Date: 2013-08-20

The parsing tune aligning ball bearing grease intensity limit

Aligning ball bearing grease ultimate strength depends largely on the type of the thickening agent in the amount of grease out of containing soap volume increased, the strength limit is also increased. The bearing grease intensity limit temperature. The higher the temperature, the smaller the ultimate strength of the lipid; temperature decreases, the strength limit of the lipid is increased. Can be broadly based on the high temperature strength limit the maximum applicable temperature grease. In the actual use of the bearing grease, the application of the ultimate strength of bearing grease between the range of about 100-300Pa. Generally, the fluidity of the bearing grease is often based on the limit of high temperature strength is expected to its easy-flowing, while similar to a low temperature viscosity values to predict whether it can be normal flow.
The ultimate strength of the aligning ball bearing grease is caused by the shear stress of the sample starts to flow, also referred to as the yield stress or strength limit stress, referred to as the ultimate strength. Bearing grease for the ultimate strength of the letter τ units Pa. The standard method of determination of the ultimate strength of the bearing grease is SH / T 0323-92, bearing grease in a plastic screw tube is measured at the test temperature under the maximum pressure when the displacement occurs, and replaced with a strength limit.
Aligning ball bearing lubrication methods:
NSK bearing lubrication methods, divided into grease and oil lubrication. In order to make the bearing play function, first, to select the appropriate conditions of use, the purpose of the lubrication method. If only to consider lubrication, oil lubrication lubrication dominant. However, the grease around the bearing structure can be simplified expertise, compare the pros and cons of grease and oil lubrication.
Second, the purpose of aligning ball bearing lubrication:
The rolling bearing lubrication to reduce friction and wear of the bearing internal to prevent sticking, its lubrication utility are as follows.
<1>. Reduce friction and wear.
In constituting the bearing rings, rolling elements and a retainer of the mutual contact portions, to prevent metal to metal contact to reduce friction, wear.
<2>. Extended fatigue life.
The rolling fatigue life of the bearing, in rotation, the rolling contact surface of good lubrication, the extension. Conversely, the oil viscosity is low, the thickness of the lubricant film is not good, then the shortened
<3>. Discharging the friction heat, and cooled.
Loop oiling method or the like can be oil discharge the heat generated by friction, or the heat coming from an external cooling. Prevent bearing overheating, aging prevent lube itself.
<4> Other
Also to prevent the intrusion of foreign matters inside the bearing, or prevent rust, corrosion effect

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