7034 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7034 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7034 ACD/P4ATBTA is a high-precision angular contact ball bearing supplied as a triplex back-to-back (TBT) matched set. Engineered for applications demanding extreme rigidity and running accuracy, this bearing set is designed to accommodate combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior dimensional stability and rotational precision. Its extra light preload (Class A) ensures minimal deflection under load, making it an ideal choice for high-performance spindles and other precision machinery where high rigidity and operational reliability are paramount.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7034 | Basic bearing series and size designation (170mm bore, 260mm OD). |
| ACD | Angular Contact design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class exceeding ABEC 7/ISO P4 standards. |
| TB | Specifies a Back-to-Back mounting arrangement. |
| T | Denotes a Triplex set, consisting of three matched bearings. |
| A | Specifies an Extra Light Preload (Class A). |
7034 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
The performance of the 7034 ACD/P4ATBTA is derived from its specialized construction:
- Triplex Back-to-Back (TBT) Matched Set: This configuration provides exceptional system rigidity and moment load capacity, significantly reducing axial and radial runout under operational stresses.
- 25° Contact Angle: Optimized for sustaining significant axial loads in combination with radial loads, a critical feature for spindle applications.
- Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at the limiting speed of 11,000 rpm, offering low friction and excellent acceleration characteristics.
- Premium Chrome Steel: Both rings and balls are manufactured from high-grade chrome steel, ensuring high fatigue life and durability under the specified dynamic and static load ratings.
- Precision Tolerances: The P4A tolerance class and tight dimensional control on bore, outside diameter, and width guarantee predictable performance and ease of installation in precision assemblies.
7034 ACD/P4ATBTA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is ideally suited for demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring minimal runout and high positional accuracy.
- High-Frequency Machining Centers: Where rapid acceleration and deceleration are required.
- Other Precision Rotary Systems: Such as high-performance pumps and precision test equipment.
