NN300 Auto Quad Angle Underpinner
The NN300 is a pneumatic quad-angle frame joiner for factory-scale cut-and-join layouts. Four V-nails drive simultaneously while auto-feed keeps cycles continuous—ideal when daily output exceeds what a bench underpinner can sustain, with low-supervision quad-angle joining.
An underpinner drives V-nails through the back of a picture frame joint to lock mitered corners without visible face nails. Pneumatic underpinners are the standard joining method in professional framing shops because they are fast, repeatable, and compatible with hardwood, MDF, and composite moulding profiles.
The NN300 differs from single-corner CNC underpinners by nailing all four corners in one cycle. Quad-angle underpinner architecture removes the walk-around step, which is why automated lines report up to 300% higher joining output versus manual pneumatic underpinners.
Continuous auto-feed lets operators add moulding while the machine cycles, so the underpinner does not stop for every reload. At roughly 15 frames per minute with ±0.1 mm joining accuracy, the NN300 fits cut-and-join backbone layouts that pair stack cutting with quad-angle joining—not a turnkey full production line.
Buyers often compare European underpinners from established framing brands. The NN300 delivers comparable pneumatic V-nail joining with factory-direct OEM support from XKY—request specs, air requirements, and a quote for your line layout rather than assuming distributor markups.
| Potencia total | 3kw |
| Alimentación | 220V |
| Presión de aire | 6-8MPa |
| Peso | 800kg |
| Dimensión | NN300 | Double Miter Saw Stack Cutter | Active-Clamping CNC Underpinner | Touchscreen Plate-Clamping CNC Underpinner |
|---|---|---|---|---|
| Caso de uso | High-volume factories upgrading cut-and-join with low-supervision quad-angle joining | Large-scale factories handling high-volume, stable frame orders with few profile changes | Flexible studios and mid-size shops with frequent profile and material changes | High-end galleries and premium frame shops demanding zero-gap miter joints |
| Rendimiento | ~15 frames/min | Tens of thousands per day (continuous high-speed cutting) | Hundreds to thousands of frames/day | 1,000–3,000 frames/day |
| Nivel de automatización | Fully automatic (PLC) | Linked stack cutting station | CNC programmed (semi-automatic) | Touchscreen CNC with coordinated plate clamping |
| Producción diaria recomendada | 2,000–8,000 frames/day (configuration-dependent) | 2,000–10,000+ frames/day (configuration-dependent) | 500–2,000 frames/day | 1,000–3,000 frames/day |
- Clavadoras vs ensambladoras de marcos
- NC600 double miter stack cutter
- Configuración de sierra ingletadora apilada
- Solución automatización a escala
- NN underpinner series
- Presupuesto automatización de fábrica
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- Centro de documentación
- Preguntas frecuentes
- Comparar con Double Miter Saw Stack Cutter
What is the biggest difference from a conventional CNC underpinner?
The NN300 is a line-grade quad-angle underpinner for cut-and-join layouts: all four corners are nailed at once, with auto push-off to the outfeed conveyor—roughly 300% higher throughput than manual pneumatic underpinners.
Do I need to stop the machine to reload moulding?
No—the operator can add stock while the machine runs. A single load holds 10+ sticks.
What are the air pressure and lubrication requirements?
Requires 6–8 MPa working pressure. A built-in capacitive oil pump supports automatic lubrication and routine maintenance.
Underpinner vs frame joiner—which machine do I need?
Both terms describe V-nail corner joining equipment. The NN300 is a line-grade underpinner for quad-angle automation; bench frame joiners suit lower volume. Pair with a stack cutter such as the NC600 when you need cut-and-join factory throughput.
How does the NN300 compare to other pneumatic underpinners?
European and North American brands sell single-corner and multi-corner underpinners for framing shops. Evaluate nail capacity, auto-feed, and line integration. The NN300 focuses on four-corner simultaneous driving with XKY OEM engineering support.
Double Miter Saw Stack Cutter
Maximice la producción con la Sierra Ingletadora Doble NC600. Cortadora de apilamiento de grado industrial diseñada para la producción en masa de marcos para fotos y molduras de alta resistencia.
Fully Automatic Stack Cutter
NC500 是一款专为精密相框制造设计的自动气动双头切框锯。具备智能速度调节功能，适用于木材、MDF 和 PVC 切割。
Back Panel Support Blanking Saw
La FP100 es una sierra de corte automática para soportes de caballete de marcos de fotos. Cortadora de cartón de puntal de alta precisión para producción en masa.
Need factory-scale cut-and-join? See factory backbone solutions Soluciones para fábrica →
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