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Three-ring gear reducer finds widely application in mines, metallurgy, petroleum, chemical industry, rubber and plastic, building and materials, hoisting, transportation, food and light industry etc. 

Depending upon the application, these are available with different versions that are ZZSH type pile drilling single-stage three-ring reducer, SHZP type combination of secondary-stage transmission three-ring reducer, SHCDP type combination of secondary-stage transmission three-ring reducer, SHZ type combination of secondary-stage transmission three-ring reducer, SHL type single-stage three-ring reducer, QXSH type crane specified three-ring reducer, MSH type cement mill specified three-ring reducer, SHC1 type combination of secondary-stage transmission three-ring reducer, SHLD type single-stage three-ring reducer, SHC2 type combination of secondary-stage transmission three-ring reducer , SH type basic three-ring reducer, YPSH type disc feeder specified  three-ring reducer, SHP type single-stage three-ring reducer etc.

The three-ring gear reducer we independent manufactured, features in less teeth error with planetary transmission, parallel arranged between the output and the input shaft, and paralleled axis of the cylindrical gear reducer. Has strong capacity of bearing and overload, with large transmission ratio and intensive classification, of high-efficient compact small sized and light weight, easy to assembly or disassembly for maintenance purposes by widely and broad applicability etc.