the car alternator bearing a series development work

 【China since last June, Morse Group Technology Center technical staff around the car alternator bearing a series development work. As of July 11 this year, completed the automotive OEMs supporting automotive alternator bearing 6202-2RS 6303-2RS and small batch trial work, and conducted experimental verification. www.zcwz.com
As of July 11 this year, Morse Group Technology Center for the development of two models were enhanced automotive generator bearing temperature grease leakage test, strengthen life test, spray test, heating test simulated conditions, starting torque measurement, in which life test 6202-2RS strengthen basic rating life for the traditional life of 49.2 times for the latest ISO281 standard 9.8 times the calculated life ,6202-2RS heating test conditions simulated life 2500h (still running), 6303 -2RS is 1680h (both during the validation test machine), exceeding the host customer requirements 1000h. Also verified during the test conditions simulated test machine performance and carried out continuous improvement. Tests show that the newly developed automobile engine bearings to meet the requirements for use in automotive mainframe customers, the leading domestic level, are long-life, high-quality bearings. Simulation testing machine condition, spray testing machine test equipment to meet the test requirements of taper roller bearing  with the domestic advanced level. www.zcwz.com
Today, the newly developed automobile generator bearing customized private automatic production line has been put in place, is for debugging, is expected to soon can be put into production use.
With the continuous improvement of performance of the car, the car alternator bearing performance also put forward higher requirements. Car Engine bearings with high rotation speed (maximum working speed of over 20000 rpm), variable speed load, high temperature environment, high sealing performance and low start-up and the rotational torque, long life, high reliability requirements. www.zcwz.com
At present, the domestic automobile generator bearing quality levels compared with foreign advanced level in the medium and low, there are major problems, poor sealing performance, product life is low, the reliability is not high, especially when mass production is difficult to meet the high-end customers at home and abroad requirements. Domestic production of such good basic bearing life 8 to 12 million km, individual enterprises can reach 14 to 16 million km, but with first-class foreign mainframe customers 200,000 km above requirements differ greatly, not with internationally renowned Bearing Company competition.
Over the years, Morse Group company although production in the automotive alternator bearing accumulated a lot of valuable experience, but the product still exist, such as sealing performance is unstable, life expectancy is low, not high reliability. Technology Center technicians after careful research and analysis, based on the experience of the original, targeted for the product design and manufacturing process improvements, the processing of the product for an effective process control, using a more reasonable means of inspection, and with reference to well-known companies of the product with the requirements of the experimental design. The main work carried out are described below:
Product design: the use of today's popular internationally renowned bearing ring groove curvature radius of the center of rotation diameter design methods, in order to ensure the same work process bearing radial clearance smaller axial clearance can reduce the noise and machinery functions consumption, reduce the ball and raceway wear and improve bearing operation stability; seal with three lips two chambers, the motion compensation type patent structure, using high temperature resistance, abrasion-resistant rubber seal materials to improve sealing performance to meet life requirements; lubricating materials using the higher cost of automotive alternator bearings for high temperature resistance, long life grease.
Process design and process control: optimizing the process parameters, drawn up to ensure the size and shape of the seal groove processing methods; special heat treatment process to ensure the stability of the tissue material to improve the accuracy of the bearing; implementation of process control to ensure product parts dimensional stability of the processing.
    Measurement and control: As most domestic bearing manufacturers of sealing groove measurement control is not in place, the development of effective control and detection methods to enhance and improve the vehicle processing and heat treatment process quality control; improved feed testing methods for increasing the necessary machining process inspection controls.
Experimental Design: Reference internationally renowned company for automotive alternator bearing test requirements, developed a foundation bearing life test standards, and to consider the actual use of variable speed, variable load conditions of the performance test methods to reasonably and accurately verify product performance. Developed jointly with the Los axis simulation testing machine operating conditions to achieve the automatic heating, load, speed, and unattended, automatic protection. Spray test machine with automatic speed control, multi-angle direction splashes and other functions.