Boost Your Bottom Line: Unveiling the Benefits of High-Quality Conveyor Idlers

Conveyor idlers are important components in coal mine conveyor systems, and their manufacturing quality and performance directly affect the efficiency and safety of the system's operation. This article provides a detailed introduction to the manufacturing quality and performance of conveyor idlers, as well as inspection methods, with the aim of improving the manufacturing level and effectiveness of conveyor idlers, ensuring the safety and high efficiency of coal mine production.

Although the structure of conveyor idlers is relatively simple, the quality of manufacturing has a great impact on the rotational resistance and service life of the idlers. The main factors that affect the rotational resistance of conveyor idlers are the clearance, sealing, and lubricant of the bearing and sealing system. The rotational resistance of labyrinth-sealed conveyor idlers increases exponentially at low temperatures. In addition to selecting for resistance, the quality of the following factors should also be ensured:

1. The welds between the idler bearing seat and the roller body must not be damaged or cracked.
2. After the drop test, the axial displacement of the conveyor idler must not be greater than 1.5mm; the rotational resistance of the conveyor idler must not exceed 1.5 times the specified value, and the idler body must not loosen from the bearing seat.
3. Axial load test. A 10 kN axial load should be applied to conveyor idlers with a diameter of 89-108 mm, and a 15 kN axial load should be applied to conveyor idlers with a diameter of 133-159 mm. The seal between the conveyor idler shaft and the bearing seat must not detach from the idler body.
4. Coal dust sealing performance: Place the conveyor idler in a coal dust sealing container according to regulations, and rotate it at 1,450 r/min for 200 hours. The amount of coal dust entering the bearing lubricating grease must not exceed 0.8%, and the conveyor idler must still be able to operate normally.
5. Immersion sealing performance: Place the conveyor idler in clean water and run it at 1,450 r/min for 24 hours. The amount of water entering the idler must not exceed 150 g.
6. Water spray sealing performance: Place the conveyor idler in a tilted sealing container with the upper end entering water and the lower end draining water, and run it at 1,450 r/min for 120 hours. The amount of water entering the idler must not exceed 250 g.

In summary, the manufacturing quality of conveyor idlers has a significant impact on their rotational resistance and service life. By optimizing the type, clearance, sealing, and lubricant of the bearing, the rotational resistance of conveyor idlers can be effectively reduced, and their sealing performance can be improved. The regulations and implementation of inspection methods can effectively ensure the safe and stable operation of conveyor idlers, providing strong support for the efficient operation of coal mine conveyor systems.

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