JB042XP0

5/16" Constant Section Bearings

JB042XP0 5/16" Constant Section Bearings
JB042XP0 5/16" Constant Section Bearings

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Part No.
Part No. JB042XP0

Basic Information

Bearing type Ball
System of measurement Inch
Thin section bearings type Reali-Slim Sealed
Construction Single Row
Weight 0.31 lbs
Tolerance class ABEC-1
Seal type Sealed
For load direction Four Point Contact

Main Dimensions

Bore diameter 4.25"
Bore diameter tolerance -0.0008"– 0"
Outside diameter 4.875"
Outside diameter tolerance -0.0008"– 0"
Width 0.3125"
Width tolerance +.000 –.005"

Inner Ring Dimensions

Shoulder diameter inner ring 4.449"

Outer Ring Dimensions

Outer ring small-side face inner diameter 4.675"

Performance

Temperature range -30°C to 110 °C
Radial dynamic load rating 1120 lbf
Radial static load rating 1830 lbf
Axial dynamic load rating 1780 lbf
Axial static load rating 4570 lbf
Dynamic load moment 1917 lbf
Static load moment 4170 lbf
Rated load moment 1 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: $ 119.37 / each
In Stock

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JB042XP0 Bearing Product Overview & Core Advantages

The JB042XP0 is a high-performance Four Point Contact Ball Bearing from the Reali-Slim Sealed series. Engineered with inch system measurements, this thin section bearing delivers exceptional load capacity in a compact, space-saving design. Its sealed construction and pre-lubrication ensure reliable operation, making it ideal for applications demanding high precision and compact envelope solutions where handling combined radial and axial loads is critical.

JB042XP0 Bearing Model Code Explained, Specifications & Naming Convention

Code Segment Technical Meaning
JB042 Base model designation for Reali-Slim sealed series with specific bore size
XP0 Specific variant indicating Four Point Contact design and sealed configuration
Sealed Integrated sealing for contamination protection and lubricant retention

JB042XP0 Bearing Structural Features & Performance Benefits

Four Point Contact Design: Enables the bearing to simultaneously handle radial loads, axial loads in both directions, and moment loads with exceptional efficiency. The optimized raceway geometry distributes stress evenly across four contact points.

Thin Section Construction: With a cross-section of only 0.3125", this bearing provides maximum performance in minimal space, ideal for compact machinery designs where weight and space constraints are critical.

Premium Material Selection: Chrome steel rings and balls combined with a brass cage ensure dimensional stability, corrosion resistance, and reliable operation under varying temperature conditions (-30°C to 110°C).

Sealed & Lubricated: Factory-sealed with premium lubricant, providing maintenance-free operation and protection against contamination in demanding industrial environments.

High Load Capacity: Engineered to withstand significant dynamic and static loads (Radial dynamic: 1120 lbf, Axial dynamic: 1780 lbf) while maintaining precision alignment.

JB042XP0 Bearing Typical Application Areas

  • Robotics and Automation: Rotary joints, robotic arms, and precision positioning systems
  • Aerospace Equipment: Control mechanisms, actuator systems, and guidance systems
  • Medical Devices: Imaging equipment, surgical robots, and diagnostic instruments
  • Semiconductor Manufacturing: Wafer handling equipment, precision stages, and inspection machinery
  • Industrial Machinery
  • Defense Systems: Radar positioning, targeting systems, and surveillance equipment
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