The two bearing similar appearance, a lot of users have chosen the wrong!

The two bearing similar appearance, a lot of users have chosen the wrong! 2019 - 06 - 05 schaeffler Germany company production of high precision turntable bearing - joint under load / centripetal thrust bearing and thrust angular contact ball bearing, its shape and wheel bearing looks like Mr. Look at the picture below, can you tell? High precision bearing - joint under load Thrust angular contact ball bearing wheel bearing - Four-point contact ball bearing long a bit like a shape? But the content is completely different, is the use of products in different situations, listen to me carefully said to you. Schaeffler's joint under load and high precision bearing unit has a very high stiffness, bearing capacity and running accuracy, can bear radial load, bidirectional axial load and tilting moment, and there is no clearance. Mainly used in dividing workbench and rotary milling head, milling, grinding, honing head and measuring and test equipment. Schaeffler/centripetal thrust bearing and thrust angular contact ball bearing has the following several kinds of structure: / centripetal thrust bearing - YRT/centripetal thrust bearing - RTC/centripetal thrust bearing - YRTspeed thrust angular contact ball bearings - ZKLDF YRT/centripetal thrust bearing, the RTC and YRTspeed and thrust angular contact ball bearing is high precision bearing out-of-the-box. There is mounting holes on bearing ring, installation is very easy. For the occasion of low speed and short operation such as dividing head and rotary milling head, the most suitable bearing for YRT series; For low friction and high speed, RTC series more appropriate; YRTspeed series is the most suitable for direct drive of the bearing arrangement, and the limit of the bearing rate is very high, and the whole speed range of the friction is low and uniform, suitable and torque motor used together. Thrust angular contact ball bearing ZKLDF especially suitable for high speed running situation for a long time, bearing the overthrow of high rigidity, low friction and lubricant consumption is small. YRT/centripetal thrust bearing, the RTC and YRTspeed bearing with axial component and radial component. Axial parts including a thrust needle or cylindrical roller and cage assembly, an outer ring, a L - Ring and positioning shaft circle; The radial part is full roller ( YRT、RTC） Or preloading of cage guide roller components. ZKLDF thrust angular contact ball bearing has a whole outer ring, double inner ring, double row ball and cage components, contact Angle of 60 & deg; 。 No seal/centripetal thrust bearing, can through the outer ring and L - Ring for lubrication, usually use lithium base composite soap lubricating grease; Both sides of the thrust angular contact ball bearing seal ring, the use of barium compound soap grease lubrication, and can through the outer ring of the lubricating oil lubrication hole fatliquoring. Products can be in - 30 ℃ ~ + 120 ℃ temperature range. Bearing installed through the hole in the related products. Once the bearing installation and bolted, bearing the radial and axial preloading. Between the shaft and bearing temperature difference will affect the bearing radial load, thus affect the operating performance of a bearing. If the temperature is higher than the temperature of the bearing axis, radial preloading will increase in proportion, thus causes a rolling element load increases, bearing friction increases bearing temperature rise; If the temperature lower than the temperature of the bearing axis, radial is proportional to the decrease of preloading and the bearing clearance increases, decrease the stiffness of the bearing and the wear increases. Schaeffler company/centripetal thrust bearing and thrust angular contact ball bearing is actually used on precision machinery bearing, and wheel bearings are essentially different; Size section is better than a wheel bearing narrow range, the product's type is also only a few, much less than the wheel bearing model. Don't choose schaeffler/centripetal thrust bearing and thrust angular contact ball bearing to replace the wheel bearings, in that case, really beat the mosquitoes - with anti-aircraft guns Overqualified. If it is met local tyrants to the precision of the product used in general machinery on the slewing mechanism of can only ha ha say: you too have money! ！ ！ Hk united bearing network bearing engineers, 2018. 12. 5