S7017 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7017 ACEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.85 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
85 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.004mm to 0
Width
22 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
7312 lbf
Radial static load rating
6300 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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S7017 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The S7017 ACEGA/HCP4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a universal matchable bearing, it is supplied in a set of two for simplified installation and optimal preload configuration. Its core advantages include exceptional rotational accuracy (P4A tolerance class), the ability to handle combined loads from radial and axial directions, and superior high-speed performance enabled by its ceramic balls and phenolic cage. This bearing is engineered for applications requiring maximum reliability and minimal thermal growth.
S7017 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7017 ACEGA/HCP4A provides detailed technical specifications:
- S70: Super-precision series with a 25° contact angle.
- 17: Bore diameter code (85 mm).
- AC: Angular Contact design.
- EGA: Identifies the specific internal geometry and preload level (Extra light / Class A).
- HCP4A: Hybrid Ceramic balls with a Phenolic cage and P4A super-precision tolerance class.
S7017 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially at high speeds. This construction also offers benefits in electrically sensitive environments.
- High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage ensures stability and minimal friction at the limiting speed of 28,000 rpm.
- Super-Precision P4A Tolerance: Extremely tight dimensional and running accuracy guarantees smooth, quiet operation and precise shaft positioning, critical for machine tool spindles and other high-precision equipment.
- Universal Matchability (SU): Supplied as a matched set of 2 bearings, they are manufactured to be universally interchangeable, simplifying mounting and ensuring consistent, pre-determined preload for optimal stiffness and performance.
- High Load Capacity: With a dynamic load rating of 7312 lbf and a static load rating of 6300 lbf, this bearing is capable of handling significant combined radial and axial loads.
S7017 ACEGA/HCP4A Bearing Typical Application Areas
The S7017 ACEGA/HCP4A is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense: Gyroscopes, radar systems, and jet engine components.
- High-Frequency Motors & Spindles: Motors for PCB drilling and dental handpieces.
- Medical Equipment: CT scanner gantries and high-speed centrifuges.
