S71907 ACD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71907 ACD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.14 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3330 lbf
Radial static load rating
2812 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Grease
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
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71907 ACD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71907 ACD/HCP4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This matched set of two bearings features a 25° contact angle and ceramic balls, enabling superior high-speed capability and rigidity. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for applications where minimal runout and high rotational accuracy are critical. The combination of a phenolic cage and grease lubrication further enhances its performance in high-velocity scenarios.
S71907 ACD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71907 ACD/HCP4ADGA decodes as follows:
- S7: High-precision bearing series with specific design enhancements for stiffness and speed.
- 1907: Standard size designation (Bore: 35mm, OD: 55mm, Width: 20mm).
- ACD: Angular Contact, 25° contact angle, Universal Matchable (SU) design. The "D" indicates a specific internal design for optimal load distribution.
- HCP4ADGA: A composite suffix denoting:
- HC: Hybrid Ceramic balls (Silicon Nitride).
- P4A: Super Precision tolerance class, exceeding ABEC 7 standards.
- DGA: Indicates a specific grease lubrication and sealing specification for high-speed operation.
S71907 ACD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and permits much higher limiting speeds (56,000 rpm) compared to all-steel equivalents. This also enhances durability and provides electrical insulation.
- High Rigidity and Load Capacity: The 25° contact angle and universal matchable (SU) design allow the bearing set to accommodate combined loads (radial and axial) simultaneously. When mounted face-to-face or back-to-back, the set provides high system rigidity and precise shaft positioning.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing to smooth operation and extended service life.
- Precision and Reliability: Manufactured to a P4A super precision tolerance class, this bearing guarantees minimal vibration and exceptional running accuracy, which is paramount in high-precision machinery.
S71907 ACD/HCP4ADGA Bearing Typical Application Areas
This bearing is engineered for the most demanding high-speed and high-precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
