Classification and Application Fields of Needle Roller Bearings

Needle Roller Bearing

Needle roller bearings can be divided into many types according to their structure and use. They have a wide range of uses in different application fields.

The following are some common classifications of needle roller bearings and their application areas:

Single Row Needle Roller Bearing: This type of bearing consists of a single row of needle rollers, usually between a pair of inner and outer rings. They are commonly used in small mechanical equipment such as household appliances, small power tools and rotating parts of bicycles.

Double Row Needle Roller Bearings: Double-row needle roller bearings have two arranged needle rollers that can withstand larger radial loads and axial loads. They are commonly used in industrial equipment, agricultural machinery and automotive transmission system.

Fully Riveted Needle Roller Bearings: Fully riveted needle roller bearings generally have high load-bearing capacity and stiffness and are suitable for applications that need to withstand high axial loads, such as automotive clutches and transmissions, motorcycle engines and construction machinery.

Combined Needle Roller Bearings: Combined needle roller bearings include multiple single-row needle roller bearings combined to withstand complex loads such as radial, axial and transient loads. They are commonly used in high-precision machine tools, aircraft engines and heavy construction machinery.

Sealed Needle Roller Bearings: Sealed needle roller bearings include inner rings, outer rings and seated units. They are typically used in applications that require high stiffness and precision, such as industrial machinery, printing machinery, and CNC machine tools.

Needle Roller Bearings Without Inner Ring: This type of bearing does not have an inner ring, instead the shaft directly acts as the inner ring. They are suitable for specific space-constrained applications such as motorcycle swing arms and rear wheel supports in bicycles.

Application areas include but are not limited to the following aspects:

Automobile Industry: Needle roller bearings are widely used in rotating parts in automobile engines, transmission systems, suspension systems and steering systems, such as crankshafts, connecting rods, clutches, gearboxes, etc.

Construction Machinery: Needle roller bearings are used in a variety of construction machinery, including excavators, loaders, bulldozers, and cranes, supporting their various rotating and moving parts.

Aircraft Industry: Needle roller bearings play a key role in aircraft engines, landing gear, servos and flight control systems, ensuring the stability and reliability of the aircraft.

Agricultural Machinery: Needle roller bearings are often used for rotating parts in agricultural equipment such as farm tractors, harvesters and planters.

Industrial Machinery: Needle roller bearings are widely used in industrial machinery, such as food processing machinery, printing machinery, textile machinery and metal processing machinery.

Bearing Support Devices: Needle roller bearings are also used to support and transmit linear motion in industrial machinery such as roller conveyors, linear guides, and sliding door systems.

In general, needle roller bearings are widely used due to their high load-bearing capacity, high stiffness and high precision.