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CWS
−
D100
−
B Welding System
Introduction
2005 Swagelok Company, all rights reserved
September 2005
1-5
The Weld Head
The SWS weld heads deliver consistent, precise welds for outside diameters from 1/16 in.
to 2 in. (3 mm to 52 mm). There are six weld heads to choose from, depending on the size
of the work pieces. See Figure 1-3.
A dc motor in the weld head drives a rotor which carries the tungsten electrode around the
weld joint. Optical circuitry in the weld head sends precise feedback to the power supply
to control the speed of the rotor.
All moving parts in the weld head mount in low-friction devices to provide smooth,
consistent operation.
A spring-loaded, floating brush continuously contacts approximately one-third of the
circumference of the rotor at all times. This configuration ensures consistent, uniform
electrical conductance to the rotor and electrode.
See Table 1-5 on page 1-10 for the weld head specifications.
Series 5
Series 20
Series 10
Series 4 Micro
(Rigid)
Figure 1-3 Weld Heads
Series 8 Micro
Series 4 Micro
(Flexible)
Series Micro
Motor Module
Series Micro
Motor Module