Bearing type "detailed analysis"

Source: China Bearing Network Time: 2013-07-06

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

1. Dynamic pressure bearing: Dynamic pressure bearing is a new type of multi-oil wedge oil film bearing that summarizes the strength of dynamic pressure bearing and hydrostatic bearing. It avoids the severe heat of static pressure bearing and the large and disorderly oil supply system, and overcomes the dynamic pressure. The shortcomings of the dry conflict that may occur when the bearing is started and stopped, have a good high-speed function, and the speed regulation is wide, the layout is compact, the dynamic and static stiffness are high, but the price is high, the protection is messy, and the standardization is low. , use less in the super high speed spindle unit.
2, magnetic bearing: magnetic floating bearing is the use of multiple pairs of 180 Â° controllable electromagnets on the circumference of the opposite direction of the suction force, the spindle suspension bearing temperature rise characteristic use grease smooth minimum high without smooth equipment, sealing simple, cooling Poor function. Suitable for low-speed oil mist smoother, higher dust and cutting fluid are not easy to invade, pollute the environment, low cost. Rarely choose oil and gas smooth, generally low dust and cutting fluid are not easy to invade, no pollution, can reach the minimum oil quantity smooth, High cost. Widely used spray gliding height, low dust and cutting fluid are not easy to invade, requiring large amount of oil, high conflicting loss, easy to leak oil, high cost, not used for vertical spindle. Special occasion ring smooth high and lowest smooth A new high-performance bearing with no mechanical contact between the journal and the bearing, which is used in space and spindle layout. Because there is no mechanical touch, the shaft can reach extremely high reversal accuracy, high speed and Larger power, together with low temperature rise, no need for smoothness, no oil pollution, long life and other advantages. Because the axis of the magnetic bearing is placed through the electronic reaction control system for active Therefore, the spindle stiffness and damping are adjustable, and the dynamic balance can be actively balanced, so that the oscillation is reduced to a low level, so that the noise is small. Because the magnetic bearing is expensive and the control system is disordered, it has not been widely implemented on the high-speed spindle unit for a long time. , now has a sophisticated product supply, with great development prospects.
3. Ceramic bearing: Because the ball bearing is in the process of running, the ball has both rotation and revolution, centrifugal force and gyro moment will occur.
Following the progress of the bearing speed, the ball will have a large centrifugal force and gyro moment, which will cause great contact stress on the bearing, increase the temperature rise and wear of the bearing, and reduce the service life of the bearing. In order to reduce the centrifugal force and the gyro moment, according to the above two formulas Generally, the ball diameter is reduced and the lightweight material is used to make the ball. The reduction of the ball diameter will reduce the bearing rigidity, and the layout method is disordered. Now the silicon nitride ceramic material is used to replace the rolling bearing of the rolling bearing. It is called ceramic bearing. Compared with steel ball, ceramic ball has many advantages: light weight and low data density. Because ceramic bearing uses small diameter bead fine steel bearing layout method and scale series, together with its simple layout and cost Low, high rigidity, high speed, and convenient protection. Hybrid ceramic ball rolling bearings are widely used as support methods at home and abroad. At the time or for a long period of time, it is still the preferred spindle component of the electric spindle.

Recommend to friends comments close window

Bearing related knowledge

Huifeng frequency converter in the bearing processing profession using traction motor axle bearing several commonly used bearing types (two)
Listening to the sound of the bearing in the work

This article links to http://
Please indicate the bearing network http://

Previous:The "damage explanation" of diesel engine bearings in operation
Next: A new shaft core and bushing dedicated to the top roller

The Pipe Anticorrosion Materials is a multilayer system used for the protection of steel pipelines. Liquid Adhesives can be used as primers for this system.In addition to serving as primers, these liquidadhesives themselves represent an anticorrosion layer and provide a uniformly smooth contact surface to promote high adhesion of the coating system to the pipe. They are designed for machine or brush application and formulated with stress-corrosion cracking inhibitors. The Anti-Corrosion layer0 is engineered to assure a high bond to the primed surface with excellent conformability characteristics. The mechanical protection layer ,achieves a complete bond to the inner layer, providing maximum handling and in-service protection for the coating system. The adhesives in these and all POLYKEN tape systems contain proven anti-microbial additives.

Inner Wrap Tape

Outer Wrap Tape

Pipe Anticorrosion Materials

Pipe Anti Corrosion Materials,Anti-Corrosion Pipe Repair Tape,Anticorrosion Pipe Wrap Tape,Gas Pipe Tape

Jining Qiangke Pipe Anticorrosion Materials CO.,Ltd , http://www.pipe-wrap-tape.com