KC042XP0
3/8" Constant Section Bearings
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Part No.
Part No.
KC042XP0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.47 lbs
Tolerance class
ABEC-1
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
4.25"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
5"
Outside diameter tolerance
-0.0008"– 0"
Width
0.375"
Width tolerance
+.000 –.005"
Inner Ring Dimensions
Shoulder diameter inner ring
4.527"
Outer Ring Dimensions
Outer ring small-side face inner diameter
4.723"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1464 lbf
Radial static load rating
2220 lbf
Axial dynamic load rating
2290 lbf
Axial static load rating
5560 lbf
Dynamic load moment
2541 lbf
Static load moment
5140 lbf
Rated load moment
2 ft-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:
$ 105.66
/ each
In Stock
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KC042XP0 Bearing Product Overview & Core Advantages
The KC042XP0 is a high-performance Four Point Contact Ball Bearing from the Reali-Slim Open Bearings series. Engineered with an ultra-thin cross-section, this bearing delivers exceptional load capacity in a compact, space-saving design. Its defining characteristic is its ability to simultaneously support combined radial and axial loads from any direction, making it an ideal solution for applications requiring high precision and rigidity where space and weight are critical constraints. Manufactured to ABEC-1 precision tolerances, it ensures reliable performance in demanding operational environments.
KC042XP0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KC042 | Specifies the bearing series and size designation for the Reali-Slim open type. |
| XP0 | Indicates specific internal design features, including the Four Point Contact geometry and Open (unsealed) construction. |
KC042XP0 Bearing Structural Features & Performance Benefits
- Four Point Contact Design: The optimized raceway geometry allows a single bearing to handle significant combined radial and axial loads as well as moment loads, simplifying assembly and reducing the need for multiple bearing arrangements.
- High Rigidity & Load Capacity: Despite its thin section, the bearing offers a high static load moment rating of 5140 lbf-in and a dynamic load moment of 2541 lbf-in, providing stable and precise support for rotating components.
- Precision Engineering: Built to ABEC-1 tolerance class with a controlled radial internal clearance (0.0000 – 0.0005"), ensuring smooth operation and minimal runout for high-accuracy applications.
- Premium Materials: Constructed from Chrome Steel rings and balls with a Brass cage for durability, corrosion resistance, and reliable performance across a wide temperature range (-30°C to 110°C).
- Space & Weight Optimization: The ultra-thin design (0.375" width) with a large bore (4.25") and small O.D. (5") maximizes the available design space while minimizing overall system weight (0.47 lbs).
KC042XP0 Bearing Typical Application Areas
This bearing is ideally suited for compact, high-performance machinery where its thin-section and high moment load capacity are critical. Key industries and equipment include:
- Robotics: Joints, rotary actuators, and precision arms.
- Aerospace & Defense: Gimbal systems, radar platforms, and control surfaces.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Medical Equipment: CT scanner gantries and surgical robot joints.
- Industrial Automation: Rotary tables, indexing heads, and CNC rotary units.
