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High-speed precision angular contact ball bearings, mainly used for high-speed rotating occasions lighter loads, requiring high precision bearings, high speed, low vibration and low temperature rise a certain life. Often high-speed spindle support member installed in pairs, is the inner surface grinding spindle speed key component parts.
High-speed precision angular contact ball bearings of the main technical indicators:
1, bearing precision index: Over GB/307.1-94 P4 class precision
2, high-speed performance: dmN value 1.3 ~ 1.8x 106 / min
3, long life (average):> 1500 h
High-speed precision angular contact ball bearing service life of a great relationship with the installation, the installation should note the following:
1, bearing installation should be clean, clean room for the bearing to be carefully matching, bearing spacers to go through the grind of maintaining inner and outer ring spacers contour of the premise, the spacer should be controlled in parallel 1um the following;
2, the bearings should be cleaned before installation, cleaning the inner slope upward, feel should be flexible, no sense of stagnation, dried, placed in a predetermined amount grease, oil mist lubrication should be placed in the case of a small amount of oil mist;
3, the bearing should be installed using a special tool, even by force, is strictly prohibited beat;
4, bearing deposit should be clean and ventilated, non-corrosive gases, relative humidity less than 65%, long-term storage should be periodically rust.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7009A NSK | 45 | 75 | 16 |
| 7909C NSK | 45 | 68 | 12 |