Service intervals
Shorter service intervals with cleaning and lubrication of the impact
parts will improve the function and reduce the wear. Follow our service
recommendations.
Air pressure, tightening time/torque and number of tightening
It is obvious that wear will increase with increased air pressure, longer
tightening time/higher torque and number of tightening.
A tightening time of 1-5 seconds is recommended. The Skidmore-
Wilhelm table in Test data can be used as a guide for max. tightening
time.
Longer tightening or loosening times will increase wear, producing
malfunction and risk of breakage.
Socket and bolt size
Each impact wrench covers a certain bolt size range. The impact mech-
anism parts have been designed for good durability in combination with
the recommended standard socket/bolt size.
Usage of oversized sockets/bolts will increase premature wear and
risk of breakage.
If frequent square drive breakages occur and different square drive
sizes are avaliable, use the largest size.
Long sockets/extensions
It is better to use exte standard socket instead of long or extra
long sockets as the lower inertia /mass of the extension will give less
stress on the impact mechanism. However an extension will reduce the
applied torque to some degree.
s005530
Long socket
Ext socket
Recommendations for maximum socket / bolt size
A/F
B
L
D
d
S
s01
1
091
Bolt size
B (max)
Socket opening
A/F (max)
Socket size
D (max)
Socket length
L (max)
Socket size
d (max)
Drive
S
M32 (1 1/4")
48mm (1 7/8")
72mm
75mm
54mm
1"
9
© Atlas Copco Industrial Technique AB - 9836 6503 00
Service
EN
LMS68 GOR25
