Changing Punches and DiesMaintenance and Service
CAUTION! Unplug nibbler before changing
punches and dies.WARNING! Preventive maintenance per-
Insert Hex key 14 into die position 3 and turnformed by unauthorized personnel may result
until hexagon socket screw 11 is in the center ofin misplacing of internal wires and components
the boring of the lower die ring 10.which could cause serious hazard. We recom-
mend that all tool service be performed at a
Remove the Hex key from position 3. UnscrewBosch Factory Service Center.
lower die 4 and hold-down appliance 6 with
stop plate 7.
Tool Lubrication
Loosen hexagon socket screw 11. Remove
Your Bosch tool has been properly lubricated
punch 8 downwards. Lubricate new or regroundand is ready for use. We recommend, that tools
die well before inserting.
with gears be regreased with a special gear
Tighten hexagon socket screws 5, 9 and 11.lubricant every time the brushes are changed.
Note: The stop plate 7 serves as protection for
Carbon Brushes
the lower die ring 10 and should be replaced in
good time if worn.The brushes and commutator in your Bosch
tool have been engineered for many hours of
dependable service. To maintain peak effi-
Regrinding the punch
ciency of the motor, we recommend that every
The punch may be reground a maximum 1.0two to six months the brushes be examined.
mm. Grinding must be only on the cutting plane
Only genuine Bosch replacement brushes spe-
at exactly 90° to the center axis.cially designed for your tool should be used.
NOTE: Regrinding the lower die
Bearings
The lower die must not be reground.
After about 300-400 hours of operation, or at
Punch and Die Lubricationevery second brush change, the bearings should
Proper lubrication is essential to prolong punchbe replaced at a Bosch Factory Service Center.
and die life, and is achieved by occasionallyBearings which become noisy (due to heavy
fully submersing the punch and die in a smallload or very abrasive material cutting) should
container of the proper lubricant.be replaced at once to avoid overheating and
motor failure.
To further ensure a smooth cut and long punch
life, always lubricate the cutting path with cut-Cleaning
ting oil. When cutting steel or stainless steel,WARNING! To avoid accidents, always
lubricate path of cut before starting work. Whendisconnect the tool from the power supply
cutting aluminum, lubricate path of cut whilebefore cleaning or performing any maintenance.
making the cut. Since the punch cuts on theThe tool may be cleaned most effectively with
downstroke, the upper side of the cut should becompressed air. Always wear safety goggles
lubricated.when cleaning tools with compressed air.
When cutting steel, use a cutting oil or an SAE
30 weight oil.Ventilation openings and switch levers must be
kept clean and free of foreign matter. Do not
When cutting aluminum, a mixture of 7 partsattempt to clean by inserting pointed objects
kerosene and 3 parts turpentine should be used.
through openings.
Should punch jam, immediately switch off
nibbler, re-lubricate punch and die, and remove
CAUTION! Certain cleaning agents and
tension from sheet.solvents damage plastic parts. Some of these
WARNING! The use of any accessory orare: gasoline, carbon tetrachloride, chlorinated
attachment other than recommended in thiscleaning solvents, ammonia and household
instruction manual or the BOSCH Catalog maydetergents that contain ammonia.
present a risk of personal injury.
7
BM 3609929431 4-0474/22/04, 9:30 AM |
ACEC
BOSCH
