The SINUMERIK 3 (also written SINUMERIK System 3) is a Siemens CNC control from the 1980s and early 1990s that was fitted to lathes, machining centres and milling machines from many European builders. It is a workshop-programmable control with NC program memory and the usual turning and milling cycles. Because it was widely installed, used SINUMERIK 3 machines still appear regularly on the second-hand market. Asset-Trade lists control variant, software version and available documentation in the machine data.
Check the exact control variant and software version, whether programs and parameters are documented, and whether manuals, PLC backups and tooling come with the machine. Drives, measuring systems and the control's backup battery should also have been maintained. Asset-Trade reviews these points in its multi-stage inspection and arranges an on-site demonstration so you can see the control running under power. A dedicated project manager coordinates the technical questions with the seller.
Prices depend on machine type, size, condition, equipment and whether the control has been maintained or retrofitted, so no single figure applies. Used machines with SINUMERIK 3 controls typically cost 40–70% less than comparable new equipment. Asset-Trade offers a free machine appraisal so you can judge whether the asking price matches the machine's condition and equipment.
A functional test under power is essential: reference the axes, run a test program, check spindle and feed behaviour, and confirm that the control stores and recalls programs and parameters. Asset-Trade carries out a multi-stage inspection with functional tests and can arrange an on-site inspection and demonstration at the machine's location. The inspection report documents the control's condition and any faults found.
Yes – Asset-Trade organises worldwide shipping and export, including loading, transport packaging and the export documents required for the destination country. Because older controls often come with documentation only in the original language, we clarify in advance which manuals and wiring diagrams are included. The 7-step purchase process covers the logistics from enquiry to delivery.
Retrofitting makes sense when the machine's mechanics are in good shape and you need modern functions, network interfaces or easier operator training; it is usually not worthwhile when drives, motors or measuring systems also need replacement. A common mistake is buying an old SINUMERIK 3 machine without checking whether manuals, parameters and PLC backups exist, which makes later service and training much harder. Asset-Trade helps you compare the retrofit cost against a comparable used machine and points out documentation gaps during inspection.
