2D AOI Double-Side PCB Inspection Machine by Southern Machinery: Top and Bottom in One Pass
The 2D AOI double-side inspection system images PCB top and bottom at once with dual 5 MP cameras, 8 µm accuracy, and 430 × 500 mm coverage for EMS and medical boards.
Sep 10, 2026 · Updated Sep 10, 2026 · Southern Machinery
2D AOI Double-Side PCB Inspection Machine by Southern Machinery
Single-sided AOI leaves the bottom of a double-sided PCBA unchecked. This machine images both sides at once with two cameras.
What is this machine used for?
An optical inspection station for assembled PCBs, in-line or off-line.
- Simultaneous top and bottom inspection with two cameras
- Detects missing, wrong, reversed, and skewed parts, plus solder and polarity defects
- Reads Data Matrix codes with array and bad-mark checks
- Programmed by manual teach, CAD import, or remote/offline programming
Verified specifications
| Parameter | Value |
|---|---|
| Inspection mode | Top and bottom simultaneously, 2 cameras |
| Cameras | 2 x 5 MP full-color industrial (20 MP option) |
| Lens resolution | 10-25 µm, customizable |
| Minimum component | 0.005 chip, 0.3 mm pitch IC |
| PCB size | 50 x 50 to 430 x 500 mm (customizable) |
| PCB thickness / weight | 0.3-5.0 mm / max 3 kg |
| Component height | Top 90 mm, bottom 35 mm |
| XY speed / accuracy | Max 830 mm/s / 8 µm |
Confirm parameters at quotation.
How it fits into a complete PCB assembly line
- Printing, placement, and reflow build the first side.
- The board is flipped and the second side is assembled.
- AOI inspects both sides for placement and solder defects.
- NG boards are marked for rework; OK boards move on.
- Optional barcode and MES link results for traceability.
Key selection parameters for buyers
- Smallest and largest PCB compared with the 430 x 500 mm envelope
- Finest component pitch and required lens resolution
- Component height clearance on top and bottom, plus SMEMA integration
ROI perspective
Manual double-side inspection is slow and inconsistent, and bottom-side defects often reach final test. Two-camera AOI replaces that labor and reduces escapes; ROI is modeled case by case.
About Southern Machinery - your SMT/THT line partner
Founded in 2011 in Shenzhen, Southern Machinery serves 237+ global EMS, ODM, automotive, and medical customers with cost-effective SMT/THT lines, board handling, and inspection.
FAQ
What makes double-side AOI different from single-side AOI?
Two cameras image both sides at once, so bottom-side parts and joints are inspected in one pass.
What is the minimum component size?
According to the product page, a 0.005 chip and 0.3 mm pitch IC, with 10-25 µm lenses.
What PCB sizes are supported?
50 x 50 mm to 430 x 500 mm, 0.3-5.0 mm thick, up to 3 kg, customizable.
Does it support traceability and MES?
Yes - Data Matrix plus optional barcode, SPC server, and MES interface.
Next steps
Contact: jasonwu@smthelp.com | WhatsApp: +86 13602562576
Catalog: https://file.autoinsertion.com | Images: https://ph.smthelp.com
Product page: https://www.smthelp.com/2d-aoi-for-pcb-double-side-checking.html
YouTube: https://www.youtube.com/watch?v=if7-rQVEYuw
Published by Southern Machinery - SMT/THT PCB Assembly Automation. Established 2011 in Shenzhen; 237+ global customers.
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