Reducers and gear wheels

High speed and heavily loaded cylinder herringbone gear (with rotation frequency 6,000 rpm, transmission power 2.4 MW. The drive gear shaft weight is 1,510 kg; the driven one’s weight is 217 kg. Tooth wheels are constructed from forged pieces V KP 70 (steel 34ХНЗМА) with the 4th degree of strength (GOST 1643–81), with the application of gear grinding and consequent dynamic balancing. Teeth were relieved to meet the strict demands for performance characteristics including low vibration and noise. The quality control management of the product on each stage of production guaranteed the product high quality.

In the process of damage identification some broken details of an outbound planetary gear were detected and discarded. After the analysis and diagnostics in compliance with all the technical demands the duplicate details were manufactured: epicycle (crown tooth wheel), sun gear, satellites as well as shafts and liners. All the details were set into the original mounting seats inside the body frame, then we fulfilled the gear reducer assembly, running and acceptance tests.

Heavily loaded bevel gear and pinion with the straight teeth, the parameters of the drive gear: m=26; z=12. The parameters of the driven wheel: m=26; z=96. The diameter of the driven wheel is 2.7 m, the weight is 1,439 kg. The material used is high-strength cast iron HDCI70 (VCh170) GOST 7293–85.