S71907 CE/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71907 CE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.15 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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S71907 CE/P4ADBB Bearing Product Overview & Core Advantages
The S71907 CE/P4ADBB is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a matched duplex pair in a back-to-back (DB) arrangement, it is preloaded to deliver superior system stiffness and outstanding running accuracy. This configuration is engineered to handle combined loads (radial and axial) simultaneously, making it an ideal choice for high-speed spindles and other precision machinery where minimal deflection and high positional accuracy are critical.
S71907 CE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1907 | Bore size code (35 mm) and series dimension. |
| CE | Internal design featuring a 15° contact angle and optimized internal geometry. |
| P4A | Indicates a super-precision tolerance class (equivalent to ABEC 7 / ISO P4), ensuring extremely tight dimensional and running accuracy. |
| DBB | Specifies the bearing is supplied as a Duplex Back-to-Back matched set with Light preload (Class B). |
S71907 CE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Running Accuracy: The duplex back-to-back arrangement and light preload create a highly rigid bearing system that effectively resists moment loads and minimizes shaft deflection, ensuring exceptional running accuracy essential for precision applications.
- Superior Load Capacity: The 15° contact angle design provides excellent capability to handle combined radial and axial loads. The matched set configuration distributes loads evenly across both bearings, enhancing overall load-carrying capacity and service life.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel balls and raceways contribute to low friction and heat generation, enabling high limiting speeds of up to 56,000 rpm.
- Sealed & Pre-Lubricated: The bearing is sealed to protect against contamination and is pre-lubricated with grease, offering a maintenance-free solution within its specified temperature range of -30°C to 110°C.
S71907 CE/P4ADBB Bearing Typical Application Areas
This super-precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Spindles
- Other precision rotary equipment requiring maximum rigidity and speed.
