71916 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
71916 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.64 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
80 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
27
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13320 lbf
Radial static load rating
17550 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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71916 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71916 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universally matchable (SU) bearing is part of a pre-matched set, enabling simplified installation and optimal performance in pairs. Its core advantages include the ability to accommodate combined loads (radial and axial), high rigidity due to its design and P4A super-precision tolerance, and superior high-speed capabilities enabled by its ceramic balls and phenolic cage. It is pre-lubricated for immediate use and operates reliably within a wide temperature range.
71916 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Basic bearing designation indicating size series (719) and bore diameter (16x5=80mm). |
| CD | Indicates a 15° contact angle and that the bearing is part of a universally matchable (SU) pair. When two such bearings are mounted face-to-face or back-to-back, they create a pre-adjusted set. |
| HC | Signifies the use of Hybrid Ceramic components, specifically ceramic balls, which reduce weight, friction, and heat generation, enabling higher speeds. |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. This ensures extremely tight dimensional and running accuracy for applications requiring minimal runout and vibration. |
| DGA | Likely refers to a specific phenolic (Polyamide) cage design and the bearing being pre-lubricated with a high-performance grease suitable for its operational range. |
71916 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperatures, and increases the limiting speed (28,000 rpm). This also enhances durability and service life, especially in contaminated or electrically sensitive environments.
- Precision & Rigidity: Manufactured to P4A tolerance with a 15° contact angle, this bearing provides exceptional running accuracy and high rigidity, which is critical for maintaining position and reducing deflection under load.
- Optimized Cage Design: The lightweight phenolic cage offers excellent guidance for the ceramic balls, contributing to smooth operation, lower friction, and high-speed stability.
- Universal Matchability (SU): This feature allows for simplified mounting of bearing pairs (face-to-face or back-to-back) without the need for selective matching, ensuring pre-defined preload and optimal performance characteristics directly from the manufacturer.
- Pre-lubrication: The bearing is supplied with grease, making it ready for immediate installation and operation, reducing initial setup time and complexity.
71916 CD/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is engineered for the most demanding precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision, rigidity, and speed are paramount.
- Precision Robotics: Arm joints and rotary units requiring high accuracy and responsiveness.
- High-Frequency Machining Spindles: Applications pushing the limits of rotational speed.
- Advanced Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical navigation and control mechanisms.
