7219 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7219 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
2.7 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
32 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
29925 lbf
Radial static load rating
25650 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7219 ACDGB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable bearing with a P4A tolerance class, it is engineered to handle combined loads efficiently, supporting significant radial loads and axial loads in one direction. Its light preload (Class B) ensures minimal deflection and smooth operation right from installation, making it ideal for high-precision, high-reliability systems requiring optimal performance and stability.
7219 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7219 ACDGB/P4A provides detailed technical specifications through its suffixes:
- 7219: Basic designation indicating a 95 mm bore, 170 mm OD, and 32 mm width.
- AC: Angular Contact design with a 25° contact angle for handling combined loads.
- D: Signifies a specific internal design optimized for high performance.
- GB: Indicates a Light Preload (Class B) for enhanced rigidity and reduced runout.
- P4A: Denotes an ultra-precision tolerance class superior to ABEC 7, ensuring extremely tight dimensional and running accuracy.
7219 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single bearing with universal matching (SU) capability allows for precise arrangement in pairs to achieve superior system rigidity. The P4A tolerance class and light preload guarantee exceptional running accuracy and minimal vibration.
- Superior Load Capacity: With a 25° contact angle and robust construction, this bearing offers a high radial dynamic load rating of 29,925 lbf and a radial static load rating of 25,650 lbf, making it capable of handling demanding combined loads.
- Optimized High-Speed Performance: The phenolic cage contributes to lower friction and higher limiting speed (15,000 rpm), enabling reliable operation in high-speed applications. The open design facilitates efficient lubrication management.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and a long operational life under a wide temperature range of -30°C to 110°C.
7219 ACDGB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance machinery and systems, including:
- Machine Tool Spindles (for grinding, milling, and turning centers)
- High-Speed Precision Spindles
- Industrial Pumps and Compressors
- Robotic Arms and Precision Gearboxes
- Medical and Laboratory Equipment
- Aerospace Control Systems
