7219 ACD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7219 ACD/P4ADGB
Basic Information
System of measurement
Metric
Weight
5.4 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
170 mm
Outside diameter tolerance
-0.004mm to 0
Width
64 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
23.812 mm
Ball quantity
15
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
48600 lbf
Radial static load rating
51300 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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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7219 ACD/P4ADGB Bearing Product Overview & Core Advantages
The 7219 ACD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This universal matchable (SU) bearing is manufactured to P4A tolerance class, ensuring superior dimensional and running accuracy. Its key advantage lies in its ability to accommodate combined loads—handling significant radial loads and axial loads in one direction simultaneously. The 25° contact angle and light preload (Class B) optimize it for high-speed operation while providing high system rigidity, making it an ideal choice for high-precision, high-reliability machinery.
7219 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7219 ACD/P4ADGB provides detailed technical specifications:
- 7219: Basic designation indicating a metric series bearing with a 95 mm bore, 170 mm OD, and 64 mm width.
- A: Signifies a 25° contact angle.
- CD: Indicates a universal matchable (SU) design. Two bearings can be mounted in a "back-to-back" (DB) or "face-to-face" (DF) arrangement to accommodate combined or moment loads.
- P4A: Denotes a super-precision tolerance class with enhanced running accuracy requirements.
- DGB: Specifies a light preload (Class B) applied to the bearing set.
7219 ACD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and universal matchable pairing enable the bearing to support high combined radial and axial loads. The 25° contact angle provides an optimal balance between axial load capacity and speed capability.
- Super-Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme rotational precision.
- High-Speed Capability: The phenolic cage and optimized internal geometry contribute to lower friction and higher limiting speeds (up to 15,000 rpm with grease lubrication). The light preload minimizes heat generation at high speeds.
- Optimized for Matched Sets: As a Universal Matchable (SU) bearing, it is supplied lubricated and ready to be paired with another identical bearing to form a pre-adjusted set, simplifying installation and ensuring predictable performance.
7219 ACD/P4ADGB Bearing Typical Application Areas
This high-precision bearing is engineered for demanding applications in:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high rigidity and accuracy.
- High-Frequency Motors and Spindles: Where high rotational speeds and precision are paramount.
- Precision Gearboxes and Drive Systems: In robotics and automation equipment.
- Medical and Laboratory Equipment: Such as centrifuges and precision scanners.
- Aerospace Actuation Systems: For control surfaces and other critical rotating assemblies.
