N/A 1.650 in42.00 mm N/A 2.360 in60.00 mm N/A 1240.00 in·lb N/A 1.380 in38 mm
68514424504 N/A LF16 HUB CYL .59 RSB N/A 0.590 in N/A 1.970 in50.00 mm N/A 2.760 in70.00 mm N/A 1770.00 in·lb N/A 1.630 in48.00 mm
68514445199 N/A LF22 HUB CYL .59 RSB N/A 0.590 in N/A 1.970 in50.00 mm N/A 2.760 in70.00 mm N/A 2430.00 in·lb N/A 1.630 in48.00 mm
68514424506 N/A LF25 HUB CYL .59 RSB N/A 0.590 in N/A 2.160 in55.00 mm N/A 3.350 in85.00 mm N/A 2790.00 in·lb N/A 2.130 in55 mm
68514445197 N/A LF28 HUB CYL .59 RSB N/A 0.590 in N/A 2.160 in55.00 mm N/A 3.350 in85.00 mm N/A 3700.00 in·lb N/A 2.130 in55 mm
68514424508 N/A LF30 HUB CYL .71 RSB N/A 0.710 in N/A 2.600 in66.00 mm N/A 3.94 in100 mm N/A 4400.00 in·lb N/A 2.440 in65 mm
68514424510 N/A LF50/80 HUB CYL .71 N/A 0.710 in N/A 2.600 in66.00 mm N/A 3.94 in100 mm N/A N/A 2.440 in61.98 mm
68514424512 N/A LF90 HUB CYL 1.18 RSB N/A 1.180 in N/A 3.150 in80.00 mm N/A 4.920 in125.00 mm N/A 9700 in·lb N/A 3.350 in85 mm
68514424514 N/A LF140 HUB CYL 1.18 RSB N/A 1.180 in N/A 3.150 in80.00 mm N/A 4.920 in125.00 mm N/A 15000.00 in·lb N/A 3.350 in85 mm
68514424516 N/A LF250 HUB CYL 1.57 RSB N/A 1.570 in N/A 3.940 in100.00 mm N/A 6.300 in160.00 mm N/A 26500.00 in·lb N/A 4.250 in105.00 mm
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