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High Torque Servo Tool Changer

The PushCorp STC0612-BT40 High Torque Servo Toolholder is an ideal solution for your heavy duty applications.  The STC0612-BT40 has a powerful 12 horsepower (9 kW) Servo Motor and integral Toolholding to give you the muscle, speed control, and holding torque to perform many operations.

The Motor Shaft is configured to accept standard BT40 tapered toolholders.  Your standard CNC tooling along with custom tooling make it possible to utilize a wide range of abrasive disks, wheels, drill bits and cutting tools.  The Gripper mechanism maintains the tool position while, at the same time, providing a fast-acting release for rapid tool changes.

The STC0612-BT40 is designed to mount directly on the PushCorp AFD1200/90 Series Compliant Force Devices.  The STC0612-BT40 may also be mounted directly to the robot with no compliant device, providing a low cost machining center with a large work volume.



  • 12 horsepower (9 kW) servo motor (Liquid Cooling Required)
  • 6000 maximum RPM (Reversible)
  • Fully adjustable and reversible speed
  • Uses standard BT40 Toolholders
  • ± 5% speed regulation
  • 22 lb.-ft. (30 N·m) minimum Collet holding torque
  • Sealed ceramic 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

Tool Specifications
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]
Collet Specifications
Required Toolholder:BT40
Clamping Supply Air: Dry, Non-lubricated
90 psi [6.2 bar] Minimum
100 psi [6.9 bar] Maximum
Specifications subject to change without notice.

Mounting Configurations