Automatic Pallet Changer (APC) & Manual CNC Pallet Changer Systems

An Automatic Pallet Changer (APC) is a system that automates the exchange of pallets (which hold workpieces) in and out of a CNC machine. It's designed for manufacturers who want to keep the spindle running while setup happens off-machine, enabling unattended production and eliminating time lost to manual pallet exchanges.

Key specifications include a standard pallet size of 500mm x 500mm (with custom sizes available), a maximum payload of 300 kg per pallet, and a fast pallet change time of approximately 30 seconds. It is controlled by an integrated PLC with an HMI panel.

Our APC system is designed for broad compatibility and can be integrated with most major CNC controllers, including Fanuc, Siemens, Mitsubishi, Heidenhain, and others via standard M-code signals or robotic interfaces.

Our APC systems are equipped with safety fencing (light curtains or physical barriers) to protect operators, as well as integrated sensors to confirm pallet seating, clamping status, and door positions before initiating a change cycle.

The APC is ideal for HMLV. While the machine is working on one job (Part A), an operator can be safely setting up a completely different job (Part B) on the external loading station. This 'setup-while-running' approach takes most setup time off the spindle, so you can switch parts without stopping the cut.

Our technical team works with you to ensure a smooth integration. This involves a site assessment, mechanical interfacing with your VMC, and electrical integration with your CNC controller. We provide full training for your operators and maintenance staff.

While ROI varies, many customers see a payback period of less than 12-18 months. By raising spindle uptime sharply — in some cells from around 30% to over 85% — and enabling unattended operation, the APC lets you produce more parts per day with the same machine and staff, leading to a rapid return on investment.

If you need STEP/IGES files for your machine layout or 2D drawings for technical reference, please Contact us and our engineering team will provide the necessary documentation.

Yes. Many customers start with an APC and later expand to a pallet pool, FMS, or robot-assisted loading. Integration is typically done through standard CNC I/O, M-code handshakes, and safety interlocks, and can also be extended to MES/SCADA depending on the controller and system design.

Repeatability depends on the model, pallet interface, and maintenance. Our pallet changer systems use tapered datum positioning and clamping confirmation to support high repeat positioning accuracy. If you need proof for a specific tolerance, ask us for sample measurement data and verification methods (e.g., repeat location checks after multiple pallet swaps).

Keep datum surfaces clean (chips and coolant residue are the biggest enemies of repeatability), follow the recommended air supply quality, and periodically inspect clamps, sensors, and pneumatic lines. For lights-out CNC machining, we recommend a simple preventive checklist and critical spares plan to minimize downtime.

Standard automatic pallet changers — covering common machine envelopes — ship in roughly 15–25 days after PO confirmation. Custom pallet sizes, non-standard machine interfaces, or matched APC sets across cells add 1–2 weeks. Committed lead time is confirmed in writing once the machine model, pallet size, and pallet count are locked.

Each APC ships with a factory acceptance test report covering pallet repeatability, exchange cycle timing, and machine-handshake verification (M-code or OPC UA). Material certificates for structural assemblies, electrical schematics, and the written warranty are available on request at order time.