The attention of the slim ball bearing problem

slim ball bearing is surface contact, so want to maintain a certain amount of oil film between contact surfaces, so the design should pay attention to the following questions:

1, to the oil film can be smoothly into the friction surface.

2, the oil from the reali slim bearings surface area into the bearing.

3, don't make the whole ring groove in the middle of the bearing.

4, such as oil, juncture place oil groove.

5, to make the oil ring oil fully reliable.

6 don't stuck, gas hole.

7, don't form the oil flow area.

8, prevent to cut off the oil film of sharp edges and sharp edges.

The method of making the mobile crane bearing

Domestic repair welding is commonly used for mobile crane bearing wear, bushings, pitting and other methods, but when the shaft is made of 45 # steel, quenched and tempered treatment, if only by surfacing welding processing, precision spindle bearings can produce welding stress, in the case of heavy load and high speed, can appear the phenomenon of crack and fracture at shoulder, if use the stress relieving, is difficult to operate, and the processing cycle is long, the high cost of maintenance; When the material of shaft for HT200, adopts the cast iron welding is not ideal. Some companies will use a brush plating with higher maintenance technology, laser welding, micro arc cold welding, etc., even the maintenance technology often require high requirement and high fees.

For the above repair technology, enterprises have less common in Europe and the United States, Japan and South Korea, the developed countries generally USES a high polymer composite material technology and nanometer technology, polymer technology can site operation, effectively improve the maintenance efficiency, and reduces the maintenance cost and maintenance intensity.

Single row crossed roller slewing bearing products classification

There are many kinds of Single row crossed roller slewing bearing. (1) can be divided by can withstand the load in the direction of the radial (centripetal) Series radial ball bearings and thrust (axial) sliding bearing.

(2) according to the types of lubricant grease can be divided into oil lubricated bearing, bearing, water lubricated bearing, gas bearings, solid lubrication bearings, magnetic bearings and magnetic bearing seven classes.

(3) according to the lubrication film thickness can be divided into thin film lubrication bearing and thick film lubrication bearing two categories.

(4) according to the bearing shell material can be divided into bronze bearings, bearings, plastic bearings, cast iron jewel bearing, powder metallurgy bearings, self-lubricating bearing, oil bearing, etc.

5. According to the bearing shell structure can be divided into round, elliptical bearing, bearing the three oil bearing, stepped surface bearing, tilting tile bearing and foil bearing, etc.