Bolt Type Wheel Roller Needle Cam Bearing KR30-KR47 – High-Precision, Low-Friction
Basic Info.
| Model NO. | KR30 KR32 KR35 KR40 KR47 |
| 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-precision angular contact ball bearings with optimized internal geometry for high-speed, low-noise operation. Made from premium bearing steel, rated P0–P4, vibration class Z1–Z4. Ideal for OEM/ODM applications requiring reliability and long service life.
Basic Info.
Related Products
Specifications
| Bore Diameter | 55 mm |
| Outer Diameter | 62 mm |
| Width | 18 mm |
| Load Direction | Radial Bearing |
| Precision Rating | P0, P6, P5, P4, P2 |
| Lubrication | Grease or Oil |
Description
Needle Roller Bearing K55X62X18, made of high-quality bearing steel, features a compact design without inner or outer ring. Ideal for radial load applications with high precision requirements. Available with various clearance options (C0, C3, C4) and precision grades. Suitable for OEM/ODM use, produced in China under BDL brand.
Specifications
| Bore Diameter | 350 mm |
| Outer Diameter | 400 mm |
| Width | 80 mm |
| Model No. | RNA4864 |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
Description
Precision needle roller bearing with high load capacity, made of premium bearing steel. Available in various clearance and precision grades. Suitable for heavy-duty radial applications. OEM/ODM service supported. Fast delivery within 3-7 days.
Specifications
| Bore Diameter | 220 mm |
| Outer Diameter | 250 mm |
| Width | 50 mm |
| Load Direction | Radial Bearing |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C3, C4 |
Description
Needle Roller Bearing RNA4840 made of Bearing Steel, without outer and inner ring, suitable for radial load applications. Offers high precision and multiple clearance options. Lubrication compatible with grease or oil.
Specifications
| Bore Diameter | 55 mm |
| Outer Diameter | 80 mm |
| Width | 25 mm |
| Model NO. | NA4911 |
| Material | Bearing Steel |
Description
Needle Roller Bearing NA4911, made of high-quality bearing steel, features radial load direction and closed type design. Suitable for high precision applications with options for grease or oil lubrication. Precision ratings available up to P2.
Specifications
| Bore Diameter | 120 mm |
| Outer Diameter | 140 mm |
| Width | 30 mm |
| Model No. | RNA4822 |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
Description
Precision Needle Roller Bearing RNA4822, made of high-quality bearing steel, features radial load capacity and compact design without inner or outer ring. Available in P0-P2 precision ratings with C0-C4 clearance options, suitable for various industrial applications requiring reliability and performance.
Specifications
| Bore Diameter | 68 mm |
| Outer Diameter | 85 mm |
| Width | 25 mm |
| Model NO. | RNA4912 |
| Material | Bearing Steel |
| Origin | Japan |
Description
High-precision needle roller bearing RNA4912 from IKO, featuring radial load direction and closed type design. Made of high-quality bearing steel with options for grease or oil lubrication. Ideal for industrial applications requiring compact, durable bearings.
Specifications
| Bore Diameter | 55 mm |
| Outer Diameter | 80 mm |
| Width | 45 mm |
| Load Direction | Radial Bearing |
| Precision Rating | P0, P6, P5, P4, P2 |
| Lubrication | Grease or Oil |
Description
The NA6911 Needle Roller Bearing features a compact design with high load capacity. Made from premium bearing steel, it operates efficiently under radial loads. Suitable for industrial applications requiring precision and durability. Available with OEM/ODM support and fast delivery.
Specifications
| Bore Diameter | 360 mm |
| Outer Diameter | 440 mm |
| Width | 80 mm |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
Description
Needle Roller Bearing NA4872, made of high-quality bearing steel, features radial load direction and precise performance. Available with OEM/ODM service, this closed-type bearing offers P0-P2 precision ratings and C0-C4 clearance options, ideal for industrial applications.
Specifications
| Bore Diameter | 160 mm |
| Outer Diameter | 190 mm |
| Width | 50 mm |
| Load Direction | Radial Bearing |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C3, C4 |
Description
Needle Roller Bearing RNA4928 made of Bearing Steel, without outer and inner ring, suitable for radial load applications. Lubricated with grease or oil, available in high precision grades and various clearances. OEM/ODM service provided.
Specifications
| Bore Diameter | 17 mm |
| Outer Diameter | 30 mm |
| Width | 23 mm |
| Model NO. | NA6903 |
| Material | Bearing Steel |
| Load Direction | Radial |
Description
Needle roller bearing NA6903 with high precision steel construction, designed for radial load applications. Features compact dimensions of 17x30x23 mm, available with various clearance options (C0/C3/C4) and precision ratings up to P2. Suitable for OEM/ODM use with short delivery time.
Specifications
| Bore Diameter | 85 mm |
| Outer Diameter | 120 mm |
| Width | 63 mm |
| Load Direction | Radial Bearing |
| Precision Rating | P0, P6, P5, P4, P2 |
| Clearance | C0, C3, C4 |
Description
Needle Roller Bearing NA6917 made of Bearing Steel, featuring high precision and durability. Suitable for radial load applications with options for grease or oil lubrication. Ideal for industrial machinery requiring compact design and high performance.
Specifications
| Bore Diameter | 85 mm |
| Outer Diameter | 120 mm |
| Width | 35 mm |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Description
Needle Roller Bearing NA4917, made of high-quality bearing steel, features radial load capacity and compact design. Suitable for high-precision applications with options for OEM/ODM service. Efficient delivery in 3-7 days.