7019 CDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7019 CDGC/P4A
Basic Information
System of measurement
Metric
Weight
1.21 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
145 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
18428 lbf
Radial static load rating
18000 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7019 CDGC/P4A Bearing Product Overview & Core Advantages
The 7019 CDGC/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Positioned in the P4A tolerance class, it delivers exceptional running accuracy and dimensional stability. Its primary advantage lies in its ability to accommodate combined loads—significant radial loads alongside substantial unidirectional axial loads—making it ideal for high-rigidity, high-speed applications. The bearing is universally matchable (SU), allowing for precise preload configuration when mounted in pairs or sets, enhancing system stability and performance.
7019 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model designation 7019 CDGC/P4A provides detailed technical specifications:
- 7019: Basic bearing series, indicating a metric bore diameter of 95 mm, outside diameter of 145 mm, and width of 24 mm.
- C: Denotes a 15° contact angle, optimized for handling higher axial loads.
- DG: Indicates a Moderate / Class C preload applied to the bearing.
- C: Specifies a Phenolic cage, which contributes to lower friction, reduced weight, and suitability for high-speed operation.
- P4A: The tolerance class, signifying very high precision with tight dimensional and running accuracy tolerances.
7019 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle provides robust support for combined radial and axial loads. The moderate preload (Class C) ensures minimal deflection under operational stresses, enhancing system rigidity and positioning accuracy.
- High-Speed Performance: The lightweight, durable phenolic cage minimizes centrifugal forces and friction, enabling a high limiting speed of 15,000 rpm. This makes the bearing suitable for demanding high-speed spindles and machinery.
- Precision Engineering: Manufactured to P4A tolerance class, the bearing features extremely tight dimensional tolerances (bore and OD tolerance: -0.004mm to 0) for superior running accuracy and smooth operation in precision applications.
- Universal Matchability (SU): As a universally matchable bearing, it can be paired in any combination (back-to-back, face-to-face, or tandem) to achieve specific preload and stiffness requirements, offering exceptional flexibility in machine design.
7019 CDGC/P4A Bearing Typical Application Areas
The 7019 CDGC/P4A is ideally suited for high-performance applications requiring precision, speed, and rigidity, including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
