Single Row NJ203 Bearing High Load 17x40x12 Roller Bearing Industrial / Textile Use
Price:
Negotiable
MOQ:
1
Delivery Time:
5-8 work days
Brand:
Kesle
Product Description
Single Row NJ203 Bearing High Load 17x40x12 Roller Bearing Industrial / Textile Use
NJ203 Cylindrical Roller Bearing 17x40x12mm - High Load, Industrial/Textile Use
Product Overview
The NJ203 is a single-row cylindrical roller bearing designed to efficiently handle complex mechanical operating conditions. It meets stringent requirements for high precision, high load capacity, and long service life in various industrial applications.
Structural Design
Inner and Outer Ring Structure:
- Outer ring features integral ribs on both sides for enhanced stability and prevention of axial roller movement
- Inner ring equipped with single-side rib to accommodate axial displacement from thermal expansion
Rollers and Cage:
- Cylindrical roller design optimized for load capacity and operational stability
- High-quality cage material guides roller movement, reducing vibration and noise at high speeds
Key Technical Parameters
| Parameter | Value | Application Advantages |
|---|---|---|
| Inner Diameter | 17mm | Compatible with small mechanical shafts in compact equipment |
| Outer Diameter | 40mm | Provides sufficient bearing area in limited space |
| Width | 12mm | Meets structural strength while considering axial space constraints |
| Dynamic Load Capacity | 12,600N (NACHI) / 20kN (SKF) | Suitable for mechanical components with frequent start-stop operations |
| Static Load Capacity | 7,950N (NACHI) / 14.3kN (SKF) | Stably supports equipment weight and static external forces |
| Limiting Speed (Grease) | 16,000r/min (NACHI) / 20,000r/min (SKF) | Suitable for high-speed textile machinery under grease lubrication |
| Limiting Speed (Oil) | 19,000r/min (NACHI) / 22,000r/min (SKF) | Higher speeds with oil lubrication for demanding applications |
Performance Advantages
- High Radial Load Capacity: Withstands larger radial loads than comparable bearings, ideal for heavy-duty equipment
- High-Speed Stability: Maintains excellent stability with low vibration and noise at high speeds
- Long Service Life: High-quality materials and design ensure extended operational life
- Separable Design: Simplifies installation and maintenance processes
Application Fields
- Industrial Machinery: Transmission systems, reducers, conveyor belt drives
- Mining Equipment: Small hoists, crushers in harsh working conditions
- Textile Machinery: High-speed rollers and spindles requiring precision and low vibration
- Electronic Equipment Manufacturing: Precision processing equipment, drilling machines, placement machines
Installation and Maintenance
Installation Points:
- Shaft tolerance: m6, bearing housing hole tolerance: J7
- Hot fitting temperature: 80℃ - 120℃
- Verify radial and axial clearance after installation
Lubrication Points:
- General conditions: NLGI 2 lithium-based grease
- Initial grease filling: 1/3 - 1/2 of bearing internal space
- High temperature/speed/load: Synthetic lubricating oil with complete system
Maintenance Points:
- Weekly vibration detection, monthly temperature monitoring
- Immediate inspection for abnormal vibration or temperature increases
- Maintain clean operating environment to prevent contamination
Technical Alternative Solutions
Low-Cost Alternative: NJ203E model with stamped steel cage reduces cost by 15-20% with slightly reduced performance
Special Working Condition Alternatives:
- High-temperature environments: NJ203HT with special high-temperature material cage
- Corrosive environments: NJ203SS stainless steel model for food processing and chemical industries
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dongguan Kesle Electronic Hardware Co., Ltd
Location
Guangdong Dongguan Kesile Electronic & Hardware Products Factory
Contact Person
orlenda li