The ultra precision cylindrical roller bearing

Cylindrical roller bearing itself into several categories, a common and ultra-precision cent. Bearings can only carry axial load in one direction, in radial load, will cause additional axial force. And only limit shaft or shell in a direction of the axial displacement. If quality.the installation, make a pair of bearings, namely the outer ring relatively wide wide end, narrow face the narrow end face. So we can avoid cause additional axial force in both directions, but also in the shaft or shell limit axial clearance range. Angle contact ball bearing variant of 70 structure. High precision design radial cylindrical roller bearing is HRB loose north seiko part of ultra-precision series products. Loose north seiko can provide N10 and NN30 all series of high precision, and can also provide products with NNU49 series N19 part of the selected size products. Because when rotating linear expansion can be produced by roller and groove to compensate the float between, so they are ideal floating end bearings. In addition, radial cylindrical roller bearing is also very high radial give sex.

Floating bearing almost only bearings, so the products are widely used for floating bearings. In addition, also for has the following required bearings device: radial stiffness high axial bearing capacity and high precision

In these applications, axial load generally by 2342 series two-way thrust Angle contact ball bearing to bear.

Bearing design

Standard cylindrical roller bearing has preached Erlenmeyer hole () to taper accurately adjust radial clearance. Therefore, the radial clearance or required by radial preloading, the Erlenmeyer spindle axial displacement on adjusted. By the ceramic materials roller mix of ceramic roller bearings is our new product. Adopt ceramic roller bearing in friction and wear performance improved significantly.

Reduce the dosage of lubricant spending, and reduce the temperature. Therefore, can achieve higher preach speed, service life is also significantly longer. Moreover, ceramic roller increases the static and dynamic rigidity, and because of the thermal expansion coefficient is low, eliminates the temperature rises adds preloading. The internal and external circle groove and roller surface quality is very good, HRB cylindrical roller bearing grease is especially suitable for in. Because in bearing with two front-runners, so the distribution of grease raised edge running-in process need to be especially careful handling.

Hypothesis by oil lubrication, need to pay attention to is compared with Angle contact ball bearing, this product need oil lubrication volume is low. Suppose this two types of bearing paratactic assembly together, it must remain independent oil duct, avoid Angle contact ball bearing, the redundant grease injection caused by excessive lubrication, leading to increased sharply bearing temperature.