S71909 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71909 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
23
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
4275 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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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S71909 CD/P4ADGB Bearing Product Overview & Core Advantages
The S71909 CD/P4ADGB is a super-precision angular contact ball bearing designed for the most demanding applications. As a universal matchable (SU) bearing supplied in a light preload (Class B) matched set, it delivers exceptional running accuracy and system rigidity. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads in both directions—simultaneously. Manufactured to an ultra-precise P4A tolerance class and featuring a sealed design with grease lubrication, this bearing is engineered for high-speed operation, long service life, and reliable performance in high-precision machinery.
S71909 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model number S71909 CD/P4ADGB provides a detailed technical specification. Below is a breakdown of its components:
- S: Denotes a super-precision bearing.
- 7: Indicates an angular contact design.
- 1909: Specifies the size series (19) and bore diameter (09 x 5 = 45 mm).
- CD: Signifies a universal matchable (SU) bearing pair with a 15° contact angle, arranged in a back-to-back (DB) or face-to-face (DF) configuration.
- P4A: Defines the tolerance class, which is stricter than ABEC 7, ensuring extremely tight dimensional and running accuracy.
- DGB: Indicates a sealed bearing, pre-filled with grease lubrication.
S71909 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row design, combined with the universal matching and preload, provides a highly rigid bearing arrangement capable of supporting high combined loads and moments.
- Super-Precision Performance: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy.
- Optimized High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling a high limiting speed of 46,000 rpm. The 15° contact angle is optimized for high-speed performance.
- Maintenance-Free Operation: The integral seals and factory-applied grease lubrication protect against contamination and provide long-term, maintenance-free operation within a specified temperature range of -30°C to 110°C.
S71909 CD/P4ADGB Bearing Typical Application Areas
This super-precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles for CNC milling and grinding machines
- High-frequency Spindles in PCB drilling and routing equipment
- Precision Robotic Arm Joints and rotary actuators
- High-speed Compressors and pumps
- Advanced Medical and Laboratory Equipment
