KC300XP0

3/8" Constant Section Bearings

KC300XP0 3/8" Constant Section Bearings
KC300XP0 3/8" Constant Section Bearings

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Part No.
Part No. KC300XP0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Open
Construction Single Row
Weight 3.21 lbs
Tolerance class ABEC-1
Seal type Open
For load direction Four Point Contact

Main Dimensions

Bore diameter 30"
Bore diameter tolerance -0.0018"– 0"
Outside diameter 30.75"
Outside diameter tolerance -0.0018"– 0"
Width 0.375"
Width tolerance +.000 –.010"

Inner Ring Dimensions

Shoulder diameter inner ring 30.277"

Outer Ring Dimensions

Outer ring small-side face inner diameter 30.473"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 4338 lbf
Radial static load rating 14610 lbf
Axial dynamic load rating 8050 lbf
Axial static load rating 36520 lbf
Dynamic load moment 49436 lbf
Static load moment 221900 lbf
Rated load moment 49 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: $ 3026.23 / each
In Stock

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KC300XP0 Bearing Product Overview & Core Advantages

The KC300XP0 is a high-performance thin section bearing designed for applications demanding precision and space optimization. As a Four Point Contact ball bearing, it excels at simultaneously handling combined radial and axial loads from any direction. Its ABEC-1 precision class and inch system construction ensure reliable operation in compact, weight-sensitive assemblies, making it an ideal solution for high-rigidity and precision positioning systems.

KC300XP0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
KC Reali-Slim® Open Bearing Series
300 Cross-section Designation
XP Extra Precision (ABEC-1 Tolerance)
0 Open (No Seal) Construction

KC300XP0 Bearing Structural Features & Performance Benefits

Four Point Contact Design: The single-row construction with optimized raceway geometry enables the bearing to support combined radial and axial loads efficiently, providing exceptional moment load capacity (49 ft-lbf rated).

Thin Section Construction: With a minimal cross-section (0.375" width) relative to its large bore (30"), this bearing maximizes space utilization while maintaining high rigidity and structural integrity.

Precision Engineering: Manufactured to ABEC-1 tolerance standards with controlled radial internal clearance (0.0000 – 0.0005"), ensuring smooth operation and accurate positioning.

Premium Materials: Chrome steel rings and balls combined with a brass cage deliver durability, corrosion resistance, and stable performance across a wide temperature range (-30°C to 110°C).

KC300XP0 Bearing Typical Application Areas

  • Robotics: Joint and actuator mechanisms requiring compact, high-capacity bearings
  • Aerospace: Control systems, gimbal mechanisms, and instrumentation
  • Medical Equipment: Scanning devices, surgical robots, and precision instruments
  • Semiconductor Manufacturing: Wafer handling equipment and precision positioning stages
  • Optical Systems: Rotary tables and positioning devices in measurement equipment
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