The LK Torsional Coupling is a simple, robust, two-piece coupling consisting of an element or flywheel adapter flange together with a splined hub. It is used on applications that have a diesel, gasoline or natural gas engine driving one or more flange mounted hydraulic pumps. The couplings are torsionally very stiff (almost rigid) enabling drives of hydraulic pumps and similar equipment having low mass or inertia to operate below the critical speed. The very stiff LK raises the critical speed well above the operating range providing a drive free of any harmful torsional vibrations. The LK is an ideal choice for hydrostatic construction drives, mainly in the low to mid-power ranges.

Typical applications are: excavators, vibratory rollers, loaders, cranes, manlifts, forklifts, tractors, etc. Virtually all engine driven hydrostatic applications in the low to mid-power range can use the LK coupling.

Salient features and advantages:

• Compact, light, robust and safe in operation with long service life.
• Oil Resistant and suitable for temperatures of -40 °C up to +150 °C.
• High torsional stiffness-allowing operation below critical speed without resonances, provided it is correctly selected.
• Service free combination of sintered metal with highly shock resistant, temperature stabilized special polyamide.
• Short mounting length, easy assembly since it can be mounted axialy.
• The hubs can be equipped with the proven patented L-Loc clamping system. With L-Loc, the coupling hub can be fit to splined shafts absolutely free of movement to eliminate fretting.
• The hubs can be modified in form and length as needed.
• Various series for standardized SAE-flywheels and non-standard flywheels.
• Low priced and normally available from stock.