71909 ACB/HCP4A Super Precision Angular Contact Ball Bearing with P4A Precision Grade and Hybrid Ceramic Balls for High Speed 45,000 rpm
71909 ACB/HCP4A 45×68×12 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing Hybrid Ceramic Balls High Speed
Super-precision, high-speed B design, single row angular contact ball bearing featuring precise dimensions, high static load capacity, P4A precision grade, and hybrid ceramic balls. Delivers superior performance and reliability for applications requiring high rotational accuracy and stability.
| Part Number | 71909 ACB/HCP4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Dimensions |
Inner Bore Diameter (d): 45 mm Inner Bore Diameter Tolerance: -0.006mm to 0 Outer Bore Diameter (D): 68 mm Outer Bore Diameter Tolerance: -0.007mm to 0 Width (B): 12 mm Width Tolerance: -0.2mm to 0 |
| Specifications |
Contact Angle: 25° (15°, 40° Available) Material: Hybrid (Chrome Steel Rings, Ceramic Balls) 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: P4A better than P4 (ABEC-7) Weight: 0.13 kg Matched Arrangement: No Universal Matching Bearing: No Preload: Not applicable |
| Load and Speed |
Dynamic Radial Load: 7020 N Static Radial Load: 5500 N Reference Speed For Grease: 30,000 rpm Limiting Speed For Oil: 45,000 rpm |
The 71909 ACB/HCP4A angular contact ball bearing is engineered for high-precision and high-performance applications, featuring:
- 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
The 71909 ACB/HCP4A bearing is an ultra-precision angular contact ball bearing designed for high-precision applications in various fields:
- Precision Machine Tools and Spindles: Used in CNC machine spindles, grinding spindles, and tool magazine systems, supporting high-speed cutting and low vibration
- Aerospace Equipment: Applied in precision instruments and transmission systems, such as flight controls and turbo machinery supports
- High-Speed Rotating Equipment: Suitable for high-speed devices like centrifuges and motor spindles
- High-Precision Instruments: Used in semiconductor equipment and optical instruments, relying on P4 accuracy and low friction
RoHS & REACH, IATF16949:2016
High Speed and Stiffness, High Running Accuracy, High Load Carrying Capacity
OEM&ODM Customized Services, Online Support, Professional Service
Please Contact Us
Standard sizes available, custom sizes upon request
Factory Manufacturer
If you need more detailed information, feel free to ask!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.