S71906 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71906 CDGA/P4A Bearing Product Overview & Core Advantages
The S71906 CDGA/P4A is a super-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. Operating under the stringent P4A tolerance class, this bearing is designed to handle combined loads (radial and axial) simultaneously with high reliability. Its compact design, featuring a 9mm width, makes it ideal for space-constrained, high-speed spindles. The combination of a phenolic cage and pre-lubrication enables superior high-speed performance and operational stability, establishing it as a top-tier solution for the most demanding precision machinery.
S71906 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
- S7: High-precision bearing series with a 15° contact angle.
- 19: Denotes the bore diameter code (30 mm).
- 06: Indicates the dimension series (extra light, 9mm width).
- C: Specifies a 15° nominal contact angle.
- DG: Stands for a Universal Matchable (SU) bearing, supplied as part of a matched set of 3 bearings for optimized preload and rigidity.
- A: Indicates an Extra light preload class.
- P4A: The tolerance class, signifying extremely tight dimensional and running accuracy standards superior to ABEC 7.
S71906 CDGA/P4A Bearing Structural Features & Performance Benefits
The S71906 CDGA/P4A delivers outstanding performance through its optimized construction. The phenolic resin cage contributes to low friction, reduced weight, and excellent acceleration characteristics, which are critical for achieving the high limiting speed of 100,500 rpm. The 15° contact angle provides an optimal balance between radial load capacity and axial load capacity in one direction. Being part of a universally matchable set allows for flexible mounting arrangements (DB, DF, DT) to achieve the required system rigidity and preload. Manufactured to P4A tolerances, it ensures minimal runout and vibration, which is paramount for maintaining machining accuracy and surface finish quality.
S71906 CDGA/P4A Bearing Typical Application Areas
This bearing is predominantly used in high-performance applications where precision and speed are non-negotiable. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing equipment.
- High-Frequency Motors: Spindles for aerospace and medical device manufacturing.
- Robotics: High-accuracy rotary joints and arm assemblies.
