On
the one-way bearing explanation, in the article "one-way bearing
manufacturers for the description of this bearing," has been described
its design and maintenance of these two aspects of the content, so that
we have this bearing a preliminary Understand. Today also continue to this topic, but the content is different,
one-way bearing maintenance and NSK one-way bearing ring forming method,
the following to one by one to elaborate.
1. One-way bearing maintenance
In general, one-way bearing installation space is subject to certain restrictions, and its type and size of the choice should be based on the bearing diameter to decide.
The allowable rotational speed of the one-way bearing is determined by these factors according to its type, dimensional accuracy, load, lubrication method and cooling method. But we should note that the one-way bearing regardless of whether the quality is good or bad, in the course of its use, it should be overhauled, it mainly includes these steps,
(1) to see the use of one-way bearing outside, whether rusty, and whether there is broken lines, whether the phenomenon of peeling.
(2) whether the abnormal operation of the bearing during the sound, in addition, you can also use the instrument for diagnosis, such as stethoscope, electronic diagnostic instrument.
2.NSK one-way bearing ring forming method
NSK one-way bearing rings forming methods commonly used are the following, as follows:
Forging molding: is through the forging processing, to eliminate the inherent defects in the metal, making the metal distribution is more reasonable, it is mainly used for small products to large products processing, the specific range is 20mm to the outer diameter of 5000mm. Forging forming, including hot forging processing, cold forging and warm forging processing of these three, the current domestic is mainly for hot forging processing, it can be divided into free forging, press forging, forging machine forging and high-speed cold forging machine forging.
Cold rolling forming: is a no-chip processing methods. In theory, the product after cold rolling molding, do not need to turn, you can directly heat treatment and grinding, it is mainly used for small and medium-sized deep groove ball NSK one-way bearing processing. But one thing, cold rolled product, its accuracy will be affected by the accuracy of the equipment and mold forming the impact of these two aspects.
Turning molding: the use of special lathe, the use of centralized process to complete the molding process, but because of this molding method is not easy to adjust the equipment, machine tool accuracy and low utilization of materials, it has not been used, has been eliminated the trend of.