Torque wrench range
May 1st 2008 A new gearbox design means new
models in Norbar Torque Tools'
range of Pneutorque pneumatic
torque wrenches are now faster,
lighter, smaller and easier to handle.
The 540-2700 N.m and 700-
3500 N.m PTM-92 will be followed
shortly by the 900-4500 N.m and
1200-6000 N.m PTM-119 Series.
The PTM-92 3500 N.m model is
half the weight and 60% faster
than the nearest equivalent from
Norbar's traditional range. Weight
distribution is important for ease
of handling, and research by
Norbar has resulted in models
with high strength, low weight
aluminium reaction arms.
Speed and motor power have
an effect on workshop efficiency,
as testing at a wind turbine
manufacturer proved. In the multistage
tightening process of the
'shrink disc', on each re-application
of the tool the Pneutorque moved
the bolt 30° more than a
competitor, resulting in the job
being completed 25% faster.
Tools of this size are used in
mining, wind generators and large
off-road vehicles.
Tests were carried out using
both an impact wrench and a
Pneutorque tool to tighten 10
truck wheel nuts.
Results showed that, in terms of
vibration, a user of the impact
wrench would reach their daily
exposure action value (EAV) in
8min, the Pneutorque operator
could perform the task for more
than 24 hours without breaching
the EAV. More articles from Norbar Torque Tools Limited: | 
