S71910 ACB/HCP4ATBTB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71910 ACB/HCP4ATBTB
Basic Information
System of measurement
Metric
Weight
0.4 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
50 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
29
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3510 lbf
Radial static load rating
4050 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
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
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S71910 ACB/HCP4ATBTB Bearing Product Overview & Core Advantages
The S71910 ACB/HCP4ATBTB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and speed performance. This matched set bearing features a Triplex Back-to-Back (TBT) arrangement of three individual bearings, providing superior stability and the ability to handle significant combined loads (radial and axial). Manufactured to P4A tolerance class with a 25° contact angle and ceramic balls, it delivers outstanding operational accuracy, high limiting speed, and long service life in compact installations.
S71910 ACB/HCP4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71910 | Bearing series and size designation (10mm bore x 72mm OD x 36mm width). |
| ACB | Angular Contact Bearing with a 25° contact angle. |
| HC | Hybrid Ceramic: Features ceramic balls for reduced friction, higher speed, and longer life. |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration. |
| TBT | Triplex Back-to-Back: A preloaded set of three bearings arranged back-to-back for maximum rigidity and moment load capacity. |
S71910 ACB/HCP4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The Triplex Back-to-Back (TBT) arrangement creates an extremely stiff bearing system, capable of withstanding heavy combined loads and moment loads, making it ideal for applications where shaft deflection must be minimized.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a phenolic cage enables a high limiting speed of 34,000 rpm. This design minimizes friction and heat generation.
- High Precision Operation: Manufactured to a P4A tolerance class, this bearing ensures ultra-precise rotational accuracy and low noise/vibration levels, which is critical for high-performance machinery.
- Long-Term Reliability: The sealed design and pre-applied grease lubrication protect against contamination and provide maintenance-free operation within the specified temperature range (-30°C to 110°C).
S71910 ACB/HCP4ATBTB Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Spindles: PCB drilling and routing machines.
- Medical Equipment: Dental handpieces and high-speed centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation equipment.
