71900 ACE/P4ADBA
71900 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
71900 ACE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.018 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
11
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
702 lbf
Radial static load rating
338 lbf
Limiting speed
165 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
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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
71900 ACE/P4ADBA Bearing Product Overview & Core Advantages
The 71900 ACE/P4ADBA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. This metric bearing features a duplex back-to-back (DB) arrangement with an extra light preload (Class A), providing superior system rigidity and minimal runout. Its key advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high precision, making it an ideal choice for high-performance spindles and precision machinery where stability and accuracy are paramount.
71900 ACE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 71900 ACE/P4ADBA is decoded as follows:
- 71900: Denotes the bearing series and size (10mm bore, 22mm OD).
- ACE: Indicates a 25° contact angle and specific internal design optimizations for high-speed operation.
- P4A: Specifies the tolerance class, representing very high precision levels for dimensional and running accuracy.
- DB: Signifies the bearing is supplied as a matched set in a Duplex Back-to-Back arrangement, which increases rigidity and moment load capacity.
- A: Denotes the Extra Light preload class applied to the matched set, minimizing friction and heat generation at high speeds.
71900 ACE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The duplex back-to-back (DB) arrangement creates a pre-stressed system that significantly enhances rigidity, providing stable support for shafts and reducing deflection under load.
- Superior Precision: Manufactured to P4A tolerance class, this bearing ensures minimal dimensional variation and exceptional running accuracy, which is critical for applications like machine tool spindles.
- High-Speed Capability: The combination of a 25° contact angle, a lightweight phenolic resin cage, and an extra light preload enables very high limiting speeds (up to 165,000 rpm) with reduced centrifugal forces and operating temperatures.
- Optimized Load Capacity: The angular contact design is engineered to efficiently support combined radial and axial loads, making it suitable for complex loading conditions.
- Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and long service life under demanding operating conditions.
71900 ACE/P4ADBA Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Dental and Medical Handpiece Drives
- Aerospace Instrumentation
- High-Speed Robotic Drives
