S71909 ACDTP/P4B
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71909 ACDTP/P4B
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.007mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
23
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2790 lbf
Radial static load rating
2025 lbf
Limiting speed
17 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 424.18
/ each
In Stock
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S71909 ACDTP/P4B Bearing Product Overview & Core Advantages
The S71909 ACDTP/P4B is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing is distinguished by its 25° contact angle and is supplied with a preload, ensuring minimal axial and radial play for superior system stability. Its P4 (ABEC-7) tolerance class guarantees ultra-precise running characteristics, making it an ideal solution for high-speed spindles and other precision machinery where high rigidity and excellent high-speed performance are paramount.
S71909 ACDTP/P4B Bearing Model Code Explained, Specifications & Naming Convention
The model number S71909 ACDTP/P4B provides detailed technical specifications through its suffixes:
- S: Denotes a bearing with a super-precision tolerance level.
- 7: Indicates the angular contact bearing type.
- 1909: Specifies the bore diameter (45mm) and series.
- AC: Stands for a 25° contact angle.
- DT: Signifies a matched pair of bearings in a tandem arrangement (despite being a single unit in this specification, this code reflects its typical application pairing).
- P: Indicates the presence of a preload for enhanced rigidity.
- P4B: Defines the tolerance class P4 (ABEC-7) and likely includes specific internal design enhancements.
S71909 ACDTP/P4B Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle and an applied preload significantly increases system stiffness, effectively resisting deflection under combined loads (radial and axial). The P4 tolerance class ensures minimal runout and vibration.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 17,000 rpm. This makes it a premier choice for high-speed applications.
- Superior Load Capacity: Designed to handle significant combined loads, with a dynamic load rating of 2790 lbf and a static load rating of 2025 lbf. The angular contact design is particularly effective at sustaining thrust loads.
- Sealed and Lubricated for Life: As a sealed bearing pre-filled with high-performance grease, it is protected from contamination and is lubricated for life under normal operating conditions within its specified temperature range of -30°C to 110°C.
S71909 ACDTP/P4B Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and other high-precision metalworking equipment.
- High-Speed Motors and Spindles: In applications where rotational speeds are critical, such as in PCB drilling and routing.
- Precision Instrumentation: Used in medical devices, optical scanners, and measuring equipment.
- Robotics: For high-accuracy joints and arm assemblies requiring minimal backlash and high rigidity.
