PMK Rotary Table Bearings (RTB Series) are precision axial-radial bearings developed for rotary tables, milling heads, and other high-accuracy rotating applications requiring combined load support and precise motion control.

Constructed as ready-to-mount units, RTB bearings combine radial and axial raceways to accommodate axial, radial, and tilting loads simultaneously. Their high running accuracy and preload-adjustable design make them ideal for multi-axis machining systems, rotary tables, and precision positioning platforms.

Key benefits

• Axial-radial precision bearing suitable for rotary tables, milling heads, and indexing units.
• Engineered for high-precision applications requiring simultaneous support of axial, radial, and moment loads.
• Optimal resistance to tilting moments with excellent running accuracy and repeatable positioning.
• Ready-to-mount bearing unit simplifies installation and reduces assembly time.
• Radial and axial preload can be applied after mounting for enhanced stiffness and smooth rotation.
• Tailor-made and custom-designed bearing solutions available on request.

Applications

• Machine-tool rotary tables (4th/5th axis).
• Milling heads, indexing systems, and precision rotary platforms.
• Automation and robotics requiring precise rotational guidance under combined loads.
• Custom rotary stages or special-purpose rotary motion systems.