Overview of HK1212 Needle Roller Bearing

The HK1212 needle roller bearing belongs to the type of drawn cup needle roller bearings, with distinct structural characteristics. The outer ring is manufactured using a thin-walled and precision stamping forming process, made of special alloy steel plates. It not only has an extremely thin wall thickness, effectively reducing the overall size, but also possesses high strength and rigidity, capable of withstanding large loads. The interior accommodates a relatively large number of needle rollers, which are in the shape of slender cylinders. This design enables the bearing to have a larger load-bearing area within a limited space, significantly enhancing the radial load-carrying capacity. Meanwhile, the HK1212 needle roller bearing is usually equipped with a cage that has undergone surface hardening treatment, which enhances its wear resistance, ensures the stability and uniform distribution of the needle rollers during high-speed operation, thereby achieving high-precision and low-friction rotational movement.

Application Fields and Examples

Automotive Industry

The automotive industry has strict requirements for the performance, reliability, and compact design of components, and the HK1212 needle roller bearing excels in this field. In the valve train of automobile engines, it is used at the pivot of the rocker arm. The rocker arm needs to swing back and forth frequently and quickly to control the opening and closing of the valves. The HK1212 needle roller bearing, with its high rigidity and low friction characteristics, ensures that the rocker arm can move accurately and smoothly, not only reducing energy loss, improving the fuel economy of the engine, but also extending the service life of the valve train. For example, after applying this bearing in a certain high-performance engine, the power output of the engine becomes more stable, and the fuel consumption is reduced by approximately 5%. In the automobile transmission, the HK1212 needle roller bearing is used to support the gear shaft, bearing the radial and axial loads generated during gear meshing. Its compact structural design is suitable for the limited space of the transmission, and it can operate stably under high-speed and high-torque working conditions, ensuring the efficiency and accuracy of power transmission, and playing a key role in improving the acceleration performance and shifting smoothness of the automobile.

Pump equipment: In various industrial pumps, such as centrifugal pumps and gear pumps, the HK1212 needle roller bearing is used to support the pump shaft. When the pump is in operation, the shaft will be subjected to radial force generated by liquid pressure and torque from the motor drive. The high rigidity and good lubrication performance of the HK1212 needle roller bearing enable it to effectively resist these forces, ensure the stable rotation of the pump shaft, thereby ensuring the stability of the pump's flow rate and head, and improving the working efficiency and reliability of the pump. After a chemical enterprise applied this bearing to its centrifugal pump, the operation stability of the pump was significantly improved, and the annual shutdown time caused by equipment failures was reduced by approximately 30%.

Household Appliances

Washing machines: During the washing and dehydration process of a washing machine, the inner drum rotates at high speed and reverses frequently, which places extremely high requirements on the bearings supporting the inner drum. The HK1212 needle roller bearing is installed between the inner drum shaft and the outer drum. With its good radial and axial load-carrying capacity, it can stably support the operation of the inner drum under different rotational speeds and loads, reduce the shaking of the inner drum, and lower the operating noise. Washing machines equipped with this bearing can have their maximum dehydration speed increased by 10%, with better dehydration effect, and the noise is reduced by approximately 5 decibels, bringing users a quieter and more efficient laundry experience.

Refrigerators: The compressor of a refrigerator is a core component, and its stable operation is related to the refrigeration effect and energy consumption of the refrigerator. The HK1212 needle roller bearing is used to support the crankshaft of the compressor. During the continuous high-load operation of the compressor, it can effectively reduce the friction between the crankshaft and the bearing, reduce energy loss, improve the working efficiency of the compressor, thereby enhancing the refrigeration performance of the refrigerator and reducing energy consumption. Data shows that the energy consumption of refrigerators applying this bearing is reduced by approximately 8% compared to those without it, with a significant energy-saving effect.

Agricultural Machinery

In agricultural production, large agricultural machinery such as tractors and combine harvesters face complex operating environments and high-intensity workloads. Taking the transmission system of a tractor as an example, the HK1212 needle roller bearing is applied in parts such as the gearbox and differential, bearing the impact loads from the engine output torque and the complex terrain in the field. Its sturdy and durable characteristics ensure that the transmission system can still work stably and efficiently under harsh working conditions such as muddy and bumpy terrain, guaranteeing the normal driving of the tractor and the reliable operation of various agricultural implements, and providing strong support for the smooth progress of agricultural production.