Double Cups (Imperial)

Overview of Double Cups (Imperial)

Double Cups (Imperial) are single-piece double outer races used in tapered roller bearing assemblies. These components are designed to house two rows of tapered rollers and are typically paired with double cones (a single-piece inner race with two raceways). This configuration provides a wide bearing spread and high load-handling capability, especially in systems subject to overturning moments or combined loads.

Design Features

• One-Piece Outer Race: The double cup integrates two outer raceways into a single, solid structure for better alignment and rigidity.
• Precision Fit: Ensures optimal raceway geometry and consistent roller contact across both rows.
• Spacer Compatibility: In many assemblies, an inner spacer is included between the double cones to set preload or internal clearance.

Performance Advantages

• Wide bearing spread increases resistance to overturning moments
• Stable performance under high radial and axial loads in both directions
• Pre-assembled configurations available for simplified installation
• Improved reliability in high-impact and high-load environments

Application Scenarios

Double Cups (Imperial) are commonly used in heavy-duty and industrial applications, including:

• Mining equipment
• Rolling mills
• Railroad axle assemblies
• Construction and off-highway machinery
• Gear reducers and industrial transmissions

Installation Flexibility

When combined with double cones, the bearing assembly can be used in:

1. Fixed Positions: Mounted securely on a rotating shaft to provide precise axial location and control under load.
2. Floating Positions: Installed in rotating housings or systems requiring axial displacement to accommodate thermal expansion or misalignment.

Conclusion

Double Cups (Imperial) serve as a critical outer race component in double-row tapered roller bearing assemblies. Their robust design and compatibility with heavy-duty bearing systems ensure reliable performance, extended service life, and efficient operation in demanding environments.