The document introduces a cross-disc coupling called NK. This coupling is made of steel and is suitable for driving slow-running rotary cam switches. It can compensate for axial, radial, and angular displacements. The mechanical data of the coupling includes information about flanges, cross-disc, retaining bolts, etc., as well as maximum speed, maximum torque, and other limitations. The coupling requires no maintenance and can be used in any fitting position.
The Leonard NK is a cross‑disk coupling made of high‑grade steel, designed for driving slow‑running rotary cam switches. It compensates axial, radial, and angular displacements and can be fitted in any position.
Key specifications include a maximum drive speed of 500 r.p.m., a torque rating of 5 Nm, operating temperatures from –30 °C to +100 °C, and a weight of 2 kg. The coupling features a square‑head M8 retaining bolt, a green hammer‑finished housing (RAL 6011), and standard bore sizes of @25H7 (max) and @15H7/A20H7 (normal).
| Material | high‑grad steel |
|---|---|
| Retaining bolt | square‑head bolt DIN 478 - M8 |
| Housing colour | RAL 6011 "green hammer finish" |
| Normal boring | @15H7, A20H7 |
| Maximum drive speed | 500 r.p.m. |
| Operating temperature | -30 °C to +100 °C |
| Storage temperature | -50 °C to +120 °C |
The maximum drive speed is 500 r.p.m.
It operates from –30 °C to +100 °C.