KD040XP3K
1/2" Constant Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
KD040XP3K
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.78 lbs
Tolerance class
ABEC 3F
Seal type
Open
For load direction
Four Point Contact
Main Dimensions
Bore diameter
4"
Bore diameter tolerance
-0.0008"– 0"
Outside diameter
5"
Outside diameter tolerance
-0.0006"– 0"
Width
0.5"
Width tolerance
+.000 –.005"
Inner Ring Dimensions
Shoulder diameter inner ring
4.37"
Outer Ring Dimensions
Outer ring small-side face inner diameter
4.63"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
2311 lbf
Radial static load rating
3080 lbf
Axial dynamic load rating
3520 lbf
Axial static load rating
7700 lbf
Dynamic load moment
3901 lbf
Static load moment
6930 lbf
Rated load moment
3 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:
$ 83.81
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
KD040XP3K Bearing Product Overview & Core Advantages
The KD040XP3K is a high-precision thin section bearing designed for applications demanding space optimization without compromising performance. Manufactured to ABEC 3F tolerance standards, this single row, Four Point Contact ball bearing excels at simultaneously handling combined radial and axial loads from any direction. Its open construction allows for versatile lubrication options, making it ideal for high-rigidity and precision positioning systems where compact envelope dimensions are critical.
KD040XP3K Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KD040 | Bore diameter code for 4" |
| XP | Cross section designation (0.5" width) |
| 3 | Flanged outer ring design |
| K | Keyway on outer ring |
KD040XP3K Bearing Structural Features & Performance Benefits
- Four Point Contact Design: Enables the bearing to support significant combined radial and axial loads in a compact, single-row configuration, simplifying assembly and reducing system weight.
- Precision Thin-Section Construction: With a consistent 0.5" cross-section, it minimizes space requirements while maintaining high stiffness and rotational accuracy, crucial for robotic arms and aerospace mechanisms.
- High-Grade Materials: Chrome Steel rings and balls, combined with a Brass cage, ensure durability, smooth operation, and extended service life under dynamic stresses.
- Optimized Load Ratings: A radial dynamic load rating of 2311 lbf and an axial dynamic load rating of 3520 lbf provide reliable performance in demanding applications.
- Pre-Configured for Performance: Features a controlled radial internal clearance and comes lubricated from the factory for immediate installation and operation.
KD040XP3K Bearing Typical Application Areas
- Robotics: Rotary joints and actuator arms where lightweight design and high moment load capacity are essential.
- Aerospace & Defense: Gimbals, radar systems, and flight control surfaces requiring precision and reliability.
- Medical Equipment: Imaging scanners (CT, MRI) and surgical robots demanding smooth, precise motion.
- Industrial Automation: Rotary tables, indexing heads, and CNC rotary axes.
- Optical & Instrumentation Systems: Precision positioning stages and telescope mounts.
