Application of Large Needle Bearings

Application of Large Needle Bearings

Frist of all,we need to know basis knowledge of needle bearing.

Needle roller bearings are roller bearings with cylindrical rollers, which are both thin and long. This type of roller is called a rolling needle. Despite having a small cross-section, the bearing still has a high load-bearing capacity. Needle roller bearings are equipped with thin and long rollers (roller diameter D ≤ 5mm, L/D ≥ 2.5, L is the length of the roller), so the radial structure is compact. When the inner diameter size and load capacity are the same as other types of bearings, the outer diameter is the smallest, making them particularly suitable for support structures with limited radial installation dimensions.
According to different usage scenarios, bearings or needle and cage components without inner rings can be selected. At this time, the journal surface and shell hole surface that match the bearing directly serve as the inner and outer rolling surfaces of the bearing. To ensure the same load capacity and operating performance as bearings with rings, the hardness, machining accuracy, and surface quality of the shaft or shell hole raceway surface should be similar to the raceway of the bearing ring.

As a common mechanical component, large needle bearings are widely used in various mechanical equipment. Its main function is to support and rotate mechanical components, reducing wear and tear. Improve the efficiency and service life of the equipment.

1. Automotive industry
Mainly used for components such as engines, transmissions, steering gears, wheel hubs, etc. Capable of withstanding high-speed, high-temperature, and high-pressure working environments.
2. Machine tool industry.
The high-precision speed of high-speed motors, centrifuges, and needle roller bearings can ensure the accuracy and efficiency of machine tool processing.
3. Electric power industry.
Needle roller bearings are suitable for various harsh working environments. In these equipment, factors such as bearing material, lubrication method, and sealing performance should be considered.
4. Metallurgical industry.
Metallurgical industry equipment requires bearings to withstand large loads

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