KF042XP0

3/4" Constant Section Bearings

KF042XP0 3/4" Constant Section Bearings
KF042XP0 3/4" Constant Section Bearings

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Part No.
Part No. KF042XP0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Open
Construction Single Row
Weight 2 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 5.75"
Outside diameter tolerance -0.0008"– 0"
Width 0.75"
Width tolerance +.000 –.005"

Inner Ring Dimensions

Shoulder diameter inner ring 4.805"

Outer Ring Dimensions

Outer ring small-side face inner diameter 5.195"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 4795 lbf
Radial static load rating 5640 lbf
Axial dynamic load rating 7070 lbf
Axial static load rating 14110 lbf
Dynamic load moment 8993 lbf
Static load moment 14110 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: $ 121.88 / each
In Stock

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KF042XP0 Bearing Product Overview & Core Advantages

The KF042XP0 is a thin-section four-point contact ball bearing engineered for applications demanding space optimization without sacrificing performance. Featuring a single-row design and an open construction, this bearing excels in handling combined radial and axial loads simultaneously from any direction. Manufactured to ABEC-1 precision standards with a consistent cross-section, it provides reliable operation in compact assemblies where high rotational accuracy and rigid support are critical. Its pre-lubricated design ensures immediate readiness for installation and operation.

KF042XP0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
KF Indicates the Reali-Slim® series of thin-section bearings
042 Specifies the cross-section size designation
XP Denotes four-point contact design for combined loading capability
0 Indicates open construction (no seals or shields)

KF042XP0 Bearing Structural Features & Performance Benefits

Four-Point Contact Design: The optimized raceway geometry enables the bearing to support combined radial and axial loads in any combination, making it exceptionally versatile for complex loading conditions.

Thin-Section Construction: With a consistent cross-section of 0.75" and large bore diameter relative to overall size, this bearing provides space-saving solutions while maintaining structural integrity and load capacity.

Precision Engineering: Manufactured to ABEC-1 tolerance class with tight dimensional control (±0.0008" on diameters), ensuring smooth operation and precise rotational characteristics.

High-Capacity Materials: Constructed with chrome steel rings and balls with a brass cage for optimal strength, wear resistance, and reliable performance under dynamic loading conditions.

Optimized Load Ratings: The design delivers impressive dynamic load capacity (4,795 lbf radial, 7,070 lbf axial) and static load capacity (5,640 lbf radial, 14,110 lbf axial) for its compact dimensions.

KF042XP0 Bearing Typical Application Areas

  • Robotics and automation systems - Joints, rotary actuators, and positioning mechanisms
  • Aerospace equipment - Control mechanisms, instrumentation, and guidance systems
  • Medical devices - Imaging equipment, surgical robots, and diagnostic instruments
  • Semiconductor manufacturing equipment - Wafer handling and precision positioning stages
  • Optical and imaging systems - Rotary tables, scanners, and surveillance equipment
  • Industrial machinery - Where space-constrained applications require high-precision rotation
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