S71907 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S71907 CE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.13 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
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2812 lbf
Radial static load rating
2092 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Grease
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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S71907 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S71907 CE/HCP4ADBA is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and rotational accuracy. This matched back-to-back (DB) arrangement enables the bearing to withstand combined radial and axial loads from both directions simultaneously. Manufactured to ABEC 7 / P4A tolerance class with a 15° contact angle and ceramic balls, it delivers superior high-speed performance, reduced heat generation, and extended service life in compact, high-reliability systems.
S71907 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71907 | Bearing series and size designation (35mm bore, 55mm OD, 20mm width) |
| CE | Ceramic balls (Silicon Nitride), offering lower density, higher stiffness, and superior performance at high speeds |
| HC | High-Grade Phenolic Resin Cage, providing excellent strength-to-weight ratio and guidance at high rotational speeds |
| P4A | Ultra-Precision Tolerance Class (equivalent to ABEC 7), ensuring minimal runout and vibration for critical applications |
| DB | Duplex Back-to-Back mounting arrangement, providing high moment rigidity and preload |
| A | Extra Light Preload, optimized for minimal friction and high-speed operation |
S71907 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The duplex back-to-back (DB) configuration creates a wide, rigid support system capable of handling significant combined radial and thrust loads and resisting overturning moments, making it ideal for precision spindles.
- Superior High-Speed Performance: The combination of ceramic balls (Si3N4) and a lightweight phenolic resin cage (HC) reduces centrifugal forces and inertial mass, enabling a high limiting speed of 56,000 rpm with minimal heat generation.
- Precision and Accuracy: Manufactured to P4A tolerance class with a consistent 15° contact angle, this bearing ensures extremely low runout and smooth, quiet operation, which is critical for achieving high surface finishes and positional accuracy.
- Long-Term Reliability: The bearing is pre-lubricated with grease and features sealed construction, protecting against contamination and providing maintenance-free operation within its specified temperature range of -30°C to 110°C.
S71907 CE/HCP4ADBA Bearing Typical Application Areas
This high-precision duplex bearing is engineered for advanced machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and jig boring machines.
- Precision Grinding Spindles: Where minimal runout and thermal stability are required.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Advanced Robotic Systems: Particularly in high-accuracy rotary joints and arm assemblies.
- Medical and Dental Equipment: Such as high-speed handpieces and scanner rotors.
