Swinging cables can wear fast. When routed inside and along the upper arm, the cables are firmly in place during robot operation, which results in reduced wear. They are also protected from weld spatters, heat and collisions.
So, the service life is substantially increased to 6-8 years in 3-shift operation, compared to 1–2 years for an external DressPack. This gives an important advantage in higher uptime and lower costs for maintenance.