S71906 ACB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S71906 ACB/P4A
Basic Information
System of measurement
Metric
Weight
0.05 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
22
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1040 lbf
Radial static load rating
675 lbf
Limiting speed
36 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:
$ 283.69
/ each
In Stock
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S71906 ACB/P4A Bearing Product Overview & Core Advantages
The S71906 ACB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. This sealed bearing is part of a matched arrangement and is supplied with a preload, ensuring minimal axial and radial play for superior rotational stability. Its compact design, with a 9 mm width, makes it ideal for space-constrained, high-performance assemblies. Engineered to handle combined loads efficiently, it is a premier choice for machine tool spindles and other precision equipment requiring high reliability and long-term performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact bearings. |
| 1906 | Denotes the size series: 19 (light series) with a 06 (30 mm) bore diameter. |
| ACB | Indicates a 25° contact angle and a specific internal design optimized for high rigidity and speed. |
| P4 | Specifies the P4 (ABEC-7) tolerance class, denoting very high running accuracy. |
| A | Identifies the bearing as part of a universally matched set for simplified mounting and optimal performance. |
S71906 ACB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class and supplied with a preload, this bearing delivers exceptional rotational accuracy and stiffness, critical for minimizing deflection under load.
- Superior Load Capacity: The 25° contact angle is engineered to support significant combined radial and axial loads simultaneously, making it robust for demanding applications.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 36,000 rpm. The bearing is pre-lubricated for immediate operation.
- Sealed and Protected: The integral seals effectively retain lubricant and exclude contaminants, enhancing bearing life and enabling maintenance-free operation in many environments.
- Premium Materials: Constructed from chrome steel for rings and balls, ensuring high durability and resistance to wear.
S71906 ACB/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: Where high rotational accuracy and speed are paramount.
- Medical Equipment: Dental handpieces and small, high-speed surgical tools.
- Robotics: Precision joints and arm assemblies requiring high rigidity.
