Q1:How Is The Rolling Element Of The Rolling Bearing Made

A:The rolling elements of rolling bearings mainly include steel balls and rollers. Their processing and manufacturing process is briefly as follows:

1. The processing process of steel ball, the processing of steel ball also varies according to the state of raw materials, among which the process before cutting or polishing the ball can be divided into the following three kinds, the process before heat treatment can be divided into the following two kinds, the whole processing process is: Bar or wire cold blunt (some bar after cold blunt still need band and annealing), sharp cutting, coarse grinding, hard or soft grinding ball – heat treatment – grinding, fine grinding, lapping and grinding – final inspection group – rust, packaging, warehousing.
2. Roller processing process Roller processing varies according to the different raw materials, among which the process before heat treatment can be divided into the following two kinds, the whole processing process is: Rod furnace processing or wire cold heading after string band and soft grinding, heat treatment, series of soft point, coarse grinding, coarse grinding diameter end – the end face grinding, fine grinding diameter – end mill diameter – final inspection group – rust, packaging, warehousing

Q2:What Type Of Cylindrical Roller Bearing Is Suitable For Use In What Place?

A:Cylindrical roller bearings belong to 2 types of bearings, mainly used in large and medium-sized electric motors, rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, reducers, rolling mills, vibrating screens and lifting and transportation machinery, etc.

Q3:What Is The Difference Between Overrunning Clutch And One-Way Bearing

A:The principle of overtaking clutch and one-way bearing is basically the same, but the overtaking clutch has one more function than the one-way bearing: overtaking. That is, when the speed of the active end is greater than the speed of the driven end, the drive will be exceeded when the driven end is greater than the active end. In addition, most overrunning clutches have a one-way reverse stop function, while all one-way bearings only have this function.

Q4:Application Of Self-lubricating Bearing In Casting

A:Self-lubricating bearings have wide service temperature, sufficient solid lubricating material content, uniform release, good self-lubricating performance and bite, which can effectively protect the shaft journal and achieve lasting use purposes. It is suitable for operation in high temperature, low speed, heavy load, heavy dust, water shower and impact vibration environment. It can be widely used in rolling and sliding bearing parts of mining machinery, metallurgy, petroleum, chemical industry, food, textile, papermaking, printing and dyeing machinery and equipment.

Q5:What Is The General Fit Between The Inner And Outer Ring Of Bearings And The Shaft

A:It is generally an interference fit.
According to the direction and nature of the load acting on the bearing and which side of the inner and outer ring rotation, the load borne by each ring can be divided into rotating load, static load or non-directional load. The ferring bearing rotating load and non-directional load should be static fit (interference fit), and the ferring bearing static load can be transitional fit or dynamic fit (gap fit).
When bearing load is large or bearing vibration and impact load, its interference must increase. When using hollow shaft, thin-wall bearing box or light alloy, plastic bearing box, also must increase the amount of interference.
When high rotation is required, high-precision bearings should be used, and the dimensional accuracy of shaft and bearing box should be improved to avoid excessive interference. If the interference is too large, the geometry accuracy of the shaft or bearing box may affect the geometry of the bearing ring, thus impairing the rotation accuracy of the bearing.
Non-separation type bearing (such as deep groove ball bearing) inner and outer ring are static fit, bearing installation, disassembly is extremely inconvenient, it is best to use a dynamic fit of one side of the inner and outer ring.

Q6:What Are The Bearing Dust Cover Materials

A:Bearing dust cover materials are iron, rubber coated iron, stainless steel plate, but the most commonly used or spcc cold plate.
SPCC was originally the Japanese standard (JIS) for the general use of cold rolled carbon steel sheet and steel strip name, now many countries or enterprises directly used to represent their own production of similar steel (such as Baosteel Q/BQB402 standard SPCC). Chemical composition of SPCC Table C: ≤0.10 Si: ≤0.05 Mn: ≤0.50 P: ≤0.035 S: ≤0.025