S7012 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7012 ACB/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.86 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.747 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4972 lbf
Radial static load rating
5130 lbf
Limiting speed
32.5 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
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
No drawings available at the moment, will be launched soon
In Stock
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S7012 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The S7012 ACB/HCP4ADGA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. Engineered to a P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its universal matchable (SU) design allows for flexible mounting in pairs to support combined loads (radial and axial) from both directions. The combination of a ceramic ball material and a phenolic cage enables superior high-speed performance and reduced operational friction, making it an ideal choice for advanced machinery requiring maximum reliability and longevity.
S7012 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Advantage |
|---|---|---|
| S7012 | Bearing Series & Size | Denotes a 60mm bore, 95mm OD super-precision bearing series. |
| ACB | Angular Contact, 25° Contact Angle | Optimized for high axial load capacity and high-speed operation. |
| HC | Hybrid Ceramic | Silicon Nitride (Si3N4) ceramic balls for lower density, reduced centrifugal force, and higher limiting speed. |
| P4A | Tolerance Class | Exceeds ABEC 7/ISO P4 standards, ensuring ultra-precise running accuracy and minimal vibration. |
| DGA | Sealed & Grease Lubricated | Features non-contact seals and is pre-lubricated with high-performance grease for long-term, maintenance-free operation. |
S7012 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust construction provide excellent resistance to combined loads, ensuring stable performance under complex stress conditions.
- Superior High-Speed Performance: The hybrid ceramic design with lightweight phenolic resin cage significantly reduces rotating mass and friction, enabling a high limiting speed of 32,500 rpm.
- Enhanced Durability & Longevity: Ceramic balls are electrically insulating, non-corrosive, and harder than steel, leading to dramatically extended service life, especially in contaminated or electrically charged environments.
- Maintenance-Free Operation: The sealed design and factory-applied grease lubrication protect against contamination and provide reliable performance across the specified temperature range (-30°C to 110°C).
S7012 ACB/HCP4ADGA Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision, speed, and reliability 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 actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- Medical Equipment: High-speed dental handpieces and CNC surgical tools.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
