707 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
707 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.006 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.572 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
418 lbf
Radial static load rating
140 lbf
Limiting speed
205 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 101.25
/ each
In Stock
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707 ACE/HCP4A Bearing Product Overview & Core Advantages
The 707 ACE/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. It features a single-row design with a 25° contact angle, optimized to handle significant combined loads—both radial and axial. Manufactured to a P4 (ABEC-7) tolerance class, it ensures superior running accuracy and rotational stability. A key advantage is its ceramic ball construction, which reduces centrifugal forces and enables high-speed operation up to 205,000 rpm, making it ideal for demanding, high-reliability applications where precision and speed are critical.
707 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| ACE | Angular Contact, 25° contact angle | Optimized for handling combined radial and axial loads efficiently. |
| HC | Hybrid Ceramic (Ceramic balls, steel rings) | Enables higher speeds, reduced friction, and longer service life. |
| P4A | P4 (ABEC-7) Precision Class with specific internal design | Guarantees ultra-high precision and smooth, quiet operation. |
707 ACE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces weight and centrifugal forces, allowing for extremely high limiting speeds and improved durability in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent guidance and stability at high rotational speeds, contributing to the bearing's overall high-speed performance.
- Precision & Rigidity: Manufactured to P4 tolerance class with precise bearing dimensions (7mm bore, 19mm OD), this bearing offers exceptional running accuracy and system rigidity, minimizing vibration and noise.
- Preload & Contact Angle: The bearing is supplied with preload and features a 25° contact angle, which enhances stiffness and is ideal for applications requiring precise shaft positioning and resistance to complex combined loads.
707 ACE/HCP4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- High-Speed Spindles for CNC machining centers and PCB drilling machines
- Precision Instrumentation and medical devices
- High-Frequency Motors and turbo-molecular pumps
- Aerospace auxiliary systems and instrumentation
