Grating encoding ware

The utility model discloses a grating encoding ware, which comprises a housin, a main bod, main shaft and grating disc, the main shaft passes through the bearing with the main part and is connected, be equipped with first oil blanket between casing top and the main shaft, the outer tip of seal lip and the main shaft in close contact with of first oil blanket, still be equipped with first sealed dish in the casing, first sealed dish fix on the main shaft and with the coaxial setting of main shaft, be equipped with a plurality of first ring packing teeth on the first sealed dish, casing top inboard is equipped with a plurality of first annular dogtooths, the first tortuous clearance of formation is inserted to crisscross the inlaying of first ring packing tooth and first annular dogtooth, the grating encoding ware during operation, the high -speed gyration of main shaft and first sealed dish, first oil blanket and main shaft be contact -type sealing, can the external liquid of effectualprevention, dust, air etc