ntn bearing forging casting methods and technical specifications
ntn Bearing Forging: Forging Machinery imports of bearings used to exert pressure on the metal blank to produce plastic deformation in order to obtain a certain mechanical properties, a certain shape and size of forging processing methods.
ntn bearing cast: a metal smelting meet certain requirements into a liquid and poured into the mold, the solidification by cooling, the Qing had to be scheduled after the whole deal with the shape, size and performance of castings (parts or blank) in process.
ntn bearings in high-speed precision angular contact ball bearings, mainly used for lighter loads, high-speed rotation occasion to require high-precision bearings, high-speed, low vibration and certain low temperature l life. Often for high-speed electric spindle bearing parts installed in pairs to use, the inner surface grinder is the key to supporting high-speed electric spindle parts.
Main technical indicators:
1.ntn bearing precision index: More than GB/307.1-94 P4-level accuracy
2. High-speed performance: dmN value of 1.3 ~ 1.8x 106 / min
3. Life (average):> 1500 h
High-speed precision angular contact ball bearings and installation of life has a lot to be aware of the following items:
1. Bearing installed should be clean, clean room within the bearing to go through carefully matching, bearing ring to go through with every other ground, while maintaining high inside and outside the ring ring compartment under the premise of parallelism across loop should be controlled in 1um less;
2. Ntn bearings should be cleaned prior to installation, cleaning the inner slope upward, feel should be flexible, without a sense of stagnation, after drying, into the provisions of the amount of fat, in the case of oil mist should be placed in a small amount of oil mist lubrication oil;
3. Ntn bearing should use special tools to install by force uniform, non-beat;
4. Ntn bearing deposit should be clean ventilation, no corrosive gas, relative humidity of no more than 65%, long-term storage should be periodically rust.
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