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   Needle roller Shanghai 7215C / DT bearing NSK Size Chart
[7215C / DT bearing】 Size Specifications:
Bearing Model: 7215C / DT bearing
Inner diameter: 75mm
Outer diameter: 130mm
Thickness: 50mm
Bearing series: angular contact ball bearings
Bearing Brand: NSK Bearings
Spot supply of imported INA bearings
   High-speed precision angular contact ball bearings, mainly for high-speed rotating light load situations requiring high precision bearings, high speed, low vibration, low temperature rise and a certain life. Often high-speed spindle bearing installed in pairs, is the inner surface of the high-speed spindle grinder key component parts. Main Specifications:
   1. Bearing precision index: more than GB / 307.1-94 P4 level precision
   2. High-speed performance: dmN value of 1.3 ~ 1.8x 106 / min
   3. life (average):> 1500 h
   High-speed precision angular contact ball bearing life of a great relationship with the installation, you should note the following
   1. Bearing installation should be in clean, clean a room, to go through carefully matching bearing, bearing spacer to go through the grind, while maintaining the inner and outer ring spacers high premise spacer parallelism should be controlled in 1um the following;
   2. The bearings should be cleaned before installation clean, cleaning the inner slope upward, feel should be flexible, no sense of stagnation, dried, placed in a predetermined amount of fat, in the case of oil mist lubrication should be placed in a small amount of oil mist;
   3. Bearing installation should use special tools, even by force, non-beat;
   4. Bearing storage should be clean and ventilated, non-corrosive gases, relative humidity less than 65%, long-term storage should be regularly rust.
   NSK Bearing tolerance class
    P0 (omitted) - tolerance levels comply with JIS standards for 0.
    P6-- tolerance levels comply with JIS standards for six.
    P6X-- tolerance levels comply with JIS standards for class 6X.
    P5-- tolerance class in accordance with 5 JIS standards.
    P4-- tolerance class in accordance with 4 JIS standards.
    P2-- tolerance levels comply with JIS standards for two.
   NSK Bearings special specifications
    X26-- use temperature limit of 150 degrees Celsius.
    X28-- temperature limit of 200 degrees Celsius
    X29-- use temperature is limited to 250 degrees Celsius.
    S11-- aligning roller bearings, temperature limit of 200 degrees Celsius
   We recommend the following models: 6910NK bearings NJ414 bearing YEL206-2F bearing BR648032 bearing 7317CDT bearings 54211 + U211 bearing NUKRE80 bearing POS3EC bearing NK37 / 20A Bearings 60002RS bearing 7215C / DT bearing
   I also recommend you 7215C / DT bearing purposes: cold heading machine, grinding machine, die-casting machines, conveyors, flame arrester, screening equipment, condensers, dispensing equipment, packed tower, car muffler, and other purposes.