S7207 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7207 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.29 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.007mm to 0
Width
17 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
13
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6908 lbf
Radial static load rating
4680 lbf
Limiting speed
18 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:
$ 242.22
/ each
In Stock
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S7207 ACD/P4A Bearing Product Overview & Core Advantages
The S7207 ACD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. This sealed bearing features a phenolic cage and is preloaded, enabling it to handle combined loads (radial and axial) simultaneously with high reliability. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it an ideal choice for high-speed spindles and other precision machinery where minimal runout and vibration are critical.
S7207 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Indicates a high rigid design, typically associated with a specific internal geometry for enhanced stiffness. |
| P4A | Specifies the tolerance class P4 (ABEC-7), denoting very high precision. The "A" may indicate a specific preload level or internal clearance. |
S7207 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The bearing is supplied with preload, which eliminates internal clearance. This significantly increases system stiffness, improves rotational accuracy, and reduces noise and vibration under load.
- Superior Load Capacity: The 25° contact angle and robust construction allow it to support substantial combined radial and axial loads efficiently.
- High-Speed Capability: The lightweight phenolic resin cage ensures excellent stability and low centrifugal forces, contributing to a high limiting speed of 18,000 rpm.
- Sealed & Lubricated for Life: As a sealed bearing that is pre-lubricated, it is protected from contamination and is designed for maintenance-free operation within its specified temperature range.
- Precision Performance: Manufactured to P4 tolerance with chrome steel rings and balls, it guarantees consistent, high-precision performance.
S7207 ACD/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Grinding Equipment
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- High-Precision Robotics
