7202 ACD/P4AQBCC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7202 ACD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
0.17 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
44 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
2858 lbf
Limiting speed
95 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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7202 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 7202 ACD/P4AQBCC is a metric precision angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This bearing is supplied as a Quadruplex Back-to-Back (QBC) matched set, pre-configured with a Moderate (Class C) preload to deliver outstanding system stability and minimize axial and radial runout. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for machine tool spindles and other high-precision machinery where high rigidity and precise rotational performance are critical.
7202 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7202 ACD/P4AQBCC is decoded as follows:
- 7202: Basic series designation for a 15mm bore, 35mm OD angular contact ball bearing.
- A: Denotes a 25° contact angle, optimized for supporting high axial loads.
- CD: Indicates a Polyamide (Phenolic) cage, which contributes to lower friction, lower weight, and suitability for high-speed operation.
- P4A: Specifies the tolerance class, indicating very high precision for both dimensional and running accuracy.
- QBCC: Defines the matched set arrangement. "Q" stands for Quadruplex (a set of 4 bearings), "B" for Back-to-Back mounting, and "CC" indicates a Moderate preload (Class C) is applied to the set.
7202 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
The design of the 7202 ACD/P4AQBCC delivers significant performance advantages:
- Exceptional Rigidity & Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely rigid bearing system capable of withstanding complex combined loads (radial and axial loads from both directions) and overturning moments, which is essential for machine tool spindles.
- High-Speed Capability: The lightweight phenolic resin cage (CD) reduces centrifugal forces, while the optimized internal geometry and 25° contact angle allow for a high limiting speed of 95,000 rpm.
- Precision Performance: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, contributing to superior machining finish and positional accuracy.
- Optimized Preload: The factory-applied Moderate (Class C) preload eliminates internal clearance, enhancing system stiffness and rotational accuracy without requiring complex on-site adjustment.
7202 ACD/P4AQBCC Bearing Typical Application Areas
This high-precision, preloaded bearing set is engineered for demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Spindles
- Other High-Speed, High-Rigidity Rotary Systems in automation and precision engineering.
