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Item # LCD-0075-X-C, Dynaflex® LCD Series Couplings



Application attachment means:
  • Flywheel to shaft.
  • Flywheel to hub (splined).
  • Shaft to shaft.
  • Floating shaft.
  • Many others.





Specifications  · General Description  · Note

Specifications

Shaft Rating at 2000 rpm

75 to 2000 hp

Capacity per 100 rpm

4.05 hp
3.02
kW

Torque Rating TN1

2500 lbs-in
282
N-m

Approximate Slip Torque2

8700 lbs-in
900
N-m

Torsional Rate kØ3

21000 lbs-in/rad
2373
N-m/rad

Axial Rate KA

2100 lbs/in
368
N/mm

Radial Rate KR

10000 lbs/in
1750
N/mm

Weight Mass

6.3 lbs
2.87
kg

Inner Member Inertia

0.04 lbs-in-sec2
0.004
kg-m2

Outer Member Inertia

0.07 lbs-in-sec2
0.007
kg-m2

Pilot Outer Diameter4

10.340 in
262.58
mm

B.C. Diameter

9.625 in
244.48
mm

Diameter C

2.813 in
71.45
mm

Diameter D5

3.313 in
84.14
mm

Diameter E

2.688 in
68.28
mm

Length F

2.00 in
50.8
mm

Length H

0.75 in
19.1
mm

Hole Diameter K

0.710 in
18.03
mm

Number of Holes L

6

Hole Size M

0.330 in
8.38
mm

Number of Holes N

3

Fits SAE Flywheel Number6

8

Reference Diameter P

6.80 in
172.7
mm

Browning Bushing P/N

Q1

Browning Bushing Bore Type 1 Diameter

3/4 to 2-1/16 in
19.05 to 52.3
mm

Browning Bushing Bore Type 2 Diameter

2-1/8 to 2-11/16 in
54.0 to 68.3
mm
1 Prolonged exposure to temperatures in the 0 ºF range and below produces a significantly reduced slip torque prior to driveline warm-up. This condition may result in the coupling's inability to transmit adequate drive torque for applications experiencing unusual cold temperature related parasitic loading.
2 Prolonged exposure to temperatures in the 0 ºF range and below produces a significantly reduced slip torque prior to driveline warm-up. This condition may result in the coupling's inability to transmit adequate drive torque for applications experiencing unusual cold temperature related parasitic loading.
3 Prolonged exposure to temperatures in the 0 ºF range and below produces a significantly reduced slip torque prior to driveline warm-up. This condition may result in the coupling's inability to transmit adequate drive torque for applications experiencing unusual cold temperature related parasitic loading.
4 Pilot diameter tolerances are + 0.000/ -0.005 in. for "A" and + 0.005/ -0.000 in. for "C" diameters.
5 Pilot diameter tolerances are + 0.000/ -0.005 in. for "A" and + 0.005/ -0.000 in. for "C" diameters.
6 Refer to SAE J620c for flywheel numbers 6-1/2, 10, 11-1/2, 16; to SAE J927a for numbers 60, 80, 100, 120, 160.


General Description
The Dynaflex coupling line has been developed to overcome numerous torsional problems associated with vehicular and industrial driveline systems. These couplings increase equipment life by protecting against torsional vibration, shock and misalignment. Other significant features and benefits are:

  • Vibration Isolation: extremely low torsional spring rate is achieved with the Dynaflex coupling, using elastomer in shear. This allows for low system natural frequencies and isolation of first mode driveline disturbances.

  • Damping at Resonance: the elastomer used in LCD couplings effectively reduces vibration at resonance.

  • Shock Protection: torsional shock loads are attenuated by large shear deflection of the elastomer. In the case of severe overloads, equipment damage is prevented by slippage between the elastomer and the outer housing.

  • Misalignment Accommodation: elastomer flexibility allows for angular, parallel and axial misalignment.

  • Long Service Life: Lord Dynaflex couplings have proven themselves under demanding and rugged service conditions.

  • Maintenance Free: elastomer flexibility accommodates all motion without wear, eliminates the need for lubrication.

  • Noise Reduction: no metal-to-metal contact; elastomer attenuates structure-borne noise and isolates vibration from components that would act as noise generators.

  • Attachment: fits many standard SAE flywheels.

  • Design Flexibility: standard rubber molds are used to produce each different size coupling shown in this catalog. Often it is necessary to change metal components for custom applications. This is common.

  • Systems Engineering: Lord has in-house computer capabilities for multi-mass torsional analysis to assist in proper coupling selection.




  • Note
    Blind assembly style with a notched periphery provides trouble-free, sliding assembly on flywheel drive pins when bolted access is not possible. Outer member is a composite material
    Use Woods Sure-Grip® Bushing type SK or equivalent.
    Tapered.



     DOWNLOADS 

    Dynaflex® LCD Series Coupling Typical Applications & Selection Guide
    (PDF, 1223KB)