AMP U-600 Multi-channel Underpinner (Backnailer) machine

The AMP U-600 Multi-channel Underpinner (Backnailer) machine is the most advanced underpinner vnailer joining machine in the Millwork industry. The user friendly touch-screen PC operation (Linux control Touch- Screen) offers enough data storage for all of your door casing profiles. The 5 channels offers stacking as well as inserting of sizes 5,7,10,12, and 15 mm Vnails into your mitered joints. This machine uses few vnails while also creating a stronger joint. The U-600 handles all types of wood, plastic, and MDF materials.

AMP’s Computerized Air Pressure System (C.A.P.S.) is the latest operating feature for its U-600 Underpinner offering the following benefits to any production based joining operation. This new feature provides the following benefits…

Eliminates the need of making manual air pressure adjustments for Vertical Clamping

  • Mechanism
  • Maximizes production efficiently with pre-set clamping pressures
  • Eliminates moulding material damage by controlled vertical clamping pressure
  • “Soft” vertical clamping option reduces the chance of moulding surface damage with very soft materials or surfaces

Unique Performance Features

  • Equipped with five individual V-Nail storing channels capable of holding up to 220 V-Nails each
  • V-Channels can store multiple sizes or one common size for production uptime and productivity
  • Easy table tilt adjustment for operator comfort
  • User friendly touch-screen P.C. operation with data storage for 5,000 frame profiles
  • Bar Code Scanner option for production integration and efficiency
  • Join either from front or back of machine
  • Machine handles all types of wood, plastics and MDF materials
  • Equipped with double hydraulic pressure clamp

Frame Joining Capabilities

Moulding Width (min to max)

¼” up to 4 ¼” (6-105 mm)

Moulding Height (min to max)
¼” up to 3 ¼” (6-80 mm)

Max Distance Between V-Nails (stroke)

5 ¾” (145 mm)

Pre-set V-Nail Position Stops


V-Nail Sizes

5, 7,10,12,15 mm (SW-HW-HDF)

Configurable V-Nail Channel Capacity

Adaptable to single size or multiple V-Nail mm sizes

5 individual channels – 220 V-Nails/channel

Machine Dimensions & Weight –

Length: 30.5” (770mm)

Width: 30.5” (770mm)

Height: 59” (1500mm)

Weight: 309 lbs (140kg)

Power Requirements

115/220 Volt 50/60 Hz.

Compressed Air 4NI at 5 Bar

CE Compliant