Heavy-Duty High Load Precision NJ EM Series Cylindrical Roller Bearing for Gearboxes
Our cylindrical roller bearings are suitable for transmissions, motors, machine tools and heavy industrial equipment, featuring a long service life, reduced maintenance requirements and optimized power transmission performance.
Product Design and Core Specifications
A cylindrical roller bearing is characterized by its cylindrical rolling elements with a length typically greater than their diameter. This linear contact with the raceways, as opposed to the point contact in ball bearings, is the key to its exceptional performance. We offer a comprehensive range of standard types and sizes:
- Standard Series: Includes popular series such as N, ない, ニュージャージー州, NUP, そして NF, each designed for specific internal configurations and axial displacement capabilities (例えば, NU design allows free axial displacement of the shaft).
- Bore Diameter Range: From 20 mm to over 300 mm, catering to a vast spectrum of industrial machinery.
- 精度クラス: Available from standard ABEC 1 (P0) 高精度ABECへ 5 (P5) for applications requiring exceptional running accuracy and minimum vibration.
- ケージのオプション: Standard cages include high-strength, precision-stamped steel cages for durability and speed. Machined brass or polymer cages are available for specialized high-speed or corrosive applications.
- Internal Clearance: Supplied with standard radial internal clearance (C0, CN), with modified clearance groups (C3, C4) available for applications with specific thermal expansion or fit requirements.
製品概要：
Our cylindrical roller bearings represent a cornerstone of power transmission design. They meet rigorous international standards and deliver reliable performance in demanding industrial environments. さらに, they excel in applications where managing substantial radial loads is the primary challenge. 結果として, they provide significant advantages over conventional ball bearings under heavy-load conditions.
主な特長
- Exceptional Radial Load Capacity
The large contact area between the rollers and raceways enables these bearings to withstand very high radial loads. したがって, they are ideal for heavy-duty equipment. - High Rigidity and Precision
The optimized structure minimizes elastic deformation under load. 結果として, it delivers precise shaft guidance and positioning. - Optimized for High Speeds
Low-friction rolling elements and optimized cage designs support stable high-speed operation. さらに, they help reduce heat generation. - Long Life and Durability
We manufacture the bearings from vacuum-degassed SAE 52100 steel. さらに, controlled heat treatment improves wear resistance and fatigue life. - Separable Design for Easy Installation
Most models feature separable components. その結果, installation, removal, and maintenance become faster and easier.
アプリケーションシナリオ
- Gearboxes and Drivetrain Systems
例えば, cylindrical roller bearings handle high radial forces in automotive, wind turbine, and industrial gearboxes. - Electric Motors and Generators
Likewise, they support the main shafts of large industrial motors and generators, ensuring reliable operation. - 工作機械スピンドル
加えて, they provide the rigidity and precision required for machining centers, lathes, and grinding machines. - Material Handling and Construction Equipment
Meanwhile, they perform reliably in vibratory screens, conveyor pulleys, and crane wheels where shock loads are common. - Pump and Compressor Shafts
Finally, they ensure stable performance in pumps and compressor shafts, reducing maintenance requirements.
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