71903 ACE/HCP4A Super Precision Angular Contact Ball Bearing with 17 mm Bore Diameter P4A Precision Grade and Hybrid Ceramic Balls
71903 ACE/HCP4A 17×30×7 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing Hybrid Ceramic Balls High Speed
Super-precision, high-speed E 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 | 71903 ACE/HCP4A |
| Bearing Type | Angular Contact |
| Measurement Unit | Metric |
| Inner Bore Diameter (d) | 17 mm |
| Inner Bore Diameter Tolerance | -0.004mm to 0 |
| Outer Bore Diameter (D) | 30 mm |
| Outer Bore Diameter Tolerance | -0.005mm to 0 |
| Width (B) | 7 mm |
| Width Tolerance | -0.2mm to 0 |
| 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 | 0.015 kg |
| Dynamic Radial Load | 3190 N |
| Static Radial Load | 1460 N |
| Reference Speed For Grease (r/min) | 75,000 rpm |
| Limiting Speed For Oil (r/min) | 115,000 rpm |
- 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 wide temperature range
The 71903 ACE/HCP4A bearing is distinguished by its high load capacity and precision, making it essential in various industries including:
- Machine tools and machining centers
- Robotics and robotic arms
- Printing machinery and printing rollers
- Semiconductor manufacturing and silicon wafer fault detection units
- Shipbuilding and marine gyro stabilizers
- Medical devices and equipment
Its capability to perform reliably under demanding conditions underscores its critical role in enhancing operational efficiency and performance across diverse sectors.
Certificates: RoHS & REACH, IATF16949:2016
Features: High Speed and Stiffness, High Running Accuracy, High Load Carrying Capacity
Services: OEM & ODM Customized Services, Online Support, Professional Service
Samples: Please Contact Us
Size Options: Standard sizes available, custom sizes upon request
Factory Manufacturer: Yes
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