71819 ACDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
71819 ACDGC/P4
Basic Information
System of measurement
Metric
Weight
0.29 kg
Tolerance class
P4
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
95 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
120 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
32
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4680 lbf
Radial static load rating
5738 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
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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71819 ACDGC/P4 Bearing Product Overview & Core Advantages
The 71819 ACDGC/P4 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4 tolerance class, this bearing is optimized to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Its compact cross-section, with a 13 mm width, makes it ideal for space-constrained, high-performance assemblies. The moderate preload (Class C) ensures stable rotational accuracy and reduced vibration, making it a superior choice for machine tool spindles and other precision machinery where high rigidity and reliable performance are critical.
71819 ACDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Duplex arrangement designation (two bearings used as a set). |
| GC | Specific internal clearance and preload group for moderate preload (Class C). |
| P4 | High precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
71819 ACDGC/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle and duplex mounting capability provides high rigidity, enabling the bearing to support substantial combined radial and axial loads.
- Precision Performance: Manufactured to P4 tolerance standards with a bore and outside diameter tolerance of -0.004mm to 0, ensuring minimal runout and superior rotational accuracy for high-speed applications.
- Optimized High-Speed Operation: The lightweight phenolic resin cage and precision-ground chrome steel components contribute to smooth operation and a high limiting speed of 15,000 rpm.
- Universal Matching Design: Designated as Universal Matchable (SU), these bearings can be universally paired in any combination to form duplex sets (DB, DF, DT), offering flexibility in preload and stiffness configuration.
- Superior Material & Construction: Made from high-grade chrome steel for rings and balls, ensuring durability and long service life under demanding conditions.
71819 ACDGC/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- High-Speed Machining Centers: Applications where high rotational speeds and minimal deflection are critical.
- Precision Robotics: Joints and arm assemblies demanding high stiffness and repeatable positioning.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
- Aerospace Actuators & Control Systems: Components requiring reliable performance under combined loads and precise motion control.
