NTN Bearing, Shenzhen, authorized dealers (NACHI bearing distributors) 
 NTN Bearing, Shenzhen, authorized dealers (NACHI bearing distributors) 
 Pre-load adjustment 
 Empty running test. Angular contact ball bearings by the assembly inspection after passing to the speed of the work for empty running test, no less than 2h, the temperature rise should be no more than 15 ℃. 
 (1) the installation of thrust ball bearings 
 Axis circle and the axis of the use of transition with the seat ring and the shaft to use more dynamic with, and often mounted in pairs. Installation, attention should be paid to test the verticality of the axial clearance, and together with the shaft rotating shaft ring and shaft centerline. 
 (2) installation of tapered bore bearings 
 NTN Bearing, Shenzhen, authorized dealers (NACHI bearing distributors) 
 Tapered bore bearing more than the inner diameter was tapered hole aligning ball bearings, cylindrical roller bearings and spherical roller bearings. This type of bearing can be installed directly on the taper of the journal, you can also use the cone of the adapter sleeve or withdrawal sleeve installed in the cylindrical journal. 
 Bearing with tapered bore requirements, are generally more closely. Are required to measure the bearing radial clearance after installation clothes. Because with the tightness is not decided by the journal tolerance, but according to the installation of the bearing pressure into the cone with the bearing radial clearance reduction is to determine the distance of the surface pressure into the distance the greater the diameter to clearance reduction is more and more, bearing with the increasingly close; the contrary, the distance the smaller the pressure into the radial clearance decreases the amount of the less bearings with it loose. It can be seen that the tapered bore bearings with tightness entirely on the radial clearance in the front and rear bearing installation reducing the amount of guarantee. 
 In order to ensure the quality of the installation of tapered bore bearings, Here are some excerpts part of the former Soviet Union-aligning ball bearings allow to reduce the amount of the original radial clearance (Table 2-5), and Germany's FAG provisions tapered bore cylindrical roller bearing radial clearance decreases (Table 2-6), and the conical bore self-aligning roller bearings radial clearance decreases (Table 2-7) are available for measuring the radial direction before and after the installation of tapered bore bearings reference clearance. When in use, generally not exceeding the values ??in the table. 
 Radial clearance of measurement methods. Inseparable-aligning ball, spherical roller bearings plug relic measuring feeler aligning roller bearings, to ensure two of the inner raceway relative to speech generated for the outer ring is not tilted, should be were measured in two roller Department. For small-aligning roller bearings, radial clearance is very small, not a feeler gauge can be used to measure the axial displacement of the bearing cone instead of the (axial displacement values ??are shown in Table 2-6, Table 2 - 7). If the axial displacement can not be measured, the bearings should be installed bearing shell, and then pressed into the bearing hole. Pressed into the hand struck, should make the outer ring of a smooth rotation. Separable cylindrical roller bearing radial clearance, use outside micrometer measurement, which uses the expansion after the measurement of the inner ring mounted in the journal instead. 
 NTN Bearing, Shenzhen, authorized dealers (NACHI bearing distributors) 
 Table 2-5 aligning ball bearing original radial clearance to allow reductions (excerpt) in mm 
 Table 2-6 in mm tapered bore cylindrical roller bearing radial clearance to reduce the amount of (excerpt) 
 Should be noted here that the requirements for the installation of substandard or reinstall after the demolition of bearing, radial clearance a small amount of axial displacement or the amount of inner expansion must be re-determination. 
 Tianjin imported bearings Sales Co., Ltd. for many years to: SKF import bearing, NSK bearing NTN imported bearings, NACHI imported bearings, KOYO, imported bearings of FAG import bearing, INA imported bearings, TIMKEN imported bearings and other well-known imported bearings sales. 
 The products involved: deep groove ball bearings, cylindrical roller bearings, tapered roller bearings, aligning ball bearings, spherical roller bearings, needle roller bearings, angular contact ball bearings, thrust ball bearings, thrust roller bearings, bearing joints, spherical bearings, linear guide series. 
 Applicable industries: iron and steel metallurgy, port machinery, petrochemical, automobile manufacturing, machine tools and paper industry. 
 Sales all over Guangdong, Guangzhou, Dongguan, Foshan, Chengdu, Shenzhen, Zhongshan, Zhuhai, Wuhan, Shenyang, Taiyuan, Urumqi across the country. 
 Relying on the coastal geographical advantage of Tianjin Port, with the price advantage and quality advantage of the company's products, has developed into a considerable scale bearing trade company. Has its own bonded warehouse in Tianjin Port also won the trust of our customers and support. 
 Tel) 86-022-87887680 (Gujing Li) 
 QQ 1945759772 
 Web site: http://www.sjrxzc.com 



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 NTN Bearing, Shenzhen, authorized dealers (NACHI bearing distributors)