7024 ACD/HCPA9ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7024 ACD/HCPA9ADT
Basic Information
System of measurement
Metric
Weight
3.51 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
120 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
180 mm
Outside diameter tolerance
-0.004mm to 0
Width
56 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
19.05 mm
Ball quantity
22
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
40050 lbf
Radial static load rating
52200 lbf
Limiting speed
16 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
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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7024 ACD/HCPA9ADT Bearing Product Overview & Core Advantages
The 7024 ACD/HCPA9ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance under combined loads. This duplex tandem (DT) arrangement features two matched bearings preloaded for maximum system rigidity and axial load capacity. Manufactured to PA9A tolerance class with a 25° contact angle and ceramic balls, it delivers superior high-speed capability, extended service life, and reliable operation in precision machinery. Its compact design and pre-configured matched set simplify installation and ensure optimal performance.
7024 ACD/HCPA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7024 | Basic bearing series, defining the standard dimensions: 120mm bore, 180mm OD, 56mm width. |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| D | Duplex Tandem (DT) arrangement. Two bearings are mounted in tandem to increase axial load capacity in one direction. |
| HCP | High-Capacity Phenolic cage. This lightweight and robust cage material contributes to high-speed performance and reduced friction. |
| A9A | Tolerance class designation (PA9A), indicating very high precision levels for running accuracy and dimensional stability. |
| DT | Reinforces the Duplex Tandem matched set configuration, consisting of 2 bearings. |
7024 ACD/HCPA9ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally stiff bearing system, capable of handling high combined loads and significant axial loads in one direction. The 25° contact angle is optimized for axial load support.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls (Silicon Nitride) significantly reduces centrifugal forces and friction, enabling a high limiting speed of 16,000 rpm. Ceramic balls also offer lower thermal expansion and electrical insulation properties.
- Precision & Longevity: Manufactured to PA9A tolerance class, this bearing ensures minimal runout and vibration for precise shaft positioning. The use of high-grade chrome steel rings and ceramic balls enhances durability and resistance to wear.
- Optimized for Lubrication: The bearing is supplied lubricated and features an open seal type, making it suitable for integration into centralized lubrication systems for consistent performance across its operating temperature range (-30°C to 110°C).
7024 ACD/HCPA9ADT Bearing Typical Application Areas
This high-precision, high-speed bearing is engineered for advanced industrial applications where reliability and accuracy are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in high-performance automotive and aerospace transmissions.
- High-Frequency Motors and Spindles: For PCB drilling, semiconductor manufacturing, and other precision automation.
- Pumps and Compressors: Applications requiring robust axial load capacity and high rotational speeds.
