S71915 CE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71915 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.69 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
75 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
105 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8190 lbf
Radial static load rating
7650 lbf
Limiting speed
28 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S71915 CE/P4ADBA Bearing Product Overview & Core Advantages
The S71915 CE/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. This back-to-back (DB) matched set is preloaded to Extra light / Class A standards, ensuring minimal axial and radial play for superior positional stability. Engineered to handle combined loads (simultaneous radial and axial loads), it is ideal for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount. The sealed design with phenolic cage contributes to its high-speed performance and long service life.
S71915 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CE | Specific internal design for optimized performance and preload. | Ensures consistent performance and high running accuracy in the matched set. |
| P4A | High precision tolerance class (superior to ABEC 7). | Provides extremely tight dimensional and running accuracy for demanding applications. |
| DB | Duplex Back-to-Back arrangement. | Enhances moment load capacity and provides high operational rigidity. |
S71915 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement and 15° contact angle create a rigid bearing system capable of withstanding significant combined loads and moment loads, making it exceptionally stable under complex operating conditions.
- High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the sealed design and grease lubrication are optimized for a high limiting speed of 28,000 rpm, ensuring smooth operation at elevated rotational velocities.
- Precision Engineering: Manufactured to a P4A tolerance class with extremely tight bore, outside diameter, and width tolerances, this bearing guarantees minimal runout and vibration, which is critical for precision applications.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue life and wear resistance. The integral seals protect against contamination, enhancing reliability.
S71915 CE/P4ADBA Bearing Typical Application Areas
This precision duplex angular contact ball bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: in PCB drilling, dental machining, and other high-accuracy manufacturing equipment.
- High-Frequency Motors and Robotic Drives requiring high rigidity and speed.
- Medical Equipment and Optical Instrumentation where smooth, precise rotation is mandatory.
