Ring Encoder Design Simplifies Service, Handling

Leine & Linde has expanded the range of sizes for its MRI 2000 ring encoder, available from Heidenhain. Designed to provide a feedback solution for large rotating machinery typical of the construction, pulp and paper, oil and gas, wind, and marine industries, the MRI ring encoder line has also been updated to enable relaxed tolerances for the sensor pickup mounting.

The ring encoder is segmented into pieces, which simplifies commissioning and service. With a segmented ring, the pieces can be mounted (via ClampFit or flanges) between machinery parts from two sides of a shaft and screwed together. The encoder’s segmentation also eases handling when transporting and storing the ring. Virtually any size of ring is possible ranging to 1 m inner diameter, and available resolutions range from 1 to 16,383 signal periods per revolution.

With the Clamp-Fit mounting method, the ring segments are screwed together in such a way that automatically tightens the ring around the mating shaft. This enables affixing the ring to a large cylindrical shaft without any flange surface considerations and without the need for stub shafts. The Clamp-Fit design is available in three sizes: 100, 235 and 325 mm.

Alternatively, the segmented ring can be assembled and mounted with axial screws to a flange or face on the shaft. The flange-mounted design is offered in five sizes: 310, 325, 430, 737 and 765 mm.