norbar 16011.X, Operator'S Manual, Page: 9 / 23

8
FEATURES AND FUNCTIONS
Replaceable Drive Square
To avoid internal damage (especially due to torque overload), the output drive square has been designed to
shear first. Tools are fitted with a drive square that can easily be replaced, alternative drive sizes are also
available.
Clockwise / Anti-Clockwise Control
Capable of tightening and releasing threaded fasteners.
Automatic Two Speed (AUT)
The automatic two speed gearbox option can reduce the fastener run down time. The initial run down is at 5
times normal operating speed before it automatically changes gear to apply the final torque.
Manual Two Speed (MTS)
The manual two speed gearbox option allows manual selection of ‘slow’ or ‘fast’ speeds, fast speed can
reduce the fastener run down time. The difference in gearbox ratios between slow and fast speeds is
approximately factor of 5.
Optional Transducers
Electronic torque transducers can be directly fitted for precise torque monitoring, giving repeatability of up to
+/- 2%.
Optional Angle Encoder
It is possible to fit an angle encoder to the PT. This measures the 6 air motor vanes and gives an output
calculated by the following formula:
Angle (degrees) = 6 x Velocity Ratio
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