Publish Time: 2023-01-20 Origin: Site
In addition to the use of turntable bearing in construction machinery, the proportion of turntable bearing in normal use has gradually increased. For example, the mechanical parts of this kind of turntable bearing can also be used in port equipment, metallurgical equipment, large drilling platform and other advanced equipment platforms, At present, this advanced turntable bearing has been widely used to replace the original bearing on mechanical parts.
What are the effects of heat treatment on turntable bearings?
What are the inspection steps for turntable bearing?
What is the root cause of turntable bearing failure?
The processing quality of the turntable bearing itself is greatly affected by the manufacturing accuracy, axial clearance and heat treatment state. The factor that is easily ignored here is the influence of the heat treatment state. Obviously, in order to prevent cracks and depressions on the surface of the raceway, it is required that the surface of the raceway not only has sufficient hardness, but also has sufficient depth of hardened layer and hardness of the core. According to foreign information, the depth of the hardened layer of the raceway should be thickened with the increase of the rolling elements, and the deepest can exceed 6 mm, and the hardness of the core should also be high, so that the raceway will have a higher resistance to crushing. Therefore, the depth of the hardened layer on the surface of the turntable bearing raceway is insufficient, and the hardness of the core is low, which is also one of the reasons for its damage.
1. Before the inspection of the turntable bearing, the operator needs to park the excavator from the construction site to the level ground. It is best to avoid the dust and sand place. The parking posture is that the front-end working device falls on the ground.
2. In order to avoid safety accidents during the detection process, it is necessary to ensure that there are no obstacles, obstructions and idle people around the excavator before the detection, so as to ensure that there are no potential safety hazards during the detection process. 3. Next, the dial indicator frame can be fixed on the lower frame. Note that the dial indicator detection point needs to maintain a distance of about 20mm from the rotary seat ring.
4. Before testing, make sure that the dial indicator is reset to zero, and the stick is fully extended and the bucket is retracted.
5. During the detection process, lower the bucket to the ground and then support the crawler, keep 15-30cm from the ground, observe the dial indicator and record the reading 3 times during the process.
When it comes to the root cause, on the one hand, machine friends overestimated the firmness of the turntable bearing and neglected the observation and inspection of the turntable bearing. When the fault was minor, they did not pay attention to it. On the other hand, the maintenance of the turntable bearing was not done properly!
The turntable bearing has achieved an irreplaceable position in industrial production. LYXQL Slewing Bearing Co., Ltd. founded is committed to providing various welding machines of high quality for all customers from all over the world.
LYXQL Slewing Bearing Co., Ltd. founded in 2003, is the leader manufacturer of large size slewing bearings in China. As one of the national key high-tech enterprises, LYXQL became the GEM listing company successfully on July 13, 2020 (stock code 300850).