7005 ACD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7005 ACD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
0.32 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5445 lbf
Radial static load rating
4500 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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
Price available upon request.
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7005 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 7005 ACD/P4AQBCC is a precision quadruplex matched set of angular contact ball bearings, engineered for applications demanding exceptional rigidity and accuracy under combined loads. This Metric system bearing set, preloaded to Moderate / Class C, provides a highly stable and rigid support system in a compact arrangement. Its primary advantage lies in its ability to handle significant radial and axial loads simultaneously, making it ideal for high-precision, high-reliability machinery where minimal deflection is critical.
7005 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7005 ACD/P4AQBCC provides detailed technical specifications:
- 7005: Basic bearing designation (25mm bore, 47mm OD, 12mm width per bearing).
- A: Signifies a 25° contact angle, optimized for carrying high axial loads.
- CD: Indicates a Quadruplex (4 bearings) set in a Back-to-Back (DB) arrangement.
- P4A: Denotes a very high precision tolerance class, exceeding standard P4 levels for superior running accuracy.
- QBCC: Specifies the moderate preload (C) applied to the matched set (QBC).
7005 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Stability: The Quadruplex Back-to-Back (QBC) matched arrangement creates an extremely rigid bearing system, effectively resisting complex moment loads and minimizing shaft deflection under operation.
- High Load Capacity: The 25° contact angle and four-bearing configuration provide a high dynamic and static load rating (5445 lbf / 4500 lbf), enabling reliable performance under demanding combined radial and axial loads.
- Precision Performance: Manufactured to a P4A tolerance class, this set ensures extremely low runout and high rotational accuracy, which is essential for precision spindles and instrumentation.
- Optimized for High-Speed Operation: The lightweight Phenolic cage and optimized internal geometry contribute to a high limiting speed of 85,000 rpm, reducing centrifugal forces and operating temperatures.
- Durable Construction: Components made from Chrome Steel (rings and balls) ensure high durability and long service life under typical operating conditions.
7005 ACD/P4AQBCC Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is typically specified for the most demanding applications, including:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Advanced Medical and Dental Equipment
- Aerospace Actuation and Control Systems
