7030 ACDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7030 ACDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
3.44 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
35 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
36675 lbf
Radial static load rating
40500 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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7030 ACDGA/HCP4A Bearing Product Overview & Core Advantages
The 7030 ACDGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single bearing features a 25° contact angle and an Extra Light (Class A) preload, making it ideal for systems requiring high rigidity and minimal deflection under complex loads. Its universal matchable (SU) design allows for flexible mounting arrangements in sets. Constructed with a phenolic cage and ceramic balls, it is optimized for high-speed operation up to 11,000 rpm, offering superior performance in precision machinery.
7030 ACDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7030 ACDGA/HCP4A is decoded as follows:
- 7030: Basic series number, indicating a metric bearing with a 150mm bore and 225mm outside diameter.
- AC: Angular Contact design.
- D: High contact angle of 25°.
- GA: Signifies a specific internal design and preload grade.
- /HCP4A: Denotes the tolerance class P4A, indicating very high running accuracy, and the bearing is supplied lubricated.
7030 ACDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle and an Extra Light preload (Class A) ensures high system stiffness and precise rotational accuracy, critical for applications like machine tool spindles. The P4A tolerance class guarantees extremely tight dimensional and running accuracy.
- Optimized for High Speeds: The lightweight phenolic cage and low-density ceramic balls significantly reduce centrifugal forces, enabling stable operation at the high limiting speed of 11,000 rpm.
- Superior Load Capacity: Designed to handle combined radial and axial loads simultaneously. The radial dynamic load rating of 36,675 lbf and static load rating of 40,500 lbf ensure reliable performance under significant stress.
- Universal Matching Capability (SU): This bearing is universally matchable, allowing for simplified arrangement in duplex sets (back-to-back or face-to-face) to accommodate complex load conditions without selective mounting.
7030 ACDGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace Control Systems
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
