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After first installing a single rotation of the bearing plate with your hands turn. Check the bearing rotation flexibility, no anomalies, power run check again.
Bearing transient high temperature can make the surface of the grinding area some depth (10~100nm) were heated to above the workpiece heating tempering temperature. Do not reach under the temperature of austenite, as the heated temperature increases, the surface layer-by-layer corresponds to the heating temperature or high temperature Tempering Tempering microstructure transformation of hardness also declined. Higher heating temperature and decline in hardness and the more powerful.
Most of the bearing temperature at around 200 ° c, and tend to be higher, if not through brute force cooling, the temperature will continue to rise and to the detriment of bearing strength and hardness to, once you lose the ability to maintain the exact shape of the bearing, will increase friction and temperature rise rapidly, further lead to reduced material strength and hardness of bearing failure very quickly.
Due to bearing wear is very sensitive, and prone to debris, if not excluded from bearing in a timely manner, a vicious, rapid failure of the bearing.
Bearing lubrication tasks must effectively serve a lubricant moving surfaces of bearing, and carry away the rejected heat from your bearing, while bearing the debris particles or dirt removed.
Ball bearing cages can be divided into cages and solid cage. Rolling bearing working, heating in the bearings due to sliding friction and wear, especially under operating conditions, due to the effects of centrifugal force, accelerated wear and heat, cage of will cause serious burns and fractures, causing bearings in normal use. Cage damage occupies a larger proportion in bearing failure. While in the cage in the cause of the damage, retainer material quality is one of the main reasons.
Transient high temperature of the bearing when the grinding zone heating to the workpiece surface temperature of austenite (Ac1) above, the layer of austenitic organization during the subsequent cooling process, and again quenched martensite organizations. Wherever the second workpiece quenching Burns, the secondary hardening layer must be very low hardness under high-temperature tempering.
1, normal use should be replaced after one year 2# and spindle oil coarse-fine filter.
2, normal use pumping stations would add oil 3 layers of silk cloth filters when you attend.
3, spindle pulley, wheel loading and unloading in pump station when you stop working state. Spindle in a State of hydrostatic oil float stops. Do not damage the spindle and hydrostatic bearings.
4, see pump pressure before the Wheel spindle and grinding head static pressure can be within the standard range.
5, equipment downtime, be sure to stop the grinding head motor, wheel has stopped, turn off the pump, otherwise easy to damage head.
6, for any of the pumping station components, be sure to first remove the high-pressure oil hose fittings, after you change the part, self-loop circuit 15-20 front minutes into the tubing connected to the grinding head can be, this guarantee into the grinding head spindle is a hyper-clean spindle oil fine filter. This would extend the application of hydrostatic spindle life.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7217ATYNDBLP4 NSK | 85 | 150 | 28 |
| 7217A5TYNDBLP4 NSK | 85 | 150 | 28 |