S4000 Axial Insertion Machine for High-Speed THT PCB Assembly

What Is the S4000 Axial Insertion Machine?

The S4000 is a high-speed axial component insertion machine designed for through-hole (THT) automation in PCB assembly lines. It handles radial-lead components delivered on taped or amorous lead frames, automatically cutting, forming, and inserting them into PCB holes with precision.

Key applications include:

• Power supplies (vehicle power, energy-saving adapters, ballasts)
• LED drivers and lighting controls
• Automotive electronics (car audio, in-vehicle power modules)
• Industrial instrument PCBs
• Home appliance control boards (air conditioners, induction cookers, microwaves)

Typical Application Scenarios

High-Volume Power Electronics Manufacturing

In power supply production, axial components such as resistors, diodes, and inductors are among the highest-frequency THT parts. Manual insertion of these components is labour-intensive and inconsistent. The S4000 automates the feed-insert process, reducing operator fatigue and positional variance across production shifts.

Automotive PCB Assembly Lines

Automotive control boards require repeatable insertion force and precise clinch angles to withstand vibration environments. The S4000's insertion mechanism delivers consistent lead clinch on the underside of the board — critical for automotive-grade reliability without post-assembly reworking.

LED Driver and Lighting PCB Production

High-mix LED driver boards often combine axial capacitors with odd-form power components. The S4000's flexible feeder configuration allows manufacturers to switch between component types without retooling the entire station — a significant advantage for lighting OEMs managing batch sizes from 500 to 50,000 units.

Integrating the S4000 into a PCB Assembly Line

A typical THT line configuration involving the S4000 follows this sequence:

1. Wave solder pre-heating zone — PCB enters the preheater to bring assembly to solder paste activation temperature
2. S4000 axial insertion — components are fed, cut to lead length, bent to lead spacing, and inserted with lead clinching
3. S7000/S7900 odd-form insertion — non-standard components (connectors, terminals, heavy electrolytics) inserted downstream
4. Wave soldering — full board passes through molten solder wave to secure all THT leads
5. Cleaning and inspection — flux residue removed; AOI or manual inspection confirms joint quality

The S4000 is compatible with standard SMEMA conveyor interfaces, allowing drop-in placement between existing SMT placement lines and wave solder equipment.

Key Selection Criteria for Axial Insertion Equipment

When evaluating an axial inserter for your production line, these technical factors determine ROI:

| Criterion | What to Verify |

|---|---|

| Component lead range | Check min/max lead diameter (mm) and lead spacing (mm) the machine accommodates |

| Insertion speed | Confirm rated throughput for your specific component package — not a generic CPH figure |

| Lead cutting/forming | Verify cut-to-length precision and bend angle repeatability |

| Feed system type | Radial taped,/amorous, or loose — confirm feeder compatibility with your components |

| Board size range | Minimum and maximum PCB dimensions the machine can handle |

| Conveyor interface | SMEMA compatibility for downstream line integration |

| Changeover time | Time required to switch between component types — critical for high-mix production |

Important: Specific throughput figures (CPH), certification claims, and pricing should be confirmed directly with the equipment supplier, as these vary by component specification, board layout, and regional distribution agreement.

How Southern Machinery Supports Your THT Automation Investment

Southern Machinery (Shenzhen Southern Machinery Sales And Service Co., Ltd) has been serving the global EMS industry since 2011, operating from Shenzhen, China. With 237+ clients worldwide, the company specialises in end-to-end PCB assembly automation — from SMT placement through THT insertion and wave soldering.

When you purchase or service an S4000 axial insertion system through Southern Machinery, you receive:

• Spare parts and consumables — feeder components, cutter blades, insertion fingers
• Retrofit and upgrade kits — compatible with older-generation axial inserters
• Technical training — machine operation, programming, and maintenance training for your floor staff
• Repair services — troubleshooting, board-level repair, and on-site support

The S4000 is one component within Southern Machinery's broader THT automation portfolio, which includes the S3010A radial inserter, S7000/S7900 odd-form inserters, and S7020 terminal insertion machines.

Frequently Asked Questions

Q: What types of components can the S4000 insert?

A: The S4000 handles axial-lead components — components with leads extending from both ends of a cylindrical or rectangular body. Common examples include resistors, diodes, axial capacitors, and inductors delivered on taped or amorphous lead frames.

Q: What is the lead spacing range the S4000 supports?

A: Lead spacing varies by machine configuration and tooling. Confirm your specific component's lead spacing and diameter against the machine's published specification sheet or with Southern Machinery's technical team.

Q: Can the S4000 handle both single-side and double-side PCB insertion?

A: The S4000 is designed for standard single-pass insertion on boards presented flat on the conveyor. Double-sided THT assembly typically requires a second insertion pass after the first side is wave-soldered.

Q: Is the S4000 suitable for automotive PCB production?

A: When paired with appropriate quality verification (insertion force monitoring, AOI after wave solder), the S4000 can support automotive electronics assembly. Specific automotive quality management system requirements (IATF 16949, etc.) should be discussed directly with Southern Machinery.

Q: How does the S4000 compare to manual insertion for high-mix production?

A: For batch sizes above approximately 1,000 boards per SKU, automated insertion typically delivers lower per-unit labour cost and higher repeatability. For very low volumes or prototypes, manual insertion may remain more economical until accumulation justifies automation.

Q: What downstream equipment pairs with the S4000 in a full THT line?

A: Common configurations include Southern Machinery S7000/S7900 odd-form inserters, S-WS450 or S-WS350B wave soldering machines, SME-5200 or SME-5500 cleaning systems, and S-AO600C AOI inspection — all available through Southern Machinery's single-source supply.

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Ready to evaluate the S4000 for your production line? Contact Southern Machinery's technical sales team for specification sheets, demonstration videos, and a production assessment for your specific PCB assembly application.

Contact: Kevin Yang | kevin@smthelp.com | +86 13602562576

Website: https://www.smthelp.com

File Portal (Product Videos): https://file.autoinsertion.com