Main image of the NextasTech Automatic Pallet Changer
CNC Automation

Pallet Changer System

Tailored Solutions for Industrial Efficiency

Pallet Changer System is a tailored solution engineered to resolve pain points in industrial manufacturing. Refined through iterative R&D, it adapts to diverse application needs across multiple sectors. The product line is categorized into two core series—Manual Pallet Changer System and Automatic Pallet Changer System—empowering enterprises to cut costs, boost efficiency, and enhance market competitiveness.

Core Technical Highlights

  • Tapered-Surface Positioning: Ensures stable clamping and high repeat positioning accuracy.
  • Pressurized Clamping: Piston-driven mechanical self-locking structure delivers high-strength output.
  • Smart Detection: Built-in air tightness detection verifies positioning and feeds back to CNC.
  • Self-Cleaning: Automatic air-blow ports remove debris from datum surfaces for consistent accuracy.

CNC Pallet Changer System: higher spindle uptime, faster setup, better repeatability

A pallet changer system (manual or automatic) lets you prepare the next job outside the machine while machining continues. For job shops running high-mix, low-volume (HMLV) production, this means less waiting, fewer re-indicating steps, and a more predictable process from first piece to last piece.

Reduce setup time

Clamp a fixture on the pallet offline, then swap pallets in seconds/minutes depending on configuration—ideal for frequent changeovers.

  • Quick change worktable for VMC / 3-axis milling
  • Repeatable pallet references to reduce re-indicating
  • Standardized fixtures and pallet plates across jobs

Improve accuracy & consistency

Using tapered datum positioning and verified clamping feedback, the pallet seats the same way every time for stable machining results.

  • Micron-level repeatability (model dependent)
  • Air tightness / seating detection for safer automation
  • Self-cleaning air blow keeps datum surfaces clean

Enable unattended machining

Automatic pallet changing is a practical entry point for CNC automation—often simpler than adding a full robot cell.

  • PLC + HMI control with standard I/O / M-code signals
  • Supports pallet queue workflows and repeat setups
  • Integration path to pallet pool / FMS and MES

Where pallet changer systems are commonly used

Pallet changer systems are popular in aerospace, automotive, mold & die, medical, and general precision parts machining—especially when multiple fixtures, vises, or tombstones are rotated through the same machine. They are also widely used for multi-part batching and lights-out CNC machining strategies.

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Manual vs. Automatic Pallet Changer: choosing the right configuration

Both systems use repeatable pallet positioning to speed up setups. The best choice depends on your mix of parts, operator time, and how far you want to push automation.

Manual Pallet Changer System

Best for shops that want faster changeovers with minimal automation and a lower entry cost.

  • Great for frequent fixture swaps on 3-axis VMCs
  • Operator-controlled pallet exchange (simple workflow)
  • Ideal when part volumes are moderate and staffing is stable

Automatic Pallet Changer System (APC)

Best for high throughput, HMLV production, and unattended machining where spindle uptime is the main KPI.

  • Automated pallet swap cycle with interlocks & confirmation
  • Supports pallet queue logic and cell-style workflows
  • Integration-ready for MES/SCADA, pallet pool, or robot loading
Selection factor Manual Automatic (APC)
Typical goal Reduce setup time & standardize fixtures Maximize spindle uptime & enable unattended runs
Changeover workflow Operator-assisted pallet exchange Automated cycle with sensors and interlocks
Best for Job shops, prototype work, frequent part changes Batch production, HMLV at scale, lights-out machining
Integration Simple; minimal CNC signals PLC/HMI; supports I/O, network protocols (model dependent)

Pallet Style Options

Choose the pallet top that matches your fixture strategy—T-slot pallets for flexible clamping, magnetic pallets for fast loading of flat parts, aluminum pallets for lightweight handling, and zero-point pallets for repeatable quick change workholding. Standardizing pallet plates is a proven way to speed up CNC setups and support pallet pool workflows.

Aluminium Pallet

Aluminium Pallet

Material: Aluminium Alloy

Size: Adaptable to machine stroke

T-Slot Pallet

T-Slot Pallet

Material: Martensitic Stainless Steel

Size: Adaptable to machine stroke

Magnetic Pallet

Magnetic Pallet

Material: Martensitic Stainless Steel

Size: Adaptable to machine stroke

Zero Point Pallet

Zero Point Pallet

With Zero Point Positioner

Material: Martensitic Stainless Steel

Product Series 2.1

Manual Pallet Changer System

The manual pallet changer is a practical way to reduce setup time on a vertical machining center (VMC). Operators can clamp a fixture pallet offline and perform a quick pallet swap, making it ideal for frequent part changes, prototypes, and short-run CNC machining.

Key Advantages

  • Stable Loading & Unloading

    Flexible dual-station design supports front or side-mounted loading, enabling high-mix, low-volume production.

  • Quick Loading & Processing

    Completes full layout clamping and rapid retooling in just a few seconds.

  • Efficiency & Utilization Boost

    Offline loading and fast machine transfer enhance equipment utilization significantly.

  • Safe & Labor-Saving

    External clamping allows quick, effortless positioning via simple operation, reducing labor intensity.

Technical Specifications (Manual)

Control System Manual push control
Compatible Systems Mitsubishi, FANUC, Brother, KND, etc.
Delivery Load 100 Kg
Air-tightness Range ± 0.01 mm
Max Load 300 Kg
Specification V4 Positioning Datum
Repeat Accuracy < 0.005 mm
Clamping Force 40,000 N
Max Lifting Load 850 Kg
Product Series 2.2

Automatic Pallet Changer System

A CNC automatic pallet changer (APC) boosts spindle uptime by automating the pallet swap cycle and confirming safe clamping before machining starts. It is well suited for HMLV production at scale, batch machining, and lights-out workflows where repeatability, safety interlocks, and controller integration matter.

Key Advantages

  • Robust External Clamping

    High-strength rigid bracket structure supporting custom heavy-load configurations. Compact footprint with integrated safety protection.

  • Micron-Level Precision

    Adopts zero-point positioning principles, consistently maintaining <0.005mm repeat accuracy for stable, ultra-precise clamping.

  • Broad VMC Compatibility

    Compatible with multiple VMC brands. Supports front or side pallet exchange with customizable pallet sizes.

  • Smart Integrated Control

    Self-developed control system supports MES/SCADA integration for unattended automated loading, management, and data visualization.

Technical Specifications (Automatic)

Control System NextasTech
Compatibility Mitsubishi, FANUC, Brother, KND, etc.
Communication EtherNet/IP, ModbusTCP, Socket, PROFINET
System Features Dual-station, product editing, output monitoring, capacity statistics
Delivery Speed 300 mm/s
Movement Accuracy 0.02 mm
Max Load 2,000 Kg
Specification V6 Positioning Datum
Repeat Accuracy < 0.005 mm
Clamping Force 60,000 N

Engineering & Integration Guide for Automatic Pallet Changers

Planning an APC for a pallet pool, robot‑tended cell, or unattended machining line? Use the guide below to size capacity, define control I/O and safety interlocks, and estimate cycle‑time impact—so your pallet changer stays repeatable and integration is low‑risk.

Capacity & Pallet Sizing Worksheet

Define pallet size, payload, and moment load early—especially for 5‑axis fixtures—so swap accuracy and repeatability don’t drift over time.

ParameterWhat to defineWhy it matters
Pallet size & top standardUsable area, locating features, grid / T‑slot / zero‑point topDetermines fixture layout, flexibility, and changeover speed
Payload (kg)Pallet + fixture + part mass (include coolant)Affects dynamics, bearings, and safe acceleration / deceleration
Overturning momentCG offset vs. locating plane (X/Y/Z)Critical for repeatability under heavy cuts and high feeds
Required repeatabilityTarget position repeatability and re‑indicating allowanceSets locating strategy and verification method
Coolant & chipsFlood / through‑spindle, chip type, chip evacuation pathImpacts sealing, sensors, and long‑run reliability
Automation scenarioRobot, pallet pool, FMS, lights‑out batch sizeDefines cycle strategy and confirmation requirements

Controller I/O & Safety Interlocks

A clean handshake (M‑codes, I/O, and confirmations) prevents mis‑loads and supports unattended pallet swaps.

Signal / checkTypical implementationNotes
Pallet presentInductive / RFID / mechanical keyUse dual confirmation if running lights‑out
Clamp OKPressure switch + position sensorAvoid relying on pressure only for safety‑critical clamps
Unclamp OKPosition sensorNeeded before axis motion / magazine movement
Door / guard interlockSafety relay / PLCTarget appropriate safety level (e.g., PLd/SIL2)
Hydraulic / pneumatic pressure OKRedundant pressure switchesLog pressure trends to predict leaks
Robot / magazine readyDiscrete I/O + timeout logicDefine safe states for recovery after E‑stop

Cycle‑Time & ROI Quick Model

Estimate spindle uptime gain with a simple before/after model. This helps justify an APC versus manual pallet swapping.

InputHow to use itExample outcome
Current setup time per jobMeasure indicating + clamping + probingBaseline for payback
Pallet swap timeAPC swap + confirmation sequenceOften minutes → seconds
Batch size / mixHigh‑mix jobs benefit mostMore jobs/day with same labor
Spindle utilization (%)Track cutting vs. idleTarget higher OEE with palletized flow
Labor rate & shiftsInclude overtime / night shift premiumQuantifies saved labor and added output
Scrap / rework riskTrack mis‑clamp or mis‑load eventsInterlocks + repeatability reduce costly errors

Preventive Maintenance Plan

A simple maintenance routine keeps repeatability stable for long‑run production (pallet pool / unattended machining).

IntervalWhat to checkWhy
DailyClean locating surfaces; check chips around reference facesChips are the #1 repeatability killer
WeeklyInspect sensors and cables; verify clamp/unclamp confirmationPrevents false positives and downtime
MonthlyCheck pressure stability; inspect seals; test interlock chainCatches leaks and drifting switches early
QuarterlyVerify repeatability with a gauge pallet / probe routineCreates a measurable baseline for QA
AnnuallyFull inspection: bearings, manifolds, wear surfacesExtends lifecycle and reduces surprise failures

Automatic Pallet Changer Selection Checklist & Data Guide

Use this checklist to define your CNC pallet changer requirements: pallet size, payload, repeatability targets, controller signals, and safety interlocks. It helps speed up quoting and reduces integration risk.

Key specifications

System type Manual / automatic pallet changer (model dependent)
Pallet options Aluminum, T-slot, magnetic, and zero-point pallet styles
Automation fit Designed for pallet pool / robot / unattended workflows
Repeat setup Repeatable pallet location to reduce re-indicating
Interface Customizable for machine table sizes and patterns
Safety Interlocks and confirmation strategy (system dependent)

Tip: share your part material, machine model, and target takt time. We’ll propose the right configuration and measurable targets.

Compatibility & standards

  • Integrates with zero-point systems for repeatable pallet location across machines.
  • Supports multiple pallet top standards to match your fixture strategy.
  • Suitable for high-mix production requiring frequent pallet swaps.

Measured outcomes (before → after)

  • Changeover time reduction: faster job switching and higher spindle uptime.
  • Standardization: consistent pallet references reduce setup variation.
  • Unattended operation: fewer manual interventions in production schedules.

Workholding configuration

  • Pallet spec: size, top interface, and load requirement.
  • Machine integration: mounting pattern, guarding, and clearance planning.
  • Workflow: pallet queue, identification, and safe clamp/unclamp sequencing.

Evidence & proof

  • Cell layout drawing showing pallet flow and safety zones.
  • Demo video of pallet swap cycle and reference verification.
  • Repeat location test results after multiple pallet changes (sample).

Delivery & support

  • System integration review: machine model and layout needed for confirmation.
  • Installation/commissioning checklist and operator training notes.
  • Service plan: recommended spares and maintenance guidance.

Real-World Applications

From multi-fixture job shops to automated production cells, pallet changer systems help keep the machine cutting. Common applications include milling families of parts on dedicated fixture pallets, running multiple SKUs overnight, and standardizing setups across machines with repeatable pallet references.

Automatic Pallet Changer case study 1 Automatic Pallet Changer case study 2 Automatic Pallet Changer case study 3

Resources & Downloads

Request 3D CAD Files (STEP)

Contact us to get the files for your design and simulation needs.

Frequently Asked Questions

01 What is an Automatic Pallet Changer (APC) and who is it for?
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 maximize spindle uptime, reduce manual labor, and enable 24/7 'lights-out' production.
02 What are the key specifications of the NextasTech APC?
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.
03 Which CNC machine controllers is the APC compatible with?
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.
04 What safety features are included in the APC system?
Safety is paramount. 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.
05 How does the APC handle high-mix, low-volume (HMLV) production?
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' capability eliminates setup downtime, making it highly efficient to switch between different parts without stopping the spindle.
06 What is the installation and integration process like?
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.
07 What is the typical Return on Investment (ROI) for an APC?
While ROI varies, many customers see a payback period of less than 12-18 months. By drastically increasing spindle uptime (often from 30% to over 85%) and enabling unattended operation, the APC allows you to produce more parts per day with the same machine and staff, leading to a rapid return on investment.
08 Where can I get CAD files or technical documentation?
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.
09 Can the automatic pallet changer integrate with a pallet pool or robot loading?
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.
10 What repeatability can I expect, and how is it verified?
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).
11 What maintenance is needed to keep the pallet changer accurate and reliable?
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.