SW-Stahl und Werkzeugvertriebs GmbH
Tel. +49 (0) 2191 / 46438-0
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Instruction Manual
BGS technic KG
Bandwirkerstr. 3
42929 Wermelskirchen
Tel.: 02196 720480
Fax.: 02196 7204820
www.bgstechnic.com
© BGS technic KG, Copying and further use not allowed
If such equipment is nit used then the tool should be lubricated by shutting off the air supply to the tool, depressurising the
line by pressing the trigger on the tool.
Disconnect the air line and pour into the intake bushing (22) a teaspoonful (5ml) of a suitable pneumatic motor lubricating oil
preferably incorporating a rust inhibitor.
Reconnect tool to air supply and run tool slowly for a few seconds to allow air to circulate the oil.
If tool is used frequently lubricate on daily basis and if tool starts to slow or lose power.
When lubricating, also ensure that screen in intake bushing is clean.
It is recommended that the air pressure at the tool whilst the tool is running at 90 p.s.i./6.2 bar.
The tool can run at lower and higher pressure with the maximum permitted working air pressure of 100 p.s.i./ 7.0 bar. For a
lower air pressure the tool will give a lower output for a given setting of the sir regulator set for 90 p.s.i. operation and
increased output for higher pressure.
Hence it is possible that changes in supply pressure can give situation where the fastener is under over tightened. For
changes in pressure, the regulator position and application should be reassessed. It is recommended that joint tightness of
the threaded fastener assembly be checked with suitable measuring equipment.
Follow the national legislation of waste disposal.
Operating
The output of the impact wrench in prime working condition is governed by mainly three factors
a) The input air pressure
b) The time the impact wrench is operated on joint.
Normal time for joints of average tension requirement 3 to 5 seconds.
c) The setting of air regulator for a given joint at a given pressure operated for a given time.
The air regulator item (39) can be used to the regulate the output of the impact wrench if no other control means is available.
It is strongly recommended that an external pressure regulator ideally as part of a filter / regulator / lubricator (FRL) is used
to control air inlet pressure so that the pressure can be set to help control the tension required to be applied to the threaded
fastener joint.
There is no consistent reliable torque adjustment on an impact wrench of this type.
However, the air regulator can be used to adjust torque to the approximate tightness of known threaded joint.
To set the tool to the desired torque, select a nut or screw of known tightness of the same size, thread pitch and thread
condition as those on the job. Turn air regulator to low position, apply wrench to nut and gradually increase power (turn
regulator to admit more air) until nut moves slightly in the direction it was originally set.
The tool is now set to duplicate that tightness, note regulator setting for future use.
When tightness nuts not requiring critical torque values, run nut up flush and then tighten an addition alone-quarter to one-
half turn (slight additional turning is necessary if gaskets are being clamped).
For additional power needed on disassembly work, turn regulator to its fully open position.
This impact wrench is rated a 1” bolt size. Rating must be down graded for spring U bolts, tie bolts, long cap screws, double
depth nuts badly rusted conditions and spring fasteners as they absorb much of the impact power.
When possible, clamp or wedge the bolt to prevent spring back.
Soak rusted nuts in penetrating oil and break rust seal before removing with impact wrench.
If nut does not start to move in three to five seconds use a large size impact wrench.
