7214 ACD/P4ADBA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7214 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
2.22 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
125 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
15.875 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
24300 lbf
Radial static load rating
24750 lbf
Limiting speed
28 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
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7214 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7214 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and rotational accuracy. This back-to-back (DB) matched pair configuration is engineered to handle combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy and high-speed capability. The extra light preload (Class A) ensures minimal deflection under operational stresses, making it ideal for high-precision, high-reliability machinery where stability is paramount.
7214 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series, indicating a 70 mm bore, 125 mm OD, and 48 mm width. |
| A | 25° contact angle, optimized for carrying higher axial loads. |
| CD | Indicates a duplex back-to-back (DB) arrangement of two matched bearings. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy. |
| DBA | Specifies the back-to-back duplex mounting with extra light preload (Class A). |
7214 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a rigid bearing system that effectively resists moment loads and shaft deflection, providing exceptional operational stability.
- Superior Load Capacity: With a 25° contact angle and dual bearing arrangement, it offers excellent performance under combined radial and axial loads from both directions.
- Precision & High-Speed Performance: The P4A tolerance class ensures minimal runout and vibration. The phenolic resin cage contributes to lower friction and higher limiting speeds (up to 28,000 rpm), making it suitable for high-speed applications.
- Optimized Material Selection: Constructed from chrome steel for both rings and balls, providing high durability and fatigue resistance. The phenolic cage offers excellent strength-to-weight ratio and smooth operation.
7214 ACD/P4ADBA Bearing Typical Application Areas
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Speed Precision Spindles in PCB drilling and routing equipment
- Industrial Pumps and Compressors requiring precise shaft positioning
- Robotic Arm Joints and Precision Gearboxes demanding high rigidity
- Aerospace and Defense Positioning Systems where accuracy is critical
