S71907 ACEGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S71907 ACEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.074 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm 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°C to 110 °C
Radial dynamic load rating
1638 lbf
Radial static load rating
990 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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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S71907 ACEGA/P4A Bearing Product Overview & Core Advantages
The S71907 ACEGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. As a single bearing from a universally matchable (SU) set, it excels in handling combined loads—significant radial loads and axial loads in one direction. Its Extra Light (Class A) preload ensures minimal runout and high system rigidity, making it ideal for high-speed spindles and precision instruments. The sealed design with phenolic cage and grease lubrication contributes to its robust performance in a wide temperature range.
S71907 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACEGA | Contact Angle 25°, Universal Matchable (SU) set, Extra Light (Class A) preload | Optimized for high rigidity and precise axial positioning. The universal matchability simplifies mounting of preloaded pairs. |
| P4A | Tolerance Class P4A (High Precision) | Superior running accuracy, reduced vibration, and enhanced performance in high-speed applications. |
S71907 ACEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and Extra Light preload provide high system stiffness, enabling the bearing to effectively support combined radial and axial loads.
- High-Speed Performance: The lightweight phenolic resin cage ensures stability and low friction at high rotational speeds, supporting a limiting speed of 56,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, guaranteeing smooth and precise operation.
- Sealed & Lubricated for Life: The integral seals retain the high-performance grease, protecting against contamination and providing maintenance-free operation within the specified temperature range.
S71907 ACEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Precision Measuring Instruments
- Robotic Arm Joints
