7034 CD/P4AH1DBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7034 CD/P4AH1DBA
Basic Information
System of measurement
Metric
Weight
14 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
170 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
260 mm
Outside diameter tolerance
-0.004mm to 0
Width
84 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
26.988 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
77625 lbf
Radial static load rating
110250 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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
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7034 CD/P4AH1DBA Bearing Product Overview & Core Advantages
The 7034 CD/P4AH1DBA is a precision angular contact ball bearing configured as a duplex back-to-back (DB) matched set. Engineered to the exacting P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its primary advantage lies in its ability to handle combined loads—simultaneously supporting substantial radial loads and axial loads from both directions—making it ideal for applications demanding high rigidity and precise shaft positioning. The pre-lubricated design and phenolic cage contribute to reliable, long-term performance in demanding operational environments.
7034 CD/P4AH1DBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex bearing in a back-to-back (DB) arrangement, providing high moment stiffness. |
| P4A | Denotes a high-precision tolerance class with enhanced running accuracy and dimensional tolerances. |
| H1 | Specifies a preload level of Extra Light (Class A), minimizing friction and heat generation at high speeds. |
| DB | Reinforces the back-to-back mounting configuration for optimal rigidity. |
| A | Indicates a 30° contact angle (standard for this series), balancing axial and radial load capacity. |
7034 CD/P4AH1DBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back design creates a wide, stable support system that significantly increases moment load capacity and system rigidity. This enables the bearing to effectively handle combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance standards with tight bore, outside diameter, and width tolerances, ensuring exceptional running accuracy, reduced vibration, and precise shaft guidance.
- Optimized High-Speed Operation: The lightweight phenolic resin cage and Extra Light preload (Class A) minimize centrifugal forces and friction, allowing for a high limiting speed of 11,000 rpm.
- Durable Construction: Components made from chrome steel provide high hardness and fatigue resistance, while the open design facilitates efficient lubrication management.
7034 CD/P4AH1DBA Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery requiring high rigidity, speed, and accuracy, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes and Pumps
- Aerospace Positioning Systems
- Medical and Laboratory Equipment
