Operation - Makita JS1600 Betriebsanleitung

Permissible shearing thickness (Fig. 4)
The groove on the yoke serves as a thickness gauge for
shearing mild or stainless steel plate. If the material fits
within the groove, it is shearable.
The thickness of materials to be sheared depends upon
the type (strength) of the material. The maximum shear-
ing thickness is indicated in the table below in terms of
various materials. Attempting to shear materials thicker
than indicated will result in tool breakdown and/or possi-
ble injury. Keep within the thickness shown in the table.
Material
Mild steel (A)
Hard steel (B)
Stainless steel
Aluminum plate
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the tool.
Blade inspection
Before using the tool, check the blades for wear. Dull,
worn blades will result in poor shearing action, and the
service life of the tool will be shortened.
Rotating or replacing blades
Both the upper and lower blades have four cutting edges
on each side (the front and back). When the cutting edge
becomes dull, rotate both the upper and the lower blades
90° to expose new cutting edges.
When all eight edges are dull on both the upper and
lower blades, replace both blades with new ones. Each
time blades are rotated or replaced, proceed as follows.
Remove the blade securing bolts with the hex wrench
provided and then rotate or replace the blades. (Fig. 5)
Some tools have one or more thin washers between the
upper blade and the blade holder. Be sure to use the
same number of thin washers when reassembling.
(Fig. 6)
NOTE:
• No thin washers are used for the lower blade.
Install the upper blade and tighten the upper blade secur-
ing bolt with the hex wrench. Press up on the upper blade
while tightening it. (Fig. 7)
After securing the upper blade, be sure that there is no
gap left between the upper blade and the beveled sur-
face of the blade holder. (Fig. 8)
When installing the lower blade onto the yoke, the lower
blade should be pressed against the yoke so as to be
contacting the beveled portions A and B of the yoke and
the tip C of the lower blade positioning screw while you
tighten the lower blade securing bolt. There must be no
clearance between A, B and C during installation. (Fig. 9)
NOTE:
• The lower blade positioning screw is factory-assem-
bled. Do not tamper with it. (Fig. 10)
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Tensile
Max. cutting
Strength
thickness (mm)
2
(N/mm )
400 1.6 (16 ga)
600 1.2 (18 ga)
800 0.8 (22 ga)
200 2.5 (13 ga)
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OPERATION

Holding material (Fig. 11)
The materials for cutting should be fastened to the work-
bench by means of workholders.
Shearing method (Fig. 12)
Keep the shear moving parallel with the material.
Maximum cutting width (Fig. 13)
Stay within the specified maximum cutting width (A):
Case of length 1,800 mm.
Mild steel
1.6 mm
(thickness)
Max. cutting
100 mm
width (A)
Stainless
1.2 mm
(thickness)
Max. cutting
80 mm
width (A)
Minimum cutting radius
Minimum cutting radius is 30 mm when cutting 1.0 mm
mild steel.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspection or
maintenance.
• Never use gasoline, benzine, thinner, alcohol or the
like. Discoloration, deformation or cracks may result.
Replacing carbon brushes (Fig. 14)
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps. (Fig. 15)
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized Service Centers, always
using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita Service Center.
• Blades
• Hex wrench
Under 1.2 mm
No limit
Under 1.0 mm
No limit
5