7002 ACE/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 ACE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.056 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
32 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1550 lbf
Radial static load rating
821 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
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
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7002 ACE/P4ADBB Bearing Product Overview & Core Advantages
The 7002 ACE/P4ADBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set delivers superior high rigidity and can accommodate combined radial and axial loads simultaneously. Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery where reliability is paramount.
7002 ACE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7002 ACE/P4ADBB is decoded as follows:
- 7002: Basic bearing series, indicating a 15mm bore, 32mm OD, and 18mm width.
- A: Denotes a 25° contact angle, optimized for carrying higher axial loads.
- CE: Indicates the bearing is supplied as a duplex set with a specific preload.
- P4A: The tolerance class, signifying very high precision with tight dimensional and running accuracy tolerances.
- DB: The matched arrangement is Back-to-Back (DB), which provides high moment rigidity and is suitable for applications with overturning moments.
7002 ACE/P4ADBB Bearing Structural Features & Performance Benefits
The bearing's design incorporates several key features that translate into distinct performance advantages:
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement of two bearings creates a rigid support system that effectively resists moment loads and can handle significant combined radial and axial loads.
- Precision & High-Speed Performance: Built to P4A tolerance class and featuring a lightweight phenolic resin cage, the bearing achieves smooth operation and a high limiting speed of 95,000 rpm, minimizing friction and heat generation.
- Optimized Component Design: The 25° contact angle and high-grade chrome steel rings and balls are engineered for durability and long service life under demanding conditions.
- Light Preload (Class B): The bearings are supplied preloaded, which increases system stiffness, improves rotational accuracy, and reduces noise and vibration.
7002 ACE/P4ADBB Bearing Typical Application Areas
This high-precision duplex bearing set is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Aerospace Control Systems
