KA047AR0
1/4" Constant Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
KA047AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.22 lbs
Tolerance class
ABEC-1
ISO radial rating
1437 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4.75"
Bore diameter tolerance
-0.0010"– 0"
Outside diameter
5.25"
Outside diameter tolerance
-0.0008"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.936"
Outer Ring Dimensions
Outer ring large-side face inner diameter
5.115"
Outer ring small-side face inner diameter
5.064"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
657 lbf
Radial static load rating
1750 lbf
Axial static load rating
1640 lbf
Static load moment
5060 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 110.65
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
KA047AR0 Bearing Product Overview & Core Advantages
The KA047AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional rigidity and precise motion control. Engineered with a 30° contact angle, this single-row bearing efficiently handles combined loads (simultaneous radial and axial forces). Its ultra-slim 0.25" cross-section relative to its large 4.75" bore makes it ideal for space-constrained, high-performance machinery requiring ABEC-1 precision and reliable operation.
KA047AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KA047 | Indicates the specific bearing series and size designation within the Reali-Slim® Open series. |
| A | Signifies the 30° contact angle, optimized for high axial load capacity and rigidity. |
| R0 | Denotes a standard radial internal clearance group. |
| (Open) | The bearing is supplied without seals or shields, allowing for custom lubrication schemes and maximum speed capability. |
KA047AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row design with a 30° contact angle provides superior stiffness and is engineered to support significant combined radial and axial static loads (1750 lbf radial, 1640 lbf axial). This makes it exceptionally stable under complex loading conditions.
- Precision Engineering: Manufactured to ABEC-1 tolerance class with tight dimensional control on the bore, outside diameter, and width. This ensures smooth, precise rotation and accurate positioning in high-performance assemblies.
- Optimized Component Materials: Features rings and balls made from high-grade Chrome Steel for durability and fatigue resistance. The brass cage ensures reliable ball guidance and is suitable for high-speed applications.
- Space-Saving Design: As part of the Reali-Slim series, it offers a large bore diameter within a minimal cross-section, enabling compact and lightweight system designs without sacrificing performance.
KA047AR0 Bearing Typical Application Areas
This bearing is ideally suited for precision applications where space, weight, and accuracy are critical. Key industries and equipment include:
- Robotics: Joint and arm actuators requiring high moment stiffness.
- Aerospace & Defense: Gimbals, radar systems, and control surface actuators.
- Semiconductor Manufacturing: Precision stages and wafer handling robots.
- Medical Equipment: MRI and CT scanner gantries, surgical robot arms.
- Industrial Automation: Rotary tables, indexing heads, and high-precision gearboxes.
