KA040XP1
1/4" Constant Section Bearings
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Part No.
Part No.
KA040XP1
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.19 lbs
Tolerance class
ABEC 1
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
4"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
4.5"
Outside diameter tolerance
-0.0006"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Inner Ring Dimensions
Shoulder diameter inner ring
4.186"
Outer Ring Dimensions
Outer ring small-side face inner diameter
4.314"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
756 lbf
Radial static load rating
1290 lbf
Axial dynamic load rating
1210 lbf
Axial static load rating
3220 lbf
Dynamic load moment
1205 lbf
Static load moment
2740 lbf
Rated load moment
1205 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:
$ 52.35
/ each
In Stock
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KA040XP1 Bearing Product Overview & Core Advantages
The KA040XP1 is a high-performance thin section bearing engineered for applications demanding compact design and high precision. As a Four Point Contact ball bearing, it excels at simultaneously handling combined loads—significant radial, axial, and moment loads—within an extremely slim cross-section. Its inch series sizing (4" bore) and ABEC 1 precision make it an ideal, cost-effective solution for space-constrained, high-rigidity systems requiring reliable operation.
KA040XP1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| KA | Reali-Slim® Open Bearing Series | Denotes the thin-section, open construction family |
| 040 | Bore Diameter: 4 inch | Standard inch sizing for compatibility |
| X | Four Point Contact Design | Enables support for combined radial, axial, and moment loads |
| P | ABEC 1 Precision | Provides standard precision for smooth, reliable operation |
| 1 | Light Preload / Specific Internal Clearance | Optimizes bearing rigidity and reduces deflection under load |
KA040XP1 Bearing Structural Features & Performance Benefits
- Four Point Contact & High Rigidity: The unique raceway design allows a single bearing row to support substantial radial, axial, and moment loads simultaneously, providing high system rigidity and simplifying assembly by replacing more complex bearing arrangements.
- Superior Load Capacity: With a radial dynamic load rating of 756 lbf and a static load moment rating of 2740 ft-lbf, this bearing is built to handle demanding combined load scenarios in compact spaces.
- Thin-Section Design: The extremely slim 0.25" width and 4.5" OD maximize space efficiency and reduce the overall weight (0.19 lbs) of the machinery, which is critical in robotics and aerospace.
- Premium Materials & Construction: Manufactured from Chrome Steel rings and balls with a Brass cage, the bearing ensures durability, smooth operation, and extended service life under standard operating conditions.
KA040XP1 Bearing Typical Application Areas
- Robotics: Rotary joints, robot arms, and gimbal systems where compact design and moment load capacity are critical.
- Aerospace & Defense: Actuation systems, radar platforms, and guidance systems requiring lightweight and high-precision components.
- Medical Equipment: Imaging devices (CT/MRI scanners) and surgical robots that demand smooth motion and high reliability.
- Industrial Automation: Rotary tables, indexing heads, and precision gearboxes where combined loads are present within limited spaces.
