6 methods to distinguish the false bearings

Bearing is an important part in mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient during its motion, and ensure its rotation accuracy. In production and processing, once fake bearings are used, the consequences are not only machine maintenance and even downtime, but also millions of losses for the company. Today I will share 6 methods to distinguish the false bearings.

1. Check the logo and characteristic on the package is clear or not. 
2. Check certificate of quality is standard or not. 
3. Check whether the steel print on the bearing is clear or not.
4. Check the overall quality of bearings.
5. Check the metallic luster of bearings.
6. Rotate the bearings to check whether there is noise or not. 

Chinese companies reporter Carter Eaton parts giant merger is intended to keep a close

2013 machine tool industry will be an important opportunity for growth or for industrial transformation and upgrading of the main points of the Platform for enterprise industrial base next five years is the development of remanufacturing industry, nuclear power China Nuclear high precision bearings Power Company Electric rapid development of nuclear power industry giants will share trillion feast Audi Volkswagen plant in North America Audi car repairer recognized in North America to build engine plant plans to consider TD-SCDMA Taiwan NT OEM 2010 Q3 units over the same period a slight growth of the semiconductor industry SAT SAT target 4.1% tax periods: "Twelve Five" tax to maintain sustained growth mold precision plastic mold parts rapid development of China's plastic mold industry increasingly large Chinese Bearing manufacturing machine companies reporter Carter Eaton parts giant merger is intended to keep a close eye beautiful new generation of Asia-Pacific market ships ideal type of ship electrical wiring four advantages terminal control system aerospace aerospace Executive Vice President and Secretary General of China Machine Tool Industry Association, said Wang Liming, on the 6th, 2013 is expected to total industrial output value of China's machine tool industry will maintain a growth rate of over 10%.hydraulic device system material successfully developed special hydraulic machine

taper roller bearing so that the entire domestic construction machinery industry to recover

Proposed two sessions related to economic growth targets , infrastructure around the city began to actively start including road , rail, water , ports, airports and other major urban projects . Carry out large-scale projects , so that the entire domestic Bearing manufacturing machine construction machinery industry to recover, demand for construction machinery relatively strong , while increasing market demand for bearing a certain extent .
Bearing rising production plan
From the data , the current domestic marine ships, automobiles , oil pipelines and so on industry production plans to maintain a certain stability. And bearing a slight increase in construction taper roller bearing  machinery industry production plans. With the recovery of the construction machinery industry will contribute significantly to the demand for bearings , bearing industry will develop further. Most of the bearing steel enterprises to maintain good sales in March , sales growth could help stabilize the entire bearing steel market , promote the rapid development of bearing steel companies.
Growth in demand for high-end bearings
The current stable development of China's bearing manufacturing industry , market demand for high-end bearing is growing, such as machine tool bearings , aerospace bearings, high-speed precision bearings, wind power bearings, rolling bearings , high-speed rail bearings, turbocharger bearings , and so on .

Rolling in the manufacture of the contract is required clearance

Tapered roller bearing type code 30000 , tapered roller bearings for the separation of bearings . Under normal circumstances, especially in the inner cone GB/T307.1- " Rolling bearings tolerance " involved in the size range of roller bearings are one hundred percent can be used interchangeably in common between the outer and inner components . The angle of the outer ring raceway and the outer diameter has been standardized Bearing manufacturing machine with the same dimensions provides . When allowed to change in design and manufacturing . Between the tapered roller bearings to cause the outer and inner components can be interchanged in common worldwide .
Tapered roller bearings are mainly used to bear radial load mainly radial and axial load . Compared with angular contact ball bearings , bearing capacity, low speed limits . Tapered roller bearings can withstand axial load in one direction a direction to limit the axial displacement of the shaft or housing .
Dynamic bearing from manufacturing to installation and then use its clearance what changes
Rolling in the manufacture of the contract is required clearance
this clearance is generally referred to as the original clearance ; while the bearing is installed on the host , because a ferrule has an interference fit , resulting in reduced high speed bearing clearance values this clearance is formed after the installation is called installation clearance ; after running, bearing parts temperature, volume changes, because the bearing shaft or housing to match the temperature increases also occurred in the age of elongation phenomenon, which lead to recurrence of the bearing clearance changes , this work is called up clearance clearance work . Generally, it is less than the installed operating clearance clearance, sometimes also with the clearance values ​​group with different installation methods increases.
The method of running track and applied load