Study on New Bimetal Floating Seal of High Speed Roller Bit Bearing
ANSYS software has been used for high speed rock bit bimetal floating seal finite element analysis, as a result, overlarge pressure of bearing seal, unreasonable pressure distribution and overlarge compression ratio of rubber ring, are main reasons for premature failure of the bearing seal. For this, the optimal design and analysis of bearing seal structure is carried out in this paper. The results showed that: the new structure of the bearing seal has effectively reduced the compression ratio of rubber ring, improved the sealing pressure distribution based on reliable sealing conditions and further reduced the sealing pressure peak. The design of dynamic metal ring flywheel lubrication groove and the application of static metal ring antifriction material surface engineering technology have obviously reduced surface friction factor and wear of metal ring, greatly improved the effectiveness and life of the seal, and further extended the bit’s life.
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Z. Q. Huang et al., "Study on New Bimetal Floating Seal of High Speed Roller Bit Bearing", Advanced Materials Research, Vols. 233-235, pp. 2158-2165, 2011