"Zhangzhou KOYO bearings agents" (Japan IKO bearings distributor) 
 "Zhangzhou KOYO bearings agents" (Japan IKO bearings distributor) 
 Installed correctly precision INA Bearing 
 Precision INA bearings is installed, install them is over to pay attention to some things, if not installed and make the bearing life is not long. So, we need to install the INA Bearing, then you should understand the method of installing the bearing, so as to ensure that INA Bearing damaged during the installation process. Below to introduce the bearing mounting accuracy calibration method: 
 Measurement axis and INA bearing hole size to determine with precision bearings, with the following requirements, 
 (1) The inner ring and the shaft to take the interference with the amount of interference the 0 ~~ +4 μm (light load, high-precision, 0); 
 (2) the outer ring and the bearing hole to take the gap with the gap amount ~~ +6 μm (but in the free end of INA bearings angular contact ball bearings, can also increase the gap); 
 (3) axis with the bore surface roundness error in the 2μm 
 (4) INA Bearing spacer end face parallelism in 2μm 
 (5) face the external face of the shaft shoulder beating in the 2μm 
 (6) INA bearing hole block shoulder axis beating the 4μm 
 (7) Spindle cover the inner end face of the axis of the beating of 4μm 
 TIMKEN imports bearing metamorphic layer formed by the grinding force 
 In the grinding process, the surface layer will be the cutting force of the wheel, the role of compression and friction. In particular, the role of the latter two, the surface layer to form a directional strong plastic deformation layer and the hardening layer. These metamorphic layer will inevitably affect the changes in the surface layer of residual stress. 
 "Zhangzhou KOYO bearings agents" (Japan IKO bearings distributor) 
 (1) cold plastic deformation layer 
 In the grinding process, every moment of the abrasive is equivalent to a cutting edge. However, in many cases, the cutting edge of the rake angle is negative, the particle in addition to the cutting action is to make the workpiece surface to withstand compression (plows role), so that the workpiece surface to leave a significant plastic deformation layer. The degree of deformation of the deformation layer increasing with the increase of blunt grinding wheel and grinding of feed. 
 (2) thermoplastic deformation (or high temperature deformation) layer 
 Instantaneous temperature of the grinding heat in the work surface, so that a certain depth of the surface layer of the elastic limit of a sharp decline, even to the disappearance of the degree of flexibility. The work surface layer in grinding force, especially the role of compression and friction, causing the free extension by the limitations of the base metal surface compression (more plow), caused by plastic deformation in the surface layer. The high-temperature plastic deformation in the case of constant grinding process, with the workpiece surface temperature increases. 
 "Zhangzhou KOYO bearings agents" (Japan IKO bearings distributor) 
 (3) hardening layer 
 Sometimes can be found using the microhardness method and metallographic method, due to the processing distortion caused by the surface layer hardness increased. 
 In addition to grinding, casting and heat treatment of heating caused by the surface decarburized layer, and then after the processing has not been fully place remains in the workpiece surface will also cause the surface to soften the deterioration contributed to the early failure of bearings. 
 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 



 54 311 58 311 - 54 311 54311 - 55 * 45 * 105 * 72.6 * 105 thrust ball bearings 
 54312 583,125,431,254,312 54312 - 60 * 50 * 110 * 70.7 * 110 thrust ball bearings 
 54313 58313 - 54 313 54 313 - 65 * 55 * 115 * 71.9 * 115 thrust ball bearings 
 - 54 314, 54 314 58314 54314 - 70 * 55 * 125 * 80.3 * 125 thrust ball bearings 
 54315 58315 - 54 315 54315 - 75 * 60 * 135 * 87.2 * 135 thrust ball bearings 
 543,165,831,654,316 54316 54316 - 80 * 65 * 140 * 86.1 * 140 thrust ball bearings 
 543,175,831,754,317 54317 54 317 - 85 * 70 * 150 * 95.2 * 150 thrust ball bearings 
 54 318 58318 - 54318 54 318 - 90 * 75 * 155 * 97.1 * 155 thrust ball bearings 
 54320 58320 - 54.32 thousand 54 320 - 100 * 85 * 170 * 105.4 * 170 thrust ball bearings 
 - 54322X, 54322 58 322 54 322 - 110 * 95 * 190 * 118.4 * 189.5 thrust ball bearings 
 - 54324X, 54324 58 324 54 324 - 120 * 100 * 210 * 131.2 * 209.5 thrust ball bearings 
 54405 58405 - 54405 54 405 - 25 * 15 * 60 * 49.7 * 60 thrust ball bearings 

 "Zhangzhou KOYO bearings agents" (Japan IKO bearings distributor)