Inkoma KWK Inkocoss couplings from Francis and Francis
In this coupling, two steel pins act as circular planular keys, locked into shallow grooves, cut at 90° to each other, on either side of the central steel disc. Each pin also slots radially into a deep circular-section, low friction, bushed groove, across the inner face of the two steel end-hubs, enabling large radial and angular movements.
As the bushed groove, circular-section, in both end-hubs exceeds 180°, all 3 coupling discs are axially retained, within a tight tolerance; thereby making the design ideal for precise transmission of axial push-pull actions, as well as a torsionally stiff rotary drive connector.
With its free-pivoting around - and easy-slide radial movement along-the 90° 'crossed' pins, between the two end-hubs and with minimal side/support-bearing loading, or misalignment restoration forces, other than from the central disc centrifugal mass, it also offers true constant velocity, good fail-safe, high torque transmission, whilst mounting and removal are simply achieved.
Typical applications include: valve actuation, pick-and-place and printed circuit board machines, screw jacks and cylinder/piston action connections.
Shaft connections are via flange as standard, or bossed end discs.
The Range accommodates normal torques (TStat) up to 13,000Nm, for shaft diameters up to 160mm and maximum offsets up to ±15mm and angular misalignment up to ±3° (at low speeds).