S71915 CB/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71915 CB/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.76 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
6.35 mm
Ball quantity
34
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5152 lbf
Radial static load rating
5962 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 CB/P4ADBA Bearing Product Overview & Core Advantages
The S71915 CB/P4ADBA is a metric precision angular contact ball bearing designed for exceptional performance in demanding applications. This duplex back-to-back (DB) matched set delivers superior high rigidity and can accommodate combined loads, including significant radial and bidirectional axial loads. Manufactured to the exacting P4A tolerance class, it ensures outstanding running accuracy, making it ideal for high-speed spindles and other precision machinery requiring maximum reliability and dimensional stability in a compact design.
S71915 CB/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number S71915 CB/P4ADBA is decoded as follows:
- S: Denotes a bearing with a 15° contact angle.
- 71915: The basic bearing series and size designation (75mm bore, 105mm OD, 32mm width).
- CB: Indicates a specific internal clearance and preload category for the matched set.
- P4A: Specifies the tolerance class, denoting very high precision for bore diameter, outside diameter, and width.
- DB: Stands for Duplex Back-to-Back arrangement, which provides high moment rigidity.
- A: Indicates an Extra light preload on the matched set.
S71915 CB/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement of two bearings creates a rigid support system that effectively resists moment loads and accommodates heavy combined radial and axial loads from both directions.
- Precision & High-Speed Performance: Built to P4A tolerance class for exceptional dimensional accuracy and smooth operation. The phenolic resin cage is lightweight and robust, contributing to stable operation at high rotational speeds, with a limiting speed of 28,000 rpm.
- Premium Materials & Construction: Rings and balls made from high-grade chrome steel ensure high durability and long service life under demanding conditions.
- Optimized for Precision Applications: The 15° contact angle and extra light preload are optimized for applications requiring high precision and minimal friction.
S71915 CB/P4ADBA Bearing Typical Application Areas
This high-precision bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Motors
- Other precision equipment requiring high rigidity, high-speed capability, and exceptional running accuracy.
