Each letter of the code name of precision machine tool bearings represents an important parameter. Once the wrong choice is made, the consequences will be disastrous! Among them, the angular contact ball bearing will indicate the contact angle of the steel ball. The common angles are C for 15°, AC for 25°, A for 30°, and B for 40°; in addition, there are 18°, 21° Non-standard angles, the larger the contact angle, the greater the axial force the bearing can bear, which is more suitable for low-speed and heavy-load applications; in the code of precision machine tool bearings, the material of the selected cage is generally indicated, TN Represents nylon cage, M stands for copper frame, J stands for iron frame, and T stands for Bakelite frame; Different cages are suitable for different application scenarios. When choosing, be sure to confirm clearly, otherwise it will not be used; under normal circumstances The structure of precision machine tool bearings can be judged by the bearing code. For example, CTN and ACTN bearings are external guide bearings, which are suitable for high-speed operation. The code contains CTN and ACTN, which means that these bearings are ball guide bearings and are suitable for medium-speed operation. , if such a code is not marked, there is a high probability that it is an internal guidance structure, which is suitable for vulgar operation scenarios; only when the torque is accurate can the rotation be stable! (/jmjczc518.html)
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