SKF ultra precision bearing cage material and performance

SKF ultra precision bearing retainer materials and performance - 2019 08 - 20 SKF is ultra precision bearings for machine tool spindle and other even at high speed under the extremely high speed requires high precision operation and design of application of each type of bearing has unique features, to make it suitable for specific conditions. Ultra high speed bearing contains types are: 1. Angular contact ball bearing 2. Cylindrical roller bearing 3. Two-way thrust angular contact ball bearing 4. Thrust - The centripetal roller bearing 5. The thrust angular contact ball bearing lead screw drive SKF company provide ultra-precision bearing with retainer, for some special applications, of course, there will be without keep bearing ( Full rolling body) 。 Cage is the main purpose of mixer isolation rolling body, to reduce the pieces bearing friction torque and friction heat to keep rolling body evenly distributed, to optimize the load distribution and the bearing pieces quiet and smooth operation guide of the rolling elements of bearing area, in order to improve rolling body, and to avoid damaging the sliding pieces in the install or remove, when a separable bearing ring removal, keep rolling body cage under mechanical stress produced by friction, strain and inertial force. Also due to high temperature, some lubricants, lubricant additives or by-products of aging, organic solvent or the effect of coolant and degradation. As a result, the design of the cage and materials on the applicability of the rolling bearing under the particular application has an important influence. SKF developed according to different materials for different bearing types and conditions of all kinds of cage. SKF precision bearing retainer materials: : 1, the cotton fiber reinforced phenolic resin is a kind of lightweight materials, cage made of this material can bear large inertia force and up to 120 ℃ ( 250℉） Working temperature, material with lubricant in the bearing of the small capacity. Cotton fiber reinforced phenolic resin is precision angular contact ball bearing cage standard material. 2, nylon 66 ( Polyamide66） : with or without glass fiber reinforced nylon 66 ( PA66） With good strength and flexibility. Because in the lubrication of the steel surface and contact surface has the superior sliding performance is bright and clean, PA66 cage can reduce friction, reduce the friction heat and wear. PA66 to 120 ℃ ( 250℉） The following the working temperature of the application. PA66 is many precision cylindrical roller bearing and thrust angular contact ball bearing cage standard material. 3, polyether ether ketone: glass or carbon fiber reinforced polyether ether ketone ( PEEK) Widely used in high speed, high temperature and corrosion resistance of demanding applications. PEEK under the high speed of maximum temperature limit of 150 ℃ ( 300℉） 。 Temperature of 200 ℃ ( 390℉） , the material did not show the aging sign of caused by temperature or additives. PEEK is some ultra-precision angular contact ball bearing cage standard. 4, brass, brass is not affected by the influence of the most common bearing lubricant, including synthetic lubricating oil and grease, can use ordinary organic solvent cleaning, brass cage working temperature can reach 250 ℃ ( 480℉） 。 Mechanisms in brass cage in a number of precision and ultra precision double row cylindrical roller bearings and two-way thrust angular contact ball bearings in the large and super precision angular contact ball bearing ( d≥ 300毫米) 。 5, other cage materials: SKF ultra-precision bearing in addition to using the above cage materials, in other engineering polymers are used in special applications, light alloy or silver plated steel, etc. Hk united bearing focus bearing industry informationization service nearly 20 years, with many excellent bearing enterprise grows together, also witnessed China's bearing production technology from low to high development process. We will adhere to continue, the steadfast work, don't, don't give up, for the benign development of Chinese bearing industry do render some. Hk united bearing network bearing engineers, 2019. 02. 20