Slewing Bearing Failure
1. Excavation of the rotary bearing of the rig appears intermittent sound - like crushed crushed stone, Slewing Bearing harsh metal crushed sound, fault to tell you that the slewing bearing has been worn seriously.
2. Excavation of the rotary bearing of the upper and lower ring gap is obviously open, you can simply measure the four points of the rotary bearing, outside the ring gear, or the ring gear as a benchmark to determine the gap between the inner and outer ring, if more than 2 mm below, Can still adhere to February, Slewing Bearing more than 3 mm above the bearing facing the edge of the collapse.
3. Rotary bearing sealing system and lubrication system is the protection of rotary bearings and maintenance system, 85% of the users did not do this, Slewing Bearing all the reasons is that the operator, Slewing Bearing especially the driver of their own way, resulting in rotary bearing dry consumption.
4. Excavation of drilling machine rotary bearing failure can also be seen in the work of the time, jitter, vibration or forward and backward, Slewing Bearing rotary bearing deformation reached a serious level.
5. digging drilling machine rotary bearing turntable bearings and slewing bearings directly stuck, Slewing Bearing is the last user had to stop the final results, Slewing Bearing and even the user directly forced to pull the rotary bearing rotation, the results of the tragedy occurred.
1. In the rotation of the bearing when the sound is unknown, not quickly filling grease, but the addition of kerosene, directly from the bearing gap, the seal pulled out, Slewing Bearing directly around the filling, and positive and negative rotation, cleaning, as far as possible The cleaning. At this time the internal groove of the slewing bearing, the ball, the ball will get a slight clean. Wash off the rotating bearing debris, more than anything else.
2. After cleaning the bearings, filling the oil, Slewing Bearing the concentration, that is, the viscosity is slightly higher, this time, the seal has been lost, sticky little better, high adhesion rate.
3. Strengthen the temporary protection, Slewing Bearing to prevent dust, dust, debris into the bearing channel, to ensure that within 2-3 can be reluctant to use.
4. Temporary roller, roller, fast isolation, cage, is basically self-deception, frequent accidents. The reason is that slewing bearings are precision parts, precision, Slewing Bearing installation are carried out in the factory, not a professional manufacturer simply impossible.
The turntable bearing is a kind of large bearing which can bear the special load such as large axial load, radial load and overturning moment, such as integrated load, Slewing Bearing set support, rotation, transmission, fixed and so on. Therefore, in the installation of turntable bearings must do a good job of the relevant inspection work, or installation need to pay attention to matters, for this large bearing, Slewing Bearing we must do a good job maintenance, storage and other work, so as to avoid the following damage to the turntable bearing, Resulting in normal use.
Before the installation of the turntable bearing, the main installation of the host to check, requiring the support should have sufficient strength, Slewing Bearing the connection surface should be machined, the surface smooth without debris and burrs. For the machining can not be achieved to achieve the required flatness, you can use the injection of high strength of the special plastic filler, to ensure the accuracy of the installation plane and to reduce vibration. The turntable bearing has a quencher zone, which is marked "S" on the end of the ferrule, Slewing Bearing which should be installed in a non-load or non-recurrent zone (the plug hole is always soft With the Department).
When mounting the turntable bearings, Slewing Bearing perform radial positioning, tighten the mounting bolts, and check the rotation of the bearings. Slewing Bearing Tighten the bolt should have sufficient preload, the preload should be the bolt material yield limit of 70%. Slewing Bearing Installation of bolts should be equipped with adjustable leveling washers and the use of spring washers.