71905/VA9D1 Super Precision Angular Contact Ball Bearing with 25 mm Bore Diameter P4 Precision Grade for High Speed Operation
Price:
Please contact us,thanks
MOQ:
1000
Delivery Time:
2-3 weeks
Brand:
CNBTZC or OEM
Product Description
71905/VA9D1 Super Precision Single Row Angular Contact Ball Bearing 7905
Super-precision universally matchable single row angular contact ball bearing for driven tools.
The 71905/VA9D1 bearing features a bore diameter of 25 mm, outside diameter of 42 mm, and width of 9 mm. With precise dimensions, high static load capacity, and P4 precision grade, it delivers superior performance and reliability for applications requiring high rotational accuracy and stability.
Technical Specifications
| Part Number | 71905/VA9D1 |
|---|---|
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Inner Bore Diameter (d) | 25 mm |
| Inner Bore Diameter Tolerance | -0.005mm to 0 |
| Outer Bore Diameter (D) | 42 mm |
| Outer Bore Diameter Tolerance | -0.006mm to 0 |
| Width (B) | 9 mm |
| Width Tolerance | -0.2mm to 0 |
| Contact Angle | 25° (15°,40° Available) |
| Material | Chrome Steel |
| Cage Material | Phenolic |
| Number of Rows | 1 Single Row |
| Seal Type | Open |
| Temperature Range | -30°C to 150°C |
| Lubrication | Grease or Oil |
| Tolerance Class | P4 |
| Weight | 0.043 kg |
| Matched Arrangement | No |
| Universal Matching Bearing | Yes, back-to-back (<>), face-to-face (><) or tandem (>>) DB,DF,DT 2 bearings |
| Preload | Not applicable |
| Dynamic Radial Load | 6370 N |
| Static Radial Load | 3800 N |
| Reference Speed For Grease (r/min) | 25,000 rpm |
| Limiting Speed For Oil (r/min) | 35,000 rpm |
Performance Features
- Engineered for high-precision and high-performance applications
- Very tight tolerances suitable for precise machinery
- Ability to handle both radial and axial loads simultaneously
- High-speed operation with stability
- Low torque and friction for energy efficiency
- Enhanced rigidity for accuracy under heavy loads
- Durability with extended service life
- Effective performance across a wide temperature range
Applications
The 71905/VA9D1 bearing is designed to handle both radial and axial loads at high speeds and precision, making it ideal for use in medium to small-sized precision equipment such as:
- Machine tool spindles and motor rotors
- New energy vehicles (NEVs), particularly in electric drive systems and gearboxes
- Industrial automation and robotics, supporting high dynamic responses in components like robot joints and servo motors
- Small motors and household appliances
- Light-duty transmission systems
Certifications & Services
| Certificate | RoHS & REACH, IATF16949:2016 |
|---|---|
| Feature | High Speed and Stiffness, High Running Accuracy, High Load Carrying Capacity |
| Service | OEM&ODM Customized Services |
| Samples | Please Contact Us |
| Service | Online Support, Professional Service |
| Size | Standard, For custom sizes, please contact us |
| Factory Manufacturer | Yes |
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Beining Intelligent Technology (Zhejiang) Co., Ltd
Location
No.502,Xinxing Third Road,Cixi Intelligent Home Appliance High Tech Industrial Development Zone, Zhejiang,China
Contact Person
Shelley Dong