KA045AR0
1/4" Constant Section Bearings
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Part No.
Part No.
KA045AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.21 lbs
Tolerance class
ABEC-1
ISO radial rating
1410 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4.5"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
5"
Outside diameter tolerance
-0.0008"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.686"
Outer Ring Dimensions
Outer ring large-side face inner diameter
4.865"
Outer ring small-side face inner diameter
4.814"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
637 lbf
Radial static load rating
1660 lbf
Axial static load rating
1580 lbf
Static load moment
4810 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:
$ 108.99
/ each
In Stock
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KA045AR0 Bearing Product Overview & Core Advantages
The KA045AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional space efficiency and high rotational accuracy. Engineered with a 30° contact angle, this single-row bearing is optimized to support significant combined loads, handling both radial and axial forces simultaneously. Its ABEC-1 precision class and chrome steel construction ensure reliable performance in high-speed and high-rigidity scenarios, making it an ideal component for compact, weight-sensitive assemblies.
KA045AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KA045 | Bearing series designation for thin section angular contact bearings with a 4.5" bore diameter. |
| A | Indicates Angular Contact design with a 30° contact angle. |
| R0 | Specifies the radial internal clearance group (0.0000 – 0.0005"). |
KA045AR0 Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The single-row angular contact design with a 30° contact angle provides high rigidity and excellent capability for handling combined radial and axial loads. It offers a radial dynamic load rating of 637 lbf and a static load moment of 4810 lbf.
- Precision & High-Speed Operation: Manufactured to ABEC-1 tolerance standards and featuring a brass cage for stability, this bearing supports smooth, high-speed rotation with minimal vibration.
- Space-Saving & Lightweight Design: As part of the Reali-Slim Open Bearings series, it features an ultra-thin cross-section (0.25" width) and low weight (0.21 lbs), enabling compact machine designs without sacrificing performance.
- Durable Material Construction: Made from chrome steel for both rings and balls, the bearing ensures high wear resistance and long service life under demanding conditions.
KA045AR0 Bearing Typical Application Areas
- Robotics & Automation: Ideal for robotic arm joints, rotary tables, and precision actuators requiring high rigidity and compact dimensions.
- Aerospace & Defense: Used in gimbal systems, radar platforms, and control surface mechanisms where weight savings and precision are critical.
- Medical Equipment: Suitable for CT scanners, surgical robots, and imaging devices that demand smooth, accurate motion in confined spaces.
- Semiconductor Manufacturing: Applied in wafer handling robots and precision positioning stages that operate at high speeds with minimal deflection.
