7207 ACD/P4AQBTA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7207 ACD/P4AQBTA
Basic Information
System of measurement
Metric
Weight
1.14 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
68 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°C to 110 °C
Radial dynamic load rating
18135 lbf
Radial static load rating
18675 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Tandem Back-to-Back (QBT)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7207 ACD/P4AQBTA Bearing Product Overview & Core Advantages
The 7207 ACD/P4AQBTA is a precision quadruplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched set of four bearings in a Tandem Back-to-Back (QBT) arrangement provides superior axial and radial load capacity in a compact footprint. Manufactured to P4A tolerance class and featuring an Extra light (Class A) preload, it delivers high rotational accuracy and stability, making it ideal for high-speed, high-precision machinery where maximum system rigidity is critical.
7207 ACD/P4AQBTA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7207 ACD/P4AQBTA is decoded as follows:
- 7207: Basic series designation for a metric angular contact ball bearing with a 35mm bore, 72mm OD.
- A: Denotes a 25° contact angle, optimized for carrying higher axial loads.
- CD: Indicates a duplex bearing with a specific internal design and clearance.
- P4A: Specifies the tolerance class, indicating very high precision for both dimensional and running accuracy.
- QBTA: Defines the matched set arrangement:
- Q: Quadruplex (set of four bearings).
- BT: Tandem Back-to-Back mounting configuration.
- A: Indicates Universal matching is not applicable; this is a pre-matched set.
7207 ACD/P4AQBTA Bearing Structural Features & Performance Benefits
- Ultra-High Rigidity & Load Capacity: The quadruplex QBT arrangement creates an exceptionally rigid bearing system capable of withstanding heavy combined loads (radial and axial) from multiple directions, making it suitable for applications with complex loading conditions.
- Precision Performance: Built to P4A tolerance class with a 25° contact angle and Class A preload, this bearing ensures minimal runout, high positional accuracy, and consistent performance under high speeds.
- Optimized High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel components contribute to a high limiting speed of 41,000 rpm, enabling reliable operation in demanding spindle applications.
- Superior Material & Construction: The use of high-grade chrome steel for both rings and balls ensures high durability and fatigue life. The open design allows for customized lubrication schemes to further optimize performance for specific operating conditions.
7207 ACD/P4AQBTA Bearing Typical Application Areas
This high-precision bearing set is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring maximum rigidity and accuracy.
- Precision Gearboxes and Robotic Drives where compact, high-load-capacity solutions are needed.
- High-Frequency Motors and Aerospace Actuators that operate at extreme speeds.
- Medical Equipment such as high-speed dental handpieces and imaging scanner rotors.
