Bearing requirements for steel

Source: China Bearing Network Time: 2018-07-16

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

First, touch the fatigue strength of the bearing under the effect of periodic load; touch the appearance is easy to suffer fatigue damage; that is, the crack is off; this is the primary damage of the bearing. Therefore; in order to improve the service life of the bearing; bearing steel is necessary to have very High touch fatigue strength.
Second, the wear-resistant function of the bearing operation; not only tumbling friction between the ferrule, the rolling body and the support frame; and also the sliding friction; thus the bearing parts are constantly worn. In order to reduce the wear of the bearing parts; adhere to the bearing accuracy and stability Sexuality; extended service life; bearing steel should have good wear resistance.
Third, hardness and hardness is one of the important qualities of bearing quality; it has a direct impact on the fatigue strength, wear resistance and elastic limit of the touch. The hardness of the bearing steel in the application state usually reaches HRC61~65; High touch fatigue strength and wear resistance.
Fourth, anti-rust function In order to avoid the corrosion and rust of bearing parts and products during processing, storage and application; the demand bearing steel should have outstanding anti-rust function.
5. Processing function The bearing parts are in the production process; many pass cold and hot processing steps are required; in order to satisfy the demand of large quantities, high efficiency and high quality; the bearing steel should have outstanding processing functions. For example; cold and hot forming functions ; cutting processing function; hardenability and so on.
In addition to the above basic requirements, bearing steel should also reach the requirements of proper chemical composition, uniform internal arrangement, less non-metallic inclusions, internal and external defects, and the appearance of decarburization layers not exceeding the regular concentration; these items are in the original data specifications. Clear rules.
Commonly used materials for bearing parts are: high carbon chromium bearing steel, carburized steel (such as 20Cr2Ni4A, 15Mn, 20Cr2MnMoA), high temperature bearing steel (such as Cr4Mo4V, Cr14Mo4, Cr15Mo4V, W18Cr4V), stainless bearing steel (9Cr18, 9Cr18Mo, 1Cr18Ni9Ti) , vacuum degassing steel, anti-magnetic bearing steel, etc.; the most commonly used is high carbon chromium bearing steel. The basic steel grade of high carbon chromium bearing steel is GCr6, GCr9, GCr9SiMn, GCr15, GCr15SiMn; it is used in China's bearing manufacturing industry. The widest and most used steel grade; with outstanding wear resistance and touch fatigue function; has more ambitious processing functions; has certain elasticity and tolerance.

Recommend to friends comments close window

Bearing related knowledge

Which sliding bearing data can be avoided?
Repair Analysis of Flywheel and Crankshaft Bearings Bearings Interference Cooperation Details on the Lifetime of Bearings After Heat Treatment

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

Previous:Analysis-Guidelines and Data for Bearing Packaging Next:Support Frames and Other Parts Information in Imported Bearings

Medium Grain Graphite

Graphite Molds,High Purity Graphite,Medium Grain Graphite,High Strength Graphite Block

Henan Carbons New Material Technology Co., Ltd. , https://www.hncarbons.com