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Rolling sound and control the impact of the larger models of ball bearings or angular contact ball bearings in the pure radial load, low speed, the centrifugal force due to rolling body is small, in a non-load zone of rolling element cage will impact or raceway and noisy. However, as the speed increased, the sound will disappear. Impact on the rolling sound control methods are: appropriate to reduce the radial clearance, the use of reasonable structure supple material of the cage FAG bearings.
First, the structural design is reasonable, while there have advanced, will have a longer bearing life. FAG Bearings are generally manufactured through forging, heat treatment, turning, grinding and assembly of multi-channel processing. The reasonableness of the processing technology, advanced, will also affect the stability of angular contact ball bearing life. Which affect the quality of the finished bearing heat treatment and grinding processes, often with bearing failure have a more direct relationship. In recent years, the working surface of the bearing metamorphic layer studies show that the quality of the grinding process and is closely related to the bearing surface.
1 foot race detection method
For larger diameter bearing, a larger gap to narrow feeler with direct detection. For the smaller diameter of the bearing, the gap is small, inconvenient with a feeler, but bearing backlash, we must use the proper thickness feeler.
2, the pressure of lead detection method
Lead was detected with the pressure FAG bearing clearance with a feeler than the detection accuracy, but more trouble. Should be used for detecting soft aluminum wire, the diameter should not be too large or too small, and most preferably a diameter of 1.5 to 2 times the gap, the actual work is usually detected with a soft wire.
Detection, the first angular contact ball bearings lid open, the choice of appropriate diameter lead wire, be cut into 15 to 40 mm long pieces, placed on the upper and lower bearing journal at the interface, cover bearing cover, according to the specified torque Tighten the bolts, then loosen the bolts, remove the bearing cap, with a micrometer detection flattened lead wire thickness, calculated bearing tip clearance averages.
If the top clearance is too small, to the upper and lower surface of the tile with padded. If too large, cut mats, scraping or re-poured watts.
Bearing clamping force adjustment: To prevent bearing may occur in the course of the rotation and axial movement, in addition to interference with the stopper part, the bearing has a bearing cap to be pressed, the tip clearance measuring method the same way as with the measured , measure the thickness of soft wire, the clamping force can be used to calculate the bearing (bearing compressed with elastic deformation expressed) Average pad pressing force of 0.02 to 0.04 mm. If the clamping force does not meet the standard, you can increase or decrease in angular contact ball bearings and bearing joints at ways to adjust the thickness of the gasket, tile back padded allowed.
The main task of bearing failure analysis is based on a lot of background material, analysis of data and failure modes, find the cause of failure of the main factors FAG bearings, in order to have targeted improvements to extend bearing service period, to avoid angular contact ball bearings sudden occurrence of early failure.
Bearing materials metallurgical quality FAG Bearing influence early failure of the main factors. As metallurgical techniques (such as bearing steel vacuum degassing, etc.) progress, improve the quality of raw materials. Raw material quality factors in bearing failure analysis in the proportion has decreased significantly, but it is still imported bearing failure of the main factors. Appropriateness of the selection is still the angular contact ball bearing failure analysis must be considered.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 31330XU NTN | 150 | 320 | 75 |
| 4T-M12649/M12610 NTN | 21.43 | 50.005 | 18.288 |