High-Torque, Robotic Servo Spindle

The PushCorp STC0612-BT40 high-torque servo spindle is an ideal solution for robotic, material-removal applications such as:

  • Robotic Grinding
  • Robotic Sanding
  • Robotic Polishing
  • Robotic Deburring
  • Robotic Drilling
  • Robotic Gate Removal

The STC0612-BT40 features a powerful 12.0 hp [9 kW] servo motor that provides constant speed. This automation equipment is designed to mount in a parallel or perpendicular orientation on the AFD82, AFD1240, and AFD92 force compliance devices. As a result, it has never been easier to program beautiful and consistent surface finishes.

The STC0612-BT40 may also be mounted directly to the robot with no force compliance device. This opens the door for automated, rigid applications such as routing, deflashing, and gate removal.

The motor shaft is configured to accept standard BT40 tapered toolholders. Customers can choose to use standard, off-the-shelf CNC tooling as well as custom PushCorp toolholders. Together, these components allow for a wide range of abrasive disks, wheels, drill bits, and cutting tools.

The STC0612-BT40 servo spindle comes standard with quick-change functionality. Simply supply 90 PSI to drop off a toolholder, then release the air pressure to pick up a new one with a fresh abrasive.

The Kollmorgen S724 amplifier powers the servo spindle, as well as provides analog speed control and digital I/O. This can be ordered on its own or integrated into a UL certified control panel.

Automation Features

  • 12 horsepower [9 kW] servo motor (Liquid Cooling Required)
  • 6000 maximum RPM
  • Fully adjustable and reversible speed
  • Uses standard BT40 Toolholders
  • ± 5% speed regulation
  • 22 lb.-ft. [30 N·m] minimum Collet holding torque
  • Sealed bearings for long service life
  • PushCorp proprietary high-speed shaft seal
  • Mounts directly to PushCorp Active and Passive compliant tools
  • Fail-safe pneumatic Toolholder release
  • 1.00 inch [25.4 mm] Tool Shaft diameter
  • All fittings, fasteners, and threaded holes are METRIC


Model STC0612-BT40
Power 12.0 hp [9 kW]
Continuous Stall Torque 10.7 lb.-ft. [14.5 N·m]
Speed Range 60-6,000 RPM
Speed Regulation ±5% (Reversible)
Tool Weight 82 lb. [37.2 kg]
Cooling Liquid
Required Toolholder BT40
Retention Knob Parlec 4020TRK or equiv.
Clamping Supply Air Dry, Non-lubricated 90 psi [6.2 bar] Minimum 100 psi [6.9 bar] Maximum
Technical Specification Packages
STC0612-BT40 STC0612-BT40 Download Technical Files
AFD82-2 Parallel AFD82-2 Parallel Download Technical Files
AFD82-2 Perpendicular AFD82-2 Perpendicular Download Technical Files
AFD92-2 Parallel AFD92-2 Parallel Download Technical Files
AFD92-2 Parallel #2 AFD92-2 Parallel #2 Download Technical Files
AFD92-2 Perpendicular AFD92-2 Perpendicular Download Technical Files
AFD92-3 Parallel AFD92-3 Parallel Download Technical Files
AFD1240-2 Parallel AFD1240-2 Parallel Download Technical Files
AFD1240-2 Parallel #2 AFD1240-2 Parallel #2 Download Technical Files
AFD1240-2 Perpendicular AFD1240-2 Perpendicular Download Technical Files
Spindle Installation - Parallel Orientation
Spindle Installation - Perpendicular Orientation

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