7030 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7030 ACD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
12.5 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
150 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
225 mm
Outside diameter tolerance
-0.004mm to 0
Width
105 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
23.812 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
78975 lbf
Radial static load rating
121500 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7030 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7030 ACD/P4ATBTA is a precision angular contact ball bearing configured in a Triplex Back-to-Back (TBT) matched set. This arrangement is engineered to deliver exceptional system rigidity and handle significant combined loads, including high radial loads and thrust loads in both directions. Manufactured to the exacting P4A tolerance class, it is designed for applications demanding the highest levels of rotational accuracy and operational reliability. The pre-lubricated design and phenolic cage contribute to its high-performance capabilities in demanding industrial environments.
7030 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7030 | Basic bearing series, defining the standard boundary dimensions (150mm bore, 225mm OD, 105mm width). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class superior to ABEC-7, ensuring minimal runout and vibration. |
| TB | Specifies the bearings are matched in a Back-to-Back (DB) arrangement. |
| T | Denotes a Triplex set, consisting of three individual bearings supplied as a pre-matched unit. |
| A | Specifies an "Extra light" preload for minimal friction and optimal high-speed performance. |
7030 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
- Superior Rigidity and Load Capacity: The Triplex Back-to-Back (TBT) configuration creates a highly rigid bearing system capable of withstanding heavy combined radial and axial loads. This setup provides excellent moment load resistance, making it ideal for applications where shaft deflection must be minimized.
- High-Speed Capability: The phenolic cage offers low weight and excellent sliding properties, which is crucial for achieving the high limiting speed of 11,000 rpm. The 25° contact angle provides a balanced performance for both radial and axial loads at high speeds.
- Precision Performance: Conformance to the P4A tolerance class ensures extremely tight dimensional and running accuracy. This results in smooth, quiet operation with minimal vibration, which is critical for the precision of the final application.
- Optimized Material Selection: The use of chrome steel for both rings and balls ensures high durability and fatigue life. The bearing is pre-lubricated for immediate operation and reliable performance within its specified temperature range.
7030 ACD/P4ATBTA Bearing Typical Application Areas
The 7030 ACD/P4ATBTA is engineered for high-performance machinery requiring maximum precision and rigidity. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in industrial robotics and high-torque transmission systems.
- High-Frequency Motors and Spindles: Applications where rotational accuracy and speed are paramount.
- Aerospace Test Rigs and Positioning Systems: Where extreme accuracy and reliability under load are non-negotiable.
