PRODUCT
Non-standard bearings: release bearing quality assurance
by:Waxing
2020-11-12
SKF hybrid ceramic bearing has the following good properties, make its can be in ultra-high speed precision equipment and frequency conversion motor, popular, low insulation performance.
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CARB bearing inside diameter of the hole has a straight hole and cone hole, straight hole of the bearing can be directly installed on the straight shaft;
Taper hole can hold on the cone shaft bearings, also can with shaft sleeve is installed on the straight shaft.
Reappearance covered surface covered surface traces of the main reason is because of the grinding wheel cutting edge is not sharp, 'eating up' occur when grinding, the vibration is larger.
And has the following features, above circles for leak detection tool, because is very hard to find, so the teacher as much as possible without causing damage to the pipe and other parts of cooling at the same time, the pressure to high.
If using swimming shall fraction of bearing support, just ring inside the bidirectional axial fastening on the shaft, the outer ring relative to the swimming hole axial freedom;
When using internal and external ring can be divided into swimming the centripetal bearing support, the internal and external ring must be two-way axial fastening on the shaft and hole, inner and outer ring of bearing relative axial winding.
To prevent rusting of the bearings and directly with the hand to the bearing, to fully wash hands sweat, and again after coated with high quality mineral oils, especially in the rainy season and summer to pay attention to rust.
Defects, due to the main valve automatically the jamming are not locked, unit caused by overspeed accident: the first is the turbine last stage blade fracture damage, and breakdown of low pressure cylinder for the first time, strong vibration unit, string shaft, shaft stability damage, and damage the generator seal.
Followed by hydrogen gas overflow occurs in the first time and caught fire, and turbine turbine oil ignition and part of the cable;
, instability of shaft system improvement, destroy all bearings, twisting spindle, make each activity turbo-generator set some serious touch grinding, impact, seriously damage the unit.
Compressor is the heart of the refrigeration system, whether working condition of air conditioning, cold storage refrigeration process, chemical industry and so on have compressor is the important link to guarantee!
Refrigeration compressor types and form a lot, according to the principle of partial volume type and velocity type two kinds, including displacement is common.
Fully understand the working conditions of failure bearings, using process and manufacturing quality, etc. , the concrete content includes: the host load, speed, working condition of bearing design working conditions.
Under the effect of axial force, the contact Angle increases, the vibrator is installed, eccentric block and bearing seat fastening bolt at the security guard, daily check the maintenance inconvenience, in fact, under ideal conditions, the so-called bearing life is possible, there was a deflection in the axis, a hood, can automatically adjust load and axial load direction.
Measures: to study conditions of use;
To choose bearing;
Reconsider the clearance;
Check the shaft and bearing box processing precision;
The research around the bearing design;
Check installation method;
Check the lubricant and lubricating method.
Pull catch should be on the inner ring or adjacent components, figure heat remove remove the needle roller bearing or NU, NJ, and NUP type cylindrical roller bearing inner ring, suit to use heat removal methods.
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