S71911 CDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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S71911 CDGC/P4A Bearing Product Overview & Core Advantages
The S71911 CDGC/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single row bearing with a 15° contact angle and P4A tolerance class, it delivers superior running accuracy and rigidity. Its core advantages include high-speed capability up to 34,000 rpm, the ability to accommodate combined radial and axial loads, and universal matchability (SU), allowing for flexible mounting configurations in preloaded sets to achieve optimal system stiffness.
S71911 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S: Denotes a bearing with a super-precision tolerance class.
- 7: Identifies the bearing type as Angular Contact.
- 1911: Specifies the size series (19) and bore diameter (11*5 = 55 mm).
- CD: Indicates a Moderate (Class C) preload applied to the bearing.
- GC: Signifies the use of a Phenolic (resin) cage, which is lightweight and suitable for high speeds.
- P4A: Defines the tolerance class, specifying extremely tight dimensional and running accuracy standards superior to ABEC 7.
S71911 CDGC/P4A Bearing Structural Features & Performance Benefits
High-Speed Performance: The combination of the lightweight phenolic cage and optimized internal geometry enables stable operation at the high limiting speed of 34,000 rpm.
High Rigidity & Load Capacity: The 15° contact angle and Moderate (C) preload provide high axial and radial rigidity, effectively handling combined loads. With a dynamic load rating of 4388 lbf and a static load rating of 3285 lbf, it offers reliable performance under demanding conditions.
Precision & Accuracy: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and vibration for ultra-precise applications.
Universal Matching (SU): This feature allows bearings to be mounted in either a face-to-face or back-to-back arrangement, providing design flexibility to create a stiff, preloaded bearing set from individual, universally matchable units.
S71911 CDGC/P4A Bearing Typical Application Areas
The S71911 CDGC/P4A is ideally suited for high-performance machinery where precision and speed are critical. Key application areas include:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-frequency Spindles in PCB drilling and routing machines
- Precision Robotic Drives and actuators
- High-speed Medical Equipment and dental handpieces
- Aerospace instrumentation and auxiliary systems
