KC040XP0

3/8" Constant Section Bearings

KC040XP0 3/8" Constant Section Bearings
KC040XP0 3/8" Constant Section Bearings

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Part No.
Part No. KC040XP0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Open
Construction Single Row
Weight 0.45 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 4.75"
Outside diameter tolerance -0.0006"– 0"
Width 0.375"
Width tolerance +.000 –.005"

Inner Ring Dimensions

Shoulder diameter inner ring 4.277"

Outer Ring Dimensions

Outer ring small-side face inner diameter 4.473"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 1417 lbf
Radial static load rating 2100 lbf
Axial dynamic load rating 2210 lbf
Axial static load rating 5260 lbf
Dynamic load moment 2326 lbf
Static load moment 4600 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: $ 71.39 / each
In Stock

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KC040XP0 Bearing Product Overview & Core Advantages

The KC040XP0 is a thin-section four-point contact ball bearing designed for applications requiring compact design and high load capacity in minimal space. This inch-series bearing features a 4" bore and a remarkably slim 0.375" cross-section, enabling lightweight and space-efficient machinery designs. Its four-point contact construction allows it to support combined radial, axial, and moment loads simultaneously, making it an ideal solution for precision rotary systems demanding high rigidity and accuracy.

KC040XP0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
KC Kaydon® Reali-Slim® bearing series
040 Bore diameter code (4 inches)
X Cross-section code (0.375" width)
P Four-point contact design
0 Open construction (no seals)

KC040XP0 Bearing Structural Features & Performance Benefits

Four-Point Contact Design: The optimized raceway geometry enables the bearing to handle combined loads efficiently, supporting radial loads up to 1417 lbf (dynamic) and axial loads up to 2210 lbf (dynamic), while accommodating significant moment loads (2326 lbf dynamic).

Thin-Section Construction: With a consistent 0.375" cross-section regardless of bore size, this bearing enables compact machinery design and reduces overall system weight (only 0.45 lbs).

Precision Engineering: Manufactured to ABEC-1 tolerance class with tight dimensional control, ensuring smooth operation and precise positioning in demanding applications.

Premium Materials: Constructed with chrome steel rings and balls for durability, combined with a brass cage for stable operation and reliable performance.

KC040XP0 Bearing Typical Application Areas

  • Robotics and automation systems - rotary joints and positioning tables
  • Aerospace and defense equipment - gimbals, radar systems, and satellite mechanisms
  • Medical equipment - CT scanners, MRI systems, and surgical robots
  • Semiconductor manufacturing - wafer handling and precision stages
  • Industrial machinery - rotary index tables, packaging equipment, and material handling systems
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