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Semi-Automatic | Pneumatic | Production Underpinner

Product Number: 04-079

The U-300P is a bench top, base model for production joining applications where the customer is looking for speed and repeatability of joining the same sized moulding.

The design of the U-300P allows the operator to set up to 3 position stops for V-Nail insertions. The nail head pneumatically moves underneath the fixed frame and the joining cycle is actuated first by the hand lever locating the pre-set V-Nail position and then the V-Nail is inserted by actuating the foot pedal.

For those customers looking a similar type of joining machinery but require flexibility of joining different moulding sizes, refer to our U-300 unit.

Former Model Reference – VN4L

Purchase Package
  U-300P Purchase Package
(1) 7mm Nail Head
(1) 10mm Nail Head
(1) 12mm Nail Head
(1) Single Vertical Positive Placement Clamp
(1) Single Metal Pressure Plate
(1) Magnetic Support for Vertical Placement Clamp
(1) Blue Rubber Pads (SW)
(1) Yellow Rubber Pads (MW)
(1) Black Rubber Pads (HW)
(1) Adjustable Fence (3 knobs)
(1) 4mm Allen Wrench
(1) 5mm Allen Wrench
(1) Magnetic V-Nail Pick-up Tool
(1) Machine Manual
Replacement Parts & Accessories


Extension Wings

P/N Item Description
04-032 Extension Wings Kit


Replacment Clamping Pads

P/N Item Description
04-026 Blue Replacement Pad (recommended for SW)
04-025 Yellow Replacement Pad (recommended for MW)
04-024 Black Replacement Pad (recommended for HW)


Replacement Nail Heads

P/N Item Description
04-090 Nail Head – 3mm
04-095 Nail Head – 5mm
04-091 Nail Head – 7mm
04-092 Nail Head -10mm
04-093 Nail Head – 12mm
04-094 Nail Head – 15mm


P/N Item Description
04-045 Floor Stand Option
04-167 Magnetic Base for Clamp Assembly
41-221 Single Placement Vertical Clamp Kit
04-020 Single Metal Pressure Plate
04-023 Magnetic - Single Metal Pressure Plate
04-059 Round Felt Pad, Small, 6/PK
41-151 Double Hydraulic Clamp Hold Down System
41-157 Adjustable Fence (2 knobs)

Power Requirements

Compressed Air 4NI at 5 Bar
CE Compliant

Sales & Technical Documents

AMP U300P.jpg

U-300P AMP Sellsheet 1-9-15.jpg

U 300P
Semi-Auto/ Pneumatic/
Production Underpinner

Unique Performance Features

  • Recommended for production joining requirements
  • Features pneumatic loader to eliminate nail jams
  • “Soft Clamping” pneumatic feature for damage free joints
  • Quick-change magnetic pad hold down feature fitting most moulding profiles
  • Operates only with pneumatic air, no electrical hook-up needed
  • Dual actuation functions for V-Nail position and pre-set V-Nail insertion
  • Designed with a unique trouble free piston V-Nail driver block-blade system for years of dependable single and multi-stacking operations

Frame Joining Capabilities

Moulding Width
(min to max)

Moulding Height
(min to max)

Max Distance
Between V-Nails

¼” up to 3¼”

¼” up to 3 ¼”


Pre-set V-Nail
Position Stops

V-Nail Sizes

V-Nail Channel


3,5,7,10,12,15 mm

220 V-Nails

Machine Dimensions & Weight

Width: 14" (350mm)
Length: 25" (640mm)
Height: 20" (356mm)
Weight: 78 lbs (36 kg)

Related Products

AMP - Power Twist® V-Nail

AMP - Power Twist® V-Nail