ABB 3HAC034475-003 / 3HAC034647-003 identify two different large-robot service parts. 3HAC034475-003 is a balance unit for the IRB 760 mechanical system, while 3HAC034647-003 is a motor with pinion for axis 3 of an IRB 4600 Type A configuration.
The service boundaries of ABB 3HAC034475-003 / 3HAC034647-003 are therefore different: the balance unit contains stored mechanical force, while the axis motor combines electrical power, brake, feedback and a pinion interface. Both require the robot arm to be securely supported before the assembly is released.
Commissioning ABB 3HAC034475-003 / 3HAC034647-003 uses separate checks. The IRB 760 balance path is inspected for mounting and force behavior, while the IRB 4600 motor path is checked for connector identity, gear engagement, brake function and calibration.
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