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Key technical characteristics include:
- Low starting and running torque due to optimized internal geometry and minimal lubrication drag.
- High running accuracy with radial runout typically within microns, supporting consistent performance in servo and feedback systems.
- Axial and radial load handling from a single bearing, eliminating the need for duplex pairs in many designs.
- Sealed, shielded, or open configurations to accommodate varying environmental and lubrication requirements.
- Material options such as AISI 52100 chrome steel or 440C stainless steel for corrosion resistance, with cadmium or chrome plating available.
- Lubrication options tailored for cleanroom, vacuum, or high-temperature conditions, including low outgassing greases and dry-film lubricants.
These bearings are classified as extra light duty (typically conforming to ABEC 5 or higher tolerances), and are available in inch-series sizes such as the 6700 and 6800 series. Their narrow cross-section and lightweight design allow for seamless integration into compact assemblies such as torque tube housings, robotic joints, sensor gimbals, and actuated linkages.
In robotic and automation applications, torque tube bearings enhance system responsiveness and positional repeatability while reducing energy loss due to friction. Their smooth operation and compact profile make them ideal for high-precision joints, motor feedback shafts, and end-effectors where minimal backlash and consistent rotational performance are critical.
