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4-006-10-0071 Angular Contact Ball Bearing INA Nkia 5902 Homag
- Haopai
- Guangdong, China
- 5-10days
- 50
- 4-006-10-0071
Product Advantages and Features
1.High Load-Carrying Capacity
This bearing is a combination of a radial needle roller bearing and an angular contact ball bearing, enabling it to withstand both large radial loads and light one-way axial loads simultaneously. Its basic dynamic radial load rating (Cr) is 12,000 N, basic static radial load rating (C0r) is 13,600 N, basic dynamic axial load rating (Ca) is 2,900 N, and basic static axial load rating (C0a) is 4,200 N, ensuring stable operation under various working conditions.
2.Excellent High-Speed Performance
It features high limiting speed and reference speed. The limiting speed of INA NKIA 5902 can reach 21,600 r/min, and the reference speed is 17,000 r/min, making it suitable for high-speed rotating mechanical components.
3.Compact Structure
The bearing has a low cross-sectional height, with an inner diameter of 15 mm, outer diameter of 28 mm, and width of 18 mm. This compact design makes it particularly suitable for space-constrained applications, providing reliable support within limited space.
4.Long-Life Design
Some models, such as the INA NKIA5902-XL, adopt the X-life long-life design. By optimizing the bearing's material, manufacturing process, and structural design, it enhances the bearing's service life and reliability, while reducing maintenance costs and downtime.
5.Easy Installation
The inner and outer rings of the angular contact ball bearing can be separated, making the installation and adjustment process more convenient and flexible. Suitable installation methods can be selected according to different application requirements.
Product Technical Parameters
Parameter Category | Parameter Name | Specific Value/Description | Unit |
Basic Information | Product Model | INA NKIA 5902 (Corresponding Part No.: 4-006-10-0071) | - |
| Bearing Type | Combined Angular Contact Ball Bearing (Radial Needle Roller + Angular Contact Ball) | - |
Basic Dimensions | Inner Diameter (d) | 15 | mm |
| Outer Diameter (D) | 28 | mm |
| Width (B) | 18 | mm |
| Cross-Section Height | Low-Profile Design (Suitable for Space-Constrained Applications) | - |
Load Ratings | Basic Dynamic Radial Load Rating (Cr) | 12000 | N |
| Basic Static Radial Load Rating (C0r) | 13600 | N |
| Basic Dynamic Axial Load Rating (Ca) | 2900 | N |
| Basic Static Axial Load Rating (C0a) | 4200 | N |
Speed Performance | Limiting Speed (nlim) | 21600 | r/min |
| Reference Speed (nref) | 17000 | r/min |
Structure & Design | Inner/Outer Ring Feature | Separable Design (Facilitates Installation & Adjustment) | - |
| Special Model Design (Example) | NKIA 5902-XL: Adopts X-life Long-Life Optimized Design | - |
Material Characteristics | Main Material | High-Quality Bearing Steel | - |
Product Application Scope
NA NKIA 5902 is a needle roller/angular contact ball bearing, not a simple angular contact ball bearing. It may have the following applications in woodworking machinery:
Woodworking machine spindle: INA NKIA 5902 bearings may be used in the spindle parts of woodworking machines such as milling machines and drilling machines. These machine tools require the spindle to withstand radial and axial loads during operation, and to be able to rotate at high speeds. INA NKIA 5902 bearings have high load-bearing capacity and high-speed operating performance, which can meet the working requirements of woodworking machine tool spindles.
Product Description
Comparison Item | INA NKIA 5902 | General Angular Contact Ball Bearings |
Structure | Composed of a radial needle roller bearing and an angular contact ball bearing | Typically single-row or double-row angular contact ball structure, without the needle roller bearing component |
Inner Diameter | 15mm | Various size specifications available, common ones include 10mm, 12mm, 15mm, etc. |
Outer Diameter | 28mm | Varies depending on the inner diameter; for the same inner diameter, the outer diameter is generally larger than that of INA NKIA 5902 |
Thickness | 18mm | Thickness varies by model, generally thicker than that of INA NKIA 5902 |
Load Capacity | Capable of withstanding heavy radial loads and relatively light unidirectional axial loads | Single-row angular contact ball bearings can only bear axial loads in one direction, while double-row ones can bear bidirectional axial loads. The overall axial load capacity is relatively higher than that of INA NKIA 5902, but the radial load capacity is usually lower than that of INA NKIA 5902 |
Limiting Speed | 22000r/min | Varies by specific model and precision class, generally ranging from 10000r/min to 25000r/min |
Application Scenarios | Suitable for occasions requiring space saving and bearing heavy radial loads as well as light unidirectional axial loads, such as woodworking machine spindles, feeding transmission systems, etc. | Widely used in machine tool spindles, power tools, pumps, compressors, etc. Depending on the specific structure and precision, they can be applied to equipment with different load and speed requirements |
The structural advantage of this bearing is the combination of "needle roller+angular contact ball", which balances space and load-bearing capacity, high speed+stability, matches equipment operating conditions, cost-effectiveness+standardization, reduces application barriers, and accurately matches core applications such as woodworking machinery.
Company Introduction
Haopai Co., Ltd. was established in 2008 and is a comprehensive service enterprise specializing in machinery and accessories for the home industry. We have a specialized and innovative customer center, component assembly workshop, equipment debugging workshop, processing workshop, and warehousing. Our main business includes sales of mechanical parts, equipment upgrades and renovations, equipment maintenance and relocation, customized non-standard equipment, intelligent production line planning, automation support, machine vision, shared cloud warehouses, etc. We provide customers with professional personalized services. After more than ten years of accumulation and development, our elite service team of nearly 200 people has served over 10000 enterprises nationwide. Over the years, we have accumulated more than 200000 non-standard accessory categories, making us the most comprehensive one-stop procurement platform in the industry. We have the most competitive technical renovation team in China, with a total of over 100000 equipment upgrade and renovation projects. Haopai Co., Ltd. has been committed to the great cause of making global machinery and preferred Chinese parts for many years, and is determined to become the preferred brand for comprehensive services of global machinery and parts.


Deeply Cultivating the Industry for More Than Ten Years, Creating an Intelligent Manufacturing Full Chain System for Woodworking Machinery.
After 16 years of industry accumulation, we have always focused on the research and manufacturing of CNC woodworking machinery. We have established a leading full chain production system and specialized team structure, providing one-stop services from research and development to delivery for global customers. It is currently a one-stop procurement platform with a complete range of categories in the industry.
Specialized and Innovative Customer Center



Haopai has been committed to the business philosophy of quality first, integrity-based, and win-win cooperation. We adhere to the business philosophy of ultimate customer experience and efficient operation, and uphold the service spirit of taking non-standard customization, drilling difficulties, and solving difficulties as our own responsibility. We constantly innovate and aspire to become the preferred brand for comprehensive services of global machinery and accessories. We are committed to making the great cause of global machinery and preferred Chinese accessories contribute to the development of national brands and the strength of Haopai people.




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We Have Served over 10000 Enterprises Nationwide and Have Accumulated over 200000 Non-standard Accessory Categories over the Years, Covering Major Home Furnishing Brands Across the Country.