KF140AR0
3/4" Constant Section Bearings
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Part No.
Part No.
KF140AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
5.76 lbs
Tolerance class
ABEC-1
ISO radial rating
10523 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
14"
Bore diameter tolerance
-0.0016"– 0"
Outside diameter
15.5"
Outside diameter tolerance
-0.0016"– 0"
Width
0.75"
Width tolerance
+.000 –.010"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
14.555"
Outer Ring Dimensions
Outer ring large-side face inner diameter
15.102"
Outer ring small-side face inner diameter
14.945"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
7043 lbf
Radial static load rating
19790 lbf
Axial static load rating
17950 lbf
Static load moment
57140 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:
$ 659.89
/ each
In Stock
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KF140AR0 Bearing Product Overview & Core Advantages
The KF140AR0 is a thin-section angular contact ball bearing designed for applications requiring high precision and space optimization. This single-row bearing excels at handling combined loads, supporting significant radial forces alongside thrust loads in one direction due to its defined 30° contact angle. Manufactured to ABEC-1 precision tolerances, it offers reliable performance in compact envelopes, making it ideal for high-rigidity systems where weight and space are critical constraints.
KF140AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KF | Indicates the Reali-Slim thin-section bearing series. |
| 140 | Specifies the bore diameter of 14 inches. |
| A | Denotes the 30° contact angle, optimized for handling high axial loads. |
| R0 | Specifies the standard radial internal clearance (0.0000 – 0.0005"). |
KF140AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row angular contact design with a 30° contact angle provides excellent rigidity and is engineered to support high radial dynamic load ratings (7043 lbf) and substantial axial static load ratings (17950 lbf).
- Precision Engineering: Built to ABEC-1 tolerance class with tight dimensional control on the bore, outside diameter, and width, ensuring consistent performance and ease of integration into precision assemblies.
- Durable Construction: Features rings and balls made from Chrome Steel for high wear resistance and a brass cage for stability and smooth operation at moderate speeds.
- Optimized for Compact Design: As part of the Reali-Slim series, it offers a large diameter in a very thin cross-section (0.75" width), maximizing performance in space-limited applications.
KF140AR0 Bearing Typical Application Areas
This bearing is suited for applications requiring a large diameter, slim profile, and the ability to handle combined loads. Common uses include:
- Robotics (Robotic arms and joints)
- Aerospace & Defense Systems (Gimbals, radar platforms)
- Medical Equipment (CT scanners, rotating assemblies)
- Semiconductor Manufacturing Equipment
- Precision Rotary Tables
