Abstract:The impact on the performances of bentonite greases by dispersant agent, quantity of bottom oil, processing temperature and grinding clearance was studied with consistency and mechanical stability as index of bentonite greases. The results show that bottom oil has different responses to different dispersant agent, and also different dispersant agent is corresponded to different optimal adding amount. When using different evaluation index of consiste ncy and mechanical stability, the response size of dispersant agent to bottom oil is consistent, but the obtained optimal added amount of every kind dispersant agent is different, indicating that the mechanical stability of the grease is not the best at its maximum consistency. The study shows that the consistency and mechanical stability of bentonite grease are contradictory of two evaluation index, which are in need of coordinating by combining with the actual use conditions, so that the bentonite grease is suitable for the use environment.