NJ1009M Single Row Cylinder Roller Bearing 45x75x16 For Power Generation Equipment

NJ1009M Single-Row Cylindrical Roller Bearing (45x75x16mm) For Industrial/Automotive​

The NJ1009M is a high-performance single-row cylindrical roller bearing, designed to deliver reliable operation and strong load-handling capabilities in various mechanical systems, making it widely applicable across multiple industries.

Structural Features

Ring Design

• Outer Ring: Has a smooth inner surface that acts as a stable raceway for cylindrical rollers. Made from high-quality vacuum-degassed high-carbon chromium bearing steel (e.g., GCR15), it offers excellent rolling fatigue strength, high hardness, and superior wear resistance, enabling it to withstand heavy loads during continuous operation.

• Inner Ring with Integral Flange: Features an integral flange on one side, which guides the cylindrical rollers and maintains their alignment during rotation. Crafted from high-grade bearing steel with precise machining, it ensures a tight fit with the shaft. The integral flange enhances radial load-carrying capacity and provides moderate axial load support.

Rolling Element and Cage

• Cylindrical Rollers: These are key load-carrying components, made from chrome steel with strict requirements for roundness, surface finish, and dimensional accuracy. Their optimized shape and size efficiently transfer radial loads, reducing friction and wear.

• Cage: Functions to keep the cylindrical rollers evenly spaced and aligned. Usually made of steel or high-performance polymers, its design allows free movement of the rollers while preventing collisions, improving rotational efficiency and extending the bearing's service life.

Key Dimensions

Technical Performance

Load Ratings

• Radial Dynamic Load Rating: Capable of handling substantial continuous or intermittent radial forces, making it suitable for industrial machinery, automotive components, and power-transmission systems.

• Radial Static Load Rating: Can withstand static or slowly changing radial loads without permanent deformation, ensuring stability during equipment startup, shutdown, or standby.

Speed Ratings

• Reference Speed: The optimal operating speed under normal conditions, ensuring good performance, reliability, and a long service life when operated within this range.

• Limit Speed: The maximum rotational speed under specific conditions. Operating near this speed requires careful attention to lubrication, load, and temperature to prevent accelerated wear.

Lubrication and Sealing

• Lubrication: Grease lubrication is commonly used for general applications, while oil lubrication is preferred for high-speed or extreme-temperature environments. Some bearings come pre-lubricated for easy installation.

• Sealing: Available with rubber seals (to protect against dust, dirt, and moisture) and metal shields (for better protection against larger debris). Sealed bearings extend service life in harsh operating conditions by maintaining a clean and lubricated internal environment.

Application Scenarios

• Industrial Machinery: Used in conveyor systems to support heavy-load rollers and in machine tools (such as lathes and milling machines) to support rotating shafts, ensuring smooth operation during material handling and machining processes.

• Automotive Industry: Applied in transmission systems (gear shafts and differential assemblies) and wheel hubs of medium-sized vehicles, handling radial loads and ensuring stable operation of the drivetrain.

• Power-Generation Equipment: Supports rotor shafts in electric motors and generator components, withstanding radial and axial forces from high-speed rotation, ensuring efficient power generation.

Product Advantages

• High Radial Load Capacity: Robust construction and high-quality materials enable it to handle heavy radial loads, suitable for heavy-duty applications.

• Smooth Operation: Precision-machined components and optimized design minimize friction, reducing energy consumption, wear, vibration, and noise.

• Long Service Life: High-quality steel, strict manufacturing controls, and effective lubrication and sealing systems ensure durability under continuous and varying loads.

• Cost-Effective: Wide availability, long service life, and low maintenance requirements result in a low total cost of ownership.

• Easy Maintenance: Separable components simplify installation and replacement; pre-lubricated and sealed versions reduce maintenance effort, with readily available replacement parts.