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5-3. Nail Driving Force
Fig. 4 shows by type of wood and nail the nailer output energy provided by the supply pressure and the nailing
energy required for driving the nail flush. Air pressure which exceeds the intersecting point between the nailer
output energy and the required nailing energy for driving the nail allows the nail to be fully driven.
For example, when driving a nail of 3.3 mm dia. x 75 mm length (0.131" x 3") into a workpiece of hemlock with the
Model NV 75AG, a pressure of about 8 bar (8.2 kgf/cm
2
, 116 psi) allows the nailer to drive the nail flush with the
wood surface. A pressure beyond this value causes the nail head to be driven below the wood surface.
Fig. 4 should be used as a reference only because those values vary depending on the type of wood, moisture
content, and grain of wood.
Fig. 4 Required nailing energy and nailer output energy
2.3 x 45 mm (.090 x 1-3/4")
3.3 x 75 mm (.131 x 3")
Size of nail mm (in)
Required nailing energy Nailer output energy
Hemlock
R
NV 83A
NV 75AG
NV 65AH
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