S7011 CB/HCP4A 55*90*18 mm Super Precision High Capacity Single Row Angular Contact
Ball Bearing Ceramic Balls High Speed
Super-precision, high-speed B design, single row angular contact
ball bearing with seals
The S7011 CB/HCP4A bearing,bore diameter is 55 mm, outside diameter
is 90 mm,width is 18 mm,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 | S7011 CB/HCP4A |
Bearing Type | Angular Contact |
Measurement Unit | Metric |
Dimensions | Inner Bore Diameter (d) | 55 mm |
Inner Bore Diameter Tolerance | -0.007mm to 0 |
Outer Bore Diameter (D) | 90 mm |
Outer Bore Diameter Tolerance | -0.008m to 0 |
Width (B) | 18 mm |
Width Tolerance | -0.2mm to 0 |
Specifications | Contact Angle | 15° (25°,40° Available) |
Material | Hybrid (Chrome Steel Rings, Ceramic Balls) |
Cage Material | Phenolic |
Number of Rows | 1 Single Row |
Seal Type | Seal on both sides |
Temperature Range | -30°C to 150°C |
Lubrication | Grease |
Tolerance Class | P4A better than P4 |
Weight | 0.4 kg |
Matched Arrangement | No |
Universal Matching Bearing | No |
Preload | Not applicable |
Load and Speed | Dynamic Radial Load | 14000 N |
Static Radial Load | 11000 N |
Reference Speed For Grease (r/min) | 26,000 rpm |
Limiting Speed For Oil(r/min) | 40,000 rpm |


What's the Performance Features of S7011 CB/HCP4A Bearing?
The S7011 CB/HCP4A bearing, engineered for high-performance
applications, features P4A grade precision, an angular contact
design for handling significant radial and axial loads. Optimized
for high-speed operation with minimal vibration, it offers smooth,
quiet performance and is constructed from premium materials to
ensure durability and longevity. This bearing maintains high
precision during operation, making it ideal for critical
applications in machine tools, automation, aerospace, medical
devices, and other industries requiring exceptional accuracy and
reliability.
What's the Applications of the S7011 CB/HCP4A Bearing?
The S7011 CB/HCP4A bearing, known for its high precision, rigidity, and durability, finds
extensive use across various industries. Below are the core
application fields and specific scenarios where this bearing
excels:
1. Machine Tools and Precision Machining
- Ultra-High-Speed CNC Machine Tool Spindles : The S7011 CB/HCP4A is ideal for ultra-high-speed spindles in CNC
machines, ensuring high accuracy and stability during machining
operations.
- Rotary Tables in Five-Axis Machining Centers: This bearing supports the precise rotation required for five-axis
machining centers, enhancing both flexibility and precision in
complex part manufacturing.
- Precision Grinding Machine Spindles (e.g., Optical Mirror Surface
Grinding): For applications requiring extremely fine surface finishes, such
as optical mirror grinding, the S7011 CB/HCP4A ensures the
necessary precision and rigidity.
2. Semiconductor and Electronics Manufacturing
- Spindle of Wafer Dicing Machines (Ultra-Clean Environment): In semiconductor fabrication, wafer dicing requires bearings that
can operate in ultra-clean environments without contamination. The
S7011 CB/HCP4A meets these stringent cleanliness requirements.
- Precision Focusing Mechanisms in Photolithography Machines: High-precision focusing mechanisms in photolithography equipment
benefit from the exceptional accuracy and reliability of this
bearing.
- Rotating Axes in High-Speed Surface Mount Technology (SMT) Machines: The S7011 CB/HCP4A supports the rapid and accurate placement of
electronic components, crucial for high-speed SMT machines.
3. Aerospace and Satellite Systems
- High-Speed Rotors in Aircraft Engine Fuel Pumps: Aerospace fuel pumps require bearings capable of withstanding
extreme speeds and loads, making the S7011 CB/HCP4A an excellent
choice.
- Bearing Assemblies for Satellite Attitude Control Flywheels (Vacuum
Environment): In space applications, where vacuum conditions prevail, this
bearing provides reliable performance for satellite attitude
control systems.
- Servo Actuators for Highly Maneuverable UAVs: The precision and responsiveness of the S7011 CB/HCP4A make it
suitable for steering actuators in high-mobility drones.
4. New Energy and High-Speed Power Systems
- Hydrogen Fuel Cell Air Compressor Spindles : Hydrogen fuel cell air compressors require extremely high-speed
bearings like the S7011 CB/HCP4A to achieve optimal performance.
- Support for High-Speed Motor Rotors in Electric Vehicles: Electric vehicle motors often operate at very high speeds; this
bearing supports their rotors efficiently, contributing to improved
vehicle performance.
- Precision Transmission Systems in Wind Turbine Pitch Control: For wind turbines, where pitch control is critical, the S7011
CB/HCP4A ensures precise and reliable operation of transmission
systems.
5. Medical and Life Science Instruments
- MRI Scanner Rotary Gantry (Non-Magnetic Stainless Steel Material): MRI scanners require non-magnetic materials for their rotating
gantries. The S7011 CB/HCP4A made from non-magnetic stainless steel
ensures smooth and precise rotation without interfering with
imaging quality.
- Dental High-Speed Turbine Handpiece Bearings (300,000 rpm Class): Dental drills need high-speed, high-precision bearings to ensure
smooth and efficient operation. The S7011 CB/HCP4A meets these
demands.
- Centrifuge Rotor Support for Gene Sequencing Instruments: High-precision centrifuges used in gene sequencing rely on the
S7011 CB/HCP4A for stable and accurate rotor support, essential for
reliable genetic analysis.
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 |
If you need more detailed information , feel free to ask!
