Castings and their weight
Ask casting grade, machine weight and stress relief. Weight is the cheapest honest proxy for rigidity.
No DramaBuyer guide · Metal & CNC
Dozens of Chinese builders sell a VMC855, so the model name tells you the size class and nothing about the castings, spindle or ballscrews that decide accuracy after a shift.

01
Ask casting grade, machine weight and stress relief. Weight is the cheapest honest proxy for rigidity.
Box ways damp heavy cuts on steel; linear guides move faster. Both are sold under one model name. Ask which, and the guide maker.
Ask the spindle maker, maximum speed, BT30 or BT40 taper, and whether the spindle is cooled.
Some listings name two controller makes in one title. Write the make and model into the contract.
Count tools, and ask whether a chip conveyor is included.
02
Send these with the enquiry. Without them, any number a factory gives you is a guess dressed as a quotation.
03
| Require this | A pass looks like |
|---|---|
| Machine your part after a warm-up, then again after two hours of running. | Both parts measure inside tolerance, with no drift between them. |
| Ask for a ballbar or positioning test on this serial number. | Results are within the figure in the contract, measured to a named ISO 230 method. |
| Read spindle, guide and controller nameplates. | They match the contract. |
04
05
A CNC lathe.
A metal CNC router with a heavy frame, which gives more area per euro.
06
We name the kind of source, how many and when, and never the factory. Listed prices are asking prices, not landed cost. Where we do not hold a fact we say so: that is a GAP, not an estimate.
07
Every machine we source in this area is on the Metal & CNC page. How a project runs, stage by stage, is on how it works, and what it costs is on pricing.
Straight answers
Many share spindle, guide and controller makers. Castings, assembly, thermal behaviour and service differ. Measure drift over hours, not the first part.
Nameplates, casting weight, your part measured cold and after running, a positioning or ballbar report, door interlocks and the tool changer.
A Declaration of Conformity for this serial number citing the machining centre standard, and a manual in your language.
Usually you. You check the documents match the machine and your name appears on it or its papers.
Contact
Send a machine, a quotation you want checked, or a question. We reply with what we would look at first.
Sent
A person reads every message. You will hear back within one working day.
Not sent
Please email info@nodramachina.com directly and we will pick it up from there.