Usually is mainly used for rolling bearing grease lubrication, and in many cases these grease lubrication coupling for, this is because the bearing and the flexible coupling characteristics of the work there exist many different.

 

In the bearing of friction pay was basically in the rolling friction (ball bearing), or in the rolling friction is give priority to with sliding friction (roller bearing); In addition, the vast majority of bearing grease dormant, is through the points the flow of oil and a small amount of grease to lubricating points added new fat. Most cases # 2 and # 3 of consistency in bearing grease can form in the channel flow state, be helpful for bearing seal and low bearing temperature rise, and adhesion of the excessive increase bearing temperature rise and power consumption, go against bearing lubrication.

 

According to the axis of the size of the coupling deflection Angle, the friction pay operation state can be divided into two conditions: deflection Angle in the axis is bigger, basically a sliding friction; In the axis Angle deflection is hours, in typical fretting wear state. At the same time, grease and coupling rotation together, not only to resist a grease the role of the centrifugal force, and it is through the centrifugal force of the coupling effects or conveying function complement grease. Therefore, in the coupling with larger adhesion of the and smaller points of the amount of oil to resist the role of grease centrifugal force, avoid oil separation and grease soap in the throw from coupling, that is to say, only adhere to the friction surface can rise of pay grease lubrication.Because of it has good fluidity, most cases more suitable for use in the coupling.

 

Often, especially in the steel industry, foreign metropolis recommend using special grease, but domestic average all use substitutes, therefore couplings frequent breakdowns, service life is opposite shorter.



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