707 ACD/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
707 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.008 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
544 lbf
Radial static load rating
214 lbf
Limiting speed
140 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 101.34
/ each
In Stock
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707 ACD/P4A Bearing Product Overview & Core Advantages
The 707 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Designed to accommodate combined loads (simultaneous radial and axial loads) in one direction, it features a 25° contact angle for optimal axial load capacity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical.
707 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | 25° Contact Angle, High Precision | Optimized for high axial load capacity and high-speed performance. |
| P4A | P4 (ABEC-7) Tolerance Class | Guarantees extremely tight dimensional and running accuracy for precision applications. |
707 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row design with a 25° contact angle and P4 tolerance class provides high system rigidity and exceptional running accuracy, minimizing deflection under load.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously. The optimized contact angle ensures efficient axial load transmission.
- High-Speed Capability: The lightweight, durable phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 140,000 rpm.
- Optimized for Performance: The open seal type allows for custom lubrication schemes, while the standard lubrication and chrome steel construction ensure reliable operation within a temperature range of -30°C to 110°C.
707 ACD/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Precision Drives
- Robotic Arm Joints
- Medical and Dental Equipment
- Aerospace Actuators and Instrumentation
