Quality selectives examination: Mechanical foundation component makes a person care

4% with 66.

7% . Selective examination discovery, the scroll bearing life that partial small business produces reachs dependability on the low side, sealed bearing sealing can be not tall, the fat that prevent leakage, dustproof function is poorer. Those who be like 16 batch that are being selectived examination is sealed the product sealing that there are 8 batches in deep trench bearing can be low, the fat that prevent leakage, prevent little function not to accord with a standard to ask, rate of fat of unqualified sample leakage is achieved highestly 34.

45% (standard requirement does not exceed 5% ) ; Standard requirement is dustproof project every are cubic centimeter dirt invades a person to measure bearing of contact deep trench not to exceed 160 thousand, be not bearing of contact deep trench not to exceed 80 thousand, and color of darkly of grease of most unqualified sample, belong to exceed bid badly. In selectiving examination, 3 the biggest companies in industry of our country bearing, limited company of group of bearing of inn of company of Harbin bearing group, tile-roofed house and Luoyang bearing firm, in quality obtained sample in selectiving examination higher level, especially experiment of product life, dependability and sealed function experiment are all and eligible, and each technology index all is achieved or excel state level asks, examine in the convention of scroll bearing project, like dimension precision, rotate to the respect such as precision already was achieved or be close to international the advanced level of congener product. CNC Milling