S7019 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7019 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
1.22 kg
Tolerance class
P4A
Seal type
Sealed
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
25 °
Ball & Washer Dimensions
Ball diameter
15.875 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17122 lbf
Radial static load rating
17212 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Grease
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
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In Stock
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S7019 ACDGB/P4A Bearing Product Overview & Core Advantages
The S7019 ACDGB/P4A is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and high rigidity. As a single bearing that is Universal Matchable (SU), it can be paired with an identical bearing to form a precisely preloaded set, enabling it to handle combined loads (radial and axial) simultaneously. Manufactured to the stringent P4A tolerance class, it offers superior running accuracy and is preloaded to Light / Class B, making it ideal for high-speed, high-precision spindles and other demanding machinery.
S7019 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACDGB | Angular Contact Design, specific internal geometry for optimized load distribution. | Provides high rigidity and precise running characteristics. |
| P4A | High-Precision Tolerance Class (superior to ABEC 7). | Ensures minimal runout and vibration for superior performance in precision applications. |
S7019 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust construction enable the bearing to support significant combined loads. The Universal Matchable (SU) design allows for a rigid, preloaded duplex set when mounted face-to-face or back-to-back.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reducing friction and heat generation, which is critical for achieving the high limiting speed of 15,000 rpm. The standard grease lubrication is optimized for this operational range.
- Precision and Longevity: Manufactured from high-grade chrome steel for both rings and balls, and built to P4A tolerances, this bearing guarantees exceptional dimensional stability and extended service life under demanding conditions.
- Sealed and Lubricated for Life: The sealed design protects against contamination, and the bearing is pre-lubricated with grease suitable for a temperature range of -30°C to 110°C, making it a low-maintenance solution.
S7019 ACDGB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace and Defense Instrumentation
