S71907 ACE/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71907 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.074 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.007mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
19
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1638 lbf
Radial static load rating
990 lbf
Limiting speed
32 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:
$ 335.11
/ each
In Stock
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S71907 ACE/P4A Bearing Product Overview & Core Advantages
The S71907 ACE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 25° contact angle, it efficiently handles combined radial and axial loads. Manufactured to P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. The bearing comes preloaded and pre-lubricated for immediate installation and optimal performance.
S71907 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71907 | Basic bearing designation (35mm bore, 55mm OD, 10mm width) |
| ACE | Specific internal design with a 25° contact angle and optimized internal geometry |
| P4A | Indicates P4 (ABEC-7) precision tolerance class and specific preload level |
S71907 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row design with a 25° contact angle and P4 precision provides stable, high-rigidity support for spindles, minimizing deflection under load.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads simultaneously, with a dynamic load rating of 1638 lbf and static load rating of 990 lbf.
- Optimized High-Speed Performance: The phenolic resin cage ensures low friction and high strength, contributing to the limiting speed of 32,000 rpm. The pre-lubrication further supports reliable high-speed operation.
- Sealed & Ready-to-Use: As a sealed bearing, it is protected from contamination. The factory-applied lubricant and preload make it a maintenance-free solution for many applications.
S71907 ACE/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (high-speed machining centers, grinding spindles)
- Precision Medical Equipment (dental handpieces, surgical tools)
- High-Frequency Motors and Spindles
- Robotics (precision joints and actuators)
- Optical and Measuring Instruments
