Needle Roller Bearing NA5903 17x30x18 mm High Load Capacity
Specifications
| Bore Diameter | Customizable |
| Outer Diameter | Customizable |
| Width | Customizable |
| Material | Bearing Steel |
| Type | Open, Without Inner/Outer Ring |
| Load Direction | Radial |
Description
Precision radial bearing made of high-quality bearing steel, designed for flexible integration without inner or outer ring. Ideal for compact mechanical systems requiring reliable performance. Supplied in protective packaging with global HS code 8482102000.
Basic Info.
- Spherical Roller Bearing
- Taper Roller Bearing
- Alloy Guide Rail
- Thrust Needle Roller Bearing
- Thrust Self-aligning Roller Bearing
- Cylindrical Roller Bearing
- Bearing Block
- Pillow Block Bearing
- Self-Aligning Ball Bearing
- Deep Groove Ball Bearing
- Angular Contact Ball Bearing
- Linear Bearing
- Auto Bearing
- Needle Bearing
- Thrust Ball Bearing
Related Products
Specifications
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Vibration Level | Z1, Z2, Z3, Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Service | OEM ODM |
| Origin | China |
Description
High-performance bearing made of bearing steel, offering precision ratings from P0 to P4 and low vibration levels. Ideal for high-speed, noise-sensitive applications with long service life.
Specifications
| Material | Bearing Steel |
| Precision Rating | P0 P6 P5 P4 |
| Vibration Level | Z1 Z2 Z3 Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Service | OEM ODM |
| Origin | China |
Description
High-performance bearing made of bearing steel, offering precision ratings from P0 to P4 and low vibration levels. Ideal for high-speed, noise-sensitive applications with long service life.
Specifications
| Inner Diameter | Standard |
| Outer Diameter | Standard |
| Thickness | Open Type |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
Description
Precision radial bearing made of high-quality bearing steel, ideal for industrial applications. Features an open design without inner or outer rings, offering flexibility in mounting and integration. Durable, reliable, and manufactured to meet international standards.
Specifications
| Bore Diameter | Customizable per model |
| Outer Diameter | Varies by size |
| Width | Model-specific thickness |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C2, C3, C4, C5 |
| Material | Bearing Steel |
Description
High precision radial bearing without inner ring, designed for long life and low noise performance. Available in multiple models and precision grades, suitable for OEM/ODM applications with customizable clearance and high reliability.
Specifications
| Model No. | HMK0810/HMK0815 |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C2, C3, C4, C5 |
| Features | High Precision, Long Life, Low Noise |
Description
High-performance radial bearings made from premium bearing steel, available in multiple precision and clearance options. Ideal for industrial applications requiring reliability and durability. OEM/ODM service supported.
Specifications
| Model NO. | KR19, KR22, KRV Series |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Vibration Level | Z1-Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Origin | China |
Description
High-performance bearing series with precision options from P0 to P4, designed for durability and smooth operation. Ideal for industrial applications requiring high speed and low noise. Made from premium bearing steel, these models offer reliable performance under demanding conditions.
Specifications
| Material | Bearing Steel |
| Precision Rating | P0 P6 P5 P4 |
| Vibration Level | Z1 Z2 Z3 Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Service | OEM ODM |
| Origin | China |
Description
High-performance bearing made of bearing steel, offering precision ratings from P0 to P4, low vibration (Z1-Z4), and ideal for high-speed, low-noise applications. Suitable for OEM/ODM orders with reliable durability.
Specifications
| Model No. | KRV40-PP |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Vibration Level | Z1, Z2, Z3, Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Origin | China |
Description
High-performance bearing made of durable bearing steel, offering high precision, low vibration, and long service life. Ideal for high-speed, low-noise applications. OEM/ODM services available.
Specifications
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Vibration Level | Z1, Z2, Z3, Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Service | OEM ODM |
| Origin | China |
Description
Premium bearing with high precision and low noise performance, ideal for industrial applications requiring reliability and durability. Manufactured in China under strict quality control.
Specifications
| Bore Diameter | Standard |
| Outer Diameter | Standard |
| Width | Standard |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Origin | China |
Description
Open-type radial bearing made of high-quality bearing steel, ideal for various industrial applications. Designed without outer and inner rings for flexible integration. Durable, reliable, and produced under strict quality control standards in China.
Specifications
| Bore Diameter | Customizable |
| Outer Diameter | Varies by Model |
| Width | Model Dependent |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4, P2 |
Description
High precision radial bearing without inner ring, ideal for OEM/ODM applications. Features long service life, low noise, and high reliability. Available in multiple clearance classes (C0-C5) and precision grades. Made from premium bearing steel with consistent quality. Suitable for various industrial uses requiring durable performance.
Specifications
| Model No. | HK3520 |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C2, C3, C4, C5 |
| Features | High Precision, Long Life, Low Noise |
| Origin | China |
Description
Radial bearing without inner ring, ideal for high precision applications. Offers long service life with low noise operation. Suitable for OEM/ODM use with various clearance and precision options available.

















