7019 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7019 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
2.42 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
48 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
29925 lbf
Radial static load rating
36000 lbf
Limiting speed
15 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
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 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7019 CD/P4ADBC is a duplex back-to-back angular contact ball bearing designed for applications requiring exceptional precision and rigidity. This P4A tolerance class bearing delivers superior rotational accuracy and is preloaded for high rigidity and minimal axial/radial deflection under load. Its configuration is optimized to handle combined loads (radial and axial) simultaneously, making it ideal for high-precision spindles and machinery where stability is critical. The phenolic cage and precision-ground chrome steel components ensure reliable performance at high speeds.
7019 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7019 CD/P4ADBC breaks down as follows:
- 7019: Basic bearing series, indicating a 95mm bore, 145mm OD, and 48mm width.
- C: Represents a 15° contact angle, optimized for handling combined loads.
- D: Indicates a Moderate / Class C preload for enhanced rigidity.
- P4A: Denotes an ultra-precision tolerance class with exceptionally tight dimensional and running accuracy.
- DB: Specifies a Duplex Back-to-Back arrangement, providing high moment rigidity.
7019 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, crucial for precision machining applications.
- Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions.
- Precision Performance: Manufactured to P4A tolerance standards, it ensures minimal runout and vibration for applications demanding the highest levels of accuracy.
- High-Speed Capability: The phenolic cage provides excellent strength-to-weight ratio and smooth operation at the specified limiting speed of 15,000 rpm.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, this bearing offers consistent performance across a temperature range of -30°C to 110°C.
7019 CD/P4ADBC Bearing Typical Application Areas
The 7019 CD/P4ADBC is specifically engineered for high-precision applications including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Gearboxes: Industrial transmission systems requiring minimal deflection
- Robotic Arms & Automation: Joints and positioning systems demanding high rigidity
- Medical Equipment: High-speed dental handpieces and surgical tools
- Aerospace Components: Guidance systems and precision actuators
