Automatic Axial Component Insertion by Southern Machinery: Direct Jumper Wire Without a Sequencer

Watch it in Action: Dual JW & 360 Rotary Table | Boost S4000 Axial Insertion Efficiency

What Is This Machine Used For?

The S4000 is an automatic axial component insertion machine — the backbone of high-volume THT (through-hole technology) assembly. It takes tape-packed axial-lead components and inserts them into a PCB automatically, replacing the slow, error-prone hand placement of through-hole parts.

Q: What exactly does "axial insertion" mean?

A: Axial components — resistors, diodes, capacitors, transistors and fuses — have two leads exiting from opposite ends of the body in a straight line. The S4000 cuts each part from its 52 mm carrier tape, forms the leads, and clinches them through the PCB in one continuous motion. It is the fastest way to populate the high-count passive and small-signal components that still dominate power and appliance boards.

Q: What sets the S4000 apart from other axial inserters?

A: Two things stand out. First, direct jumper wire (JW) insertion — the machine feeds and inserts jumper wires in the same pass without a separate sequencing machine, saving roughly one-third of the jumper wire material and an entire process step. Second, its configurability: input capacity grows from 20 to 100 stations in 10-station increments, so the machine scales with your product mix instead of forcing you to build a new line.

Typical Application Scenarios

The S4000 earns its place wherever through-hole passives and small-signal parts are still designed into the board:

Home & electrical appliances — air conditioners, televisions, microwaves, electric cookers, electric kettles and induction cookers all carry dense axial-lead resistor and diode counts.
Power supply products — vehicle power supplies, energy-saving power supplies and electronic ballasts depend on precisely clinched axial parts for long-term reliability under load.
Vehicle electronics — car audio, vehicle power supplies and vehicle lighting modules combine high volume with strict quality and traceability demands.
General electronics — instruments, watches and control boards, where mixed-model runs favor a machine that reconfigures quickly.

How It Integrates Into a Complete PCB Assembly Line

Axial insertion is rarely a standalone process. In a Southern Machinery full-line THT solution, the S4000 works in sequence with:

Radial insertion (the S-3010B / S3000 family) — for radial-lead capacitors and other upright parts.
Odd-form insertion (the S7000 series) — for connectors, relays and other non-standard geometries.
Wave soldering — the S4000's clean, consistent clinching (adjustable 0°–45° lead angle and 1.28–1.80 mm clinch length) gives the wave soldering stage a stable, repeatable joint every time.

Because the S4000 is programmed through an Excel spreadsheet loaded over USB, line changeover is a data task rather than a mechanical one — the same operator who runs the radial inserter can re-tool the axial machine in minutes.

Key Selection Parameters

Before specifying an axial inserter, work through this checklist with your production data:

Input stations required — the S4000 expands from 20 to 100 stations in 10-station increments; match the station count to the distinct axial part numbers in your BOM.
Component envelope — confirm your parts fit 52 mm taped axial leads, with a maximum body length of 16 mm and maximum body diameter of 5 mm (resistors 1/8 W–2 W).
Board format — the machine handles PCB sizes from 50 × 50 mm up to 450 × 450 mm.
Lead geometry — hole span from 5–20 mm and jumper wire span from 5–30 mm; verify these against your PCB footprint library.
Insertion directions — base capability of 0°, 90°, 180° and 270°; the demo below also showcases a 360° rotary-table configuration for finer orientation control.
Jumper wire volume — if your boards carry wire links, the direct JW Feeder is the single biggest material and labor saving to capture.
Quality safeguards — dual-part detection flags two parts loaded into one chain slot before they reach the board, protecting yield.

ROI, Quality & Throughput Considerations

The S4000 is specified at 22,000 CPH (components per hour), with a realistic sustained throughput of 13,000 CPH — figures that translate into real output when measured against a manual insertion bench.

The economics compound in three directions:

Material savings — direct jumper wire insertion eliminates the sequencer pass and saves roughly one-third of the jumper wire material.
Labor savings — one operator oversees an automated line that would otherwise require multiple manual assemblers.
Defect reduction — dual-part detection and consistent clinching cut the rework and scrap that erode margin on every high-volume board.

Southern Machinery designs for low cost of ownership: low-maintenance dispenser heads, low energy consumption, and an interface that operators of all skill levels can run.

FAQ

Q: What component types can the S4000 insert?

A: Axial-lead components including diodes, resistors, capacitors, transistors and fuses, supplied on 52 mm taped axial leads.

Q: How fast is it?

A: The specification speed is 22,000 CPH, with roughly 13,000 CPH as a realistic sustained throughput for typical mixed boards.

Q: Can it insert jumper wires?

A: Yes. The direct Jumper Wire Feeder inserts JWs in the same pass without a separate sequencer, saving about one-third of the jumper wire material.

Q: What PCB sizes does it support?

A: Boards from a 50 × 50 mm minimum up to a 450 × 450 mm maximum.

Q: How do I program it?

A: Through an Excel program loaded over USB — no proprietary programming language required.

Q: How many input stations do I need?

A: The machine is expandable from 20 to 100 stations in 10-station increments; Southern Machinery helps you size the station count to your BOM.

Contact Southern Machinery

Founded in 2011 in Shenzhen, China, Southern Machinery serves 237+ global customers with precision SMT and THT PCB assembly automation — from insertion and wave soldering to board handling and inspection, backed by spare parts, training and global support.

Tell us about your line — what is your current first-pass yield on through-hole assembly, and how many operators do you dedicate to axial insertion today? We'll help you quantify the payback.

Email: jasonwu@smthelp.com
Phone / WhatsApp: +86 13602562576
Website: https://www.smthelp.com
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