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S71903 ACD/HCP4A Super Precision Single Row Angular Contact Ball Bearing 7903 2RZ
S71903 ACD/HCP4A 17×30×7 mm Super Precision High Capacity Single Row Angular Contact Ball Bearing Hybrid Ceramic Balls High Speed
Super-precision, high-capacity, single row angular contact ball bearing with seals. The S71903 ACD/HCP4A bearing features precise dimensions, high static load capacity, P4A precision grade, and hybrid ceramic balls, delivering superior performance and reliability for applications requiring high rotational accuracy and stability.
Technical Specifications
Part Number
S71903 ACD/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
Seal on both side
Temperature Range
-30°C to 150°C
Lubrication
Grease
Tolerance Class
P4A better than P4 (ABEC-7)
Weight
0.015 kg
Dynamic Radial Load
3970 N
Static Radial Load
2000 N
Reference Speed For Grease
56,000 rpm
Limiting Speed For Oil
90,000 rpm
Performance Features
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 S71903 ACD/HCP4A bearing, distinguished by its superior performance and precision, is widely used in various industrial applications including:
Metal cutting machine tools (machining centers, high-speed milling and grinding machines)
Robotics (delicate operations and semiconductor fault detection)
Printing machinery
Measurement devices
Marine gyro stabilizers
High-performance automotive components (race car wheel hubs)
Its ability to provide high rotational accuracy, stability, and durability under demanding conditions makes it essential for enhancing efficiency, precision, and safety across these diverse sectors.
Certifications: 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 Sizes: Standard sizes available, custom sizes upon request Factory Manufacturer: Yes
Beining Intelligent Technology
Precision Bearings for High-Performance Industries
At Beining Intelligent Technology, we design and manufacture precision bearings for high-demand applications in:
CNC Machine Tool Spindles
Robotics
Motors
With a focus on quality, automation, and...
Beining Intelligent Technology
Precision Bearings for High-Performance Industries
At Beining Intelligent Technology, we design and manufacture precision bearings for high-demand applications in:
CNC Machine Tool Spindles
Robotics
Motors
With a focus on quality, automation, and...
