S-4000 Axial Insertion Machine for THT Automation by Southern Machinery

Manual axial insertion remains a common bottleneck in mixed SMT/THT factories. Resistors, diodes, and similar taped axial parts may seem simple, but when operators insert them by hand all day, the process becomes slow, hard to balance, and prone to missed parts or inconsistent lead forming.

Southern Machinery's S-4000 Axial Insertion Machine is designed to turn that manual workcell into a controlled, repeatable THT automation step. It is especially relevant for EMS, ODM, industrial control, power electronics, lighting, automotive electronics, and other PCB assembly teams that need stable output without adding more manual labor.

Founded in Shenzhen, China in 2011, Southern Machinery focuses on high-efficiency, cost-effective SMT/THT PCB assembly automation equipment, supporting over 237 global customers with complete line solutions, training, spare parts, and practical engineering support.

What Is This Machine Used For?

The S-4000 Axial Insertion Machine automatically feeds, forms, inserts, cuts, and clinches taped axial components into through-hole PCBs. Typical parts include axial resistors, diodes, and similar components supplied in tape format.

In a real factory, this means the S-4000 can replace a manual axial insertion station where several operators handle the same repetitive components. The goal is not just speed—the bigger value lies in repeatability: stable component feeding, controlled insertion, consistent lead clinching, and a more predictable flow before wave or selective soldering.

Why EMS Factories Automate Axial Insertion

Axial insertion is often underestimated because the components are common and inexpensive. However, manual insertion creates hidden costs:

• Output depends heavily on operator skill and fatigue.
• Missed insertions can go unnoticed until later inspection or testing.
• Lead forming varies from operator to operator.
• Manual stations are hard to synchronize with SMT, wave soldering, and final assembly.
• Labor costs rise with increased volume or regular overtime.

The S-4000 is intended for factories that want a more measurable process. The source landing page positions the machine for high-speed axial insertion, inline loader integration, and smart EMS production where the THT section needs to keep pace with the rest of the line.

Core Capabilities from the Source Document

The selected product page highlights these capabilities for the S-4000:

• Axial taped component insertion for resistors, diodes, and similar parts.
• Automatic lead cutting and clinching, depending on the final configuration.
• Inline loader or inloader options for better board flow.
• Conveyor-ready integration for smart EMS lines.
• Recipe-driven programs for repeatable production setup.
• Support for connecting the process into tracking and planning workflows.
• 3D model, catalog PDF, operation manual, and ROI comparison resources for technical evaluation.

The source page also provides typical technical figures. These should be treated as typical examples, dependent on part format, program, PCB handling, and final options:

| Item | Typical Capability (Source Page) | Practical Value |

|---|---:|---|

| Insertion throughput | Up to about 20,000 components/hour, depending on program and part type | Helps move axial insertion from a manual bottleneck to a predictable cycle time |

| Component format | Axial taped components such as resistors and diodes | Standard feeding reduces missed insertions and handling damage |

| Lead forming / clinching | Automatic lead cut and clinch, configuration dependent | Supports better retention before wave or selective soldering |

| PCB size support | Approximately up to 450 x 350 mm (confirm per configuration) | Covers many common EMS panel sizes |

| Inline integration | Loader/inloader options and conveyor-ready interfaces | Reduces handling time and work-in-progress |

| Utilities | AC 220V typical, compressed air about 0.5–0.7 MPa typical | Suitable for many standard EMS factory environments |

Final specifications must be confirmed against the customer's PCB drawing, axial BOM, pitch, body size, tape specification, and production target.

Typical Application Scenarios

1. Power Supply and LED Driver Boards

Power and lighting products often use many axial resistors and diodes. If these boards are produced in medium or high volume, manual insertion can become the slowest THT step. The S-4000 helps stabilize insertion before wave soldering.

2. Industrial Control Boards

Industrial control PCBs may have mixed SMT, radial THT, axial THT, connectors, and heavier components. The S-4000 handles the repetitive axial part group while operators or odd-form machines focus on components less suited for axial automation.

3. Automotive and Appliance Electronics

For products requiring traceability, repeatability, and consistent solder joints, automated axial insertion gives process engineers a cleaner, more controllable step before soldering and inspection.

4. EMS Factories Upgrading from Manual THT

Many EMS plants do not automate all THT components at once. A practical first step is to automate the highest-volume repetitive component family. If axial parts consume several operators per shift, the S-4000 is a strong candidate for that first upgrade.

How the S-4000 Fits into a Complete PCB Assembly Line

Southern Machinery does not treat axial insertion as an isolated machine purchase. For most customers, the better discussion is how the S-4000 fits into the complete line.

A typical mixed SMT/THT flow can look like this:

1. SMT section: PCB loader, automatic stencil printer, pick-and-place, reflow oven, plus optional SPI/AOI.
2. THT preparation: Board buffer or conveyor after SMT, routing into the THT insertion section.
3. Axial insertion: S-4000 automatically inserts taped axial components such as resistors and diodes.
4. Additional THT insertion: Radial insertion, odd-form insertion, terminal insertion, or manual assist for special parts.
5. Soldering: Wave soldering or selective soldering, selected according to PCB layout, component clearance, thermal mass, and production mix.
6. Inspection and test: AOI, visual inspection, ICT/FCT, barcode tracking, or MES data collection as needed.
7. Board handling: Loaders, unloaders, conveyors, buffers, NG/OK sorting, and PCB inverters where necessary.

This complete-line view matters because automating axial insertion alone will not solve the full production problem if downstream soldering, inspection, or board handling remain unstable.

Key Selection Parameters Before Buying

Before recommending a final S-4000 configuration, Southern Machinery would typically confirm the following:

• Product type: power supply, LED driver, industrial control, automotive electronics, appliance board, or other application.
• Monthly or shift output: pieces per month, pieces per shift, working days, and shifts per day.
• PCB size range: board or panel length, width, thickness, and single/double-sided process.
• Axial BOM details: component pitch, body size, lead diameter, tape format, and quantity per board.
• Current bottleneck: labor shortage, insertion errors, low throughput, poor clinching, soldering defects, or high rework.
• Line automation level: standalone cell, semi-auto line, or fully inline line with loaders and conveyors.
• Quality requirements: IPC class target, inspection plan, barcode tracking, and data collection needs.
• Downstream soldering: wave soldering or selective soldering, including fixture requirements and thermal constraints.

If the board has both axial and radial components, the S-4000 may be paired with a radial insertion machine or a radial tape feeder strategy. If the board includes large connectors, transformers, terminals, or heatsinks, those parts may require odd-form insertion, terminal insertion, or manual assist.

ROI, Quality, and Capacity Value

The source document states that many factories use axial automation to replace the output of about 4–6 operators, depending on component mix and cycle time. This should be treated as an example, not a universal guarantee.

The practical ROI usually comes from four areas:

• Labor reduction: fewer repetitive manual insertion positions for axial parts.
• More stable output: insertion speed and cycle time become easier to plan.
• Lower rework pressure: consistent lead forming and clinching support better soldering results.
• Better line balance: THT insertion becomes easier to synchronize with SMT, wave soldering, inspection, and final test.

For a buyer, the right question is not only "What is the machine price?" A better question is: "How many axial insertions per shift are we doing now, how many operators are required, and what quality losses occur because the process is manual?" That is the data needed for a serious payback calculation.

Why Choose Southern Machinery

Southern Machinery provides more than a single axial insertion machine. We can help customers design the full automation path from SMT through THT and soldering:

• SMT lines with printing, pick-and-place, reflow, and inspection options.
• THT automation including axial insertion, radial insertion, odd-form insertion, and terminal insertion.
• Wave soldering and selective soldering solutions.
• Board handling equipment such as loaders, unloaders, conveyors, buffers, and inverters.
• Optional traceability, barcode scanning, data collection, and smart factory integration.
• Global service support, spare parts support, remote guidance, and professional training.

For factories that need a cost-effective upgrade path, we can start with the highest-impact bottleneck first and leave room for future automation.

FAQ

Can the S-4000 insert every through-hole component?

No. The S-4000 is for axial taped components such as resistors and diodes. Connectors, transformers, terminals, radial capacitors, and odd-form parts may need other insertion methods or manual assist.

Is the listed 20,000 components/hour guaranteed?

No. The source page presents it as a typical upper figure; actual output depends on the component, PCB program, insertion sequence, board handling, and selected options. A confirmed cycle-time estimate requires your PCB and BOM.

Can it connect with a loader and conveyor line?

Yes. The source page describes loader/inloader options and conveyor-ready integration. The final layout should be checked against board size, available floor space, and upstream/downstream machines.

Should I choose wave soldering or selective soldering after axial insertion?

It depends on the board design. Wave soldering is common for higher-volume THT boards with suitable clearance. Selective soldering may be better for mixed-technology boards where some components cannot pass through a full wave process.

What information should I send for a quotation?

Send the PCB drawing or panel size, board thickness, axial component list, pitch, body size, tape specification, quantity per board, target output, shift pattern, and current bottleneck.

Can Southern Machinery support a complete line, not just this machine?

Yes. Southern Machinery can configure SMT, THT insertion, wave/selective soldering, board handling, inspection, and traceability options as a complete PCB assembly automation solution.

CTA: Get a Practical S-4000 Line Recommendation

If axial resistors or diodes are slowing down your THT line, send Southern Machinery your PCB size range, axial BOM, target output, and current process photos or videos. We will help you check whether the S-4000 is the right first automation step, what feeder and loader configuration is needed, and how it should connect with your soldering and inspection process.

For a serious recommendation, include your daily output target, number of shifts, and the number of operators currently used for axial insertion. That data lets us compare manual insertion with automated THT production in a practical way.