KF040XP0
3/4" Constant Section Bearings
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Part No.
Part No.
KF040XP0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
1.9 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
5.5"
Outside diameter tolerance
-0.0006"– 0"
Width
0.75"
Width tolerance
+.000 –.005"
Inner Ring Dimensions
Shoulder diameter inner ring
4.555"
Outer Ring Dimensions
Outer ring small-side face inner diameter
4.945"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
4665 lbf
Radial static load rating
5360 lbf
Axial dynamic load rating
6830 lbf
Axial static load rating
13400 lbf
Dynamic load moment
8312 lbf
Static load moment
12730 lbf
Rated load moment
8 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:
$ 99.09
/ each
In Stock
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KF040XP0 Bearing Product Overview & Core Advantages
The KF040XP0 is a high-performance Four Point Contact Ball Bearing from the Reali-Slim Open Bearings series. Engineered with an ultra-thin cross-section, this inch-sized bearing delivers exceptional performance in compact spaces. Its defining feature is its ability to simultaneously support significant radial loads, axial loads in both directions, and load moments, making it an ideal, space-saving solution for applications demanding high precision and rigidity.
KF040XP0 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| KF | Series designation for Kaydon® Reali-Slim thin-section bearings. |
| 040 | Indicates a 4.0" bore diameter. |
| X | Denotes an extra-thin cross-section series. |
| P | Specifies a Four Point Contact ball bearing construction. |
| 0 | Indicates an Open (unsealed) design. |
KF040XP0 Bearing Structural Features & Performance Benefits
- Four Point Contact Design: A single-row bearing that functions like a double-row bearing. The raceway geometry allows each ball to make contact at four points, enabling it to handle combined radial, axial, and moment loads efficiently in a very compact envelope.
- High Rigidity & Load Capacity: The robust Chrome Steel construction and optimized geometry provide high stiffness, supporting a radial dynamic load of 4665 lbf and a substantial axial static load of 13400 lbf.
- Precision & Smooth Operation: Manufactured to ABEC-1 tolerance standards with a brass cage for stable, quiet operation at moderate speeds.
- Ultra-Thin Section: With a width of only 0.75", it maximizes space utilization in lightweight, compact machinery without sacrificing performance.
KF040XP0 Bearing Typical Application Areas
This bearing is engineered for applications where space and weight are at a premium, and where complex loading is present. Key industries and equipment include:
- Robotics: Robot joints and rotary actuators.
- Aerospace & Defense: Gimbals, radar platforms, and control surface actuators.
- Medical Equipment: CT scanners, MRI machines, and surgical robots.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- Industrial Automation: Rotary tables, indexing heads, and CNC rotary unions.
