- roll bearing at basement is built round a double column provides max. rigidity and accuracy.
- spindle main gear are made of SCM material all through harden and precision , It reinforced b rubs. It provided a positive, rocking proof foundation format, stability.
- Bed is solid construction, it reinforced by rubs. It provided a positive, rocking proof foundation format, stability.
- column is duplex type. The inner cylinder has a thick wall and reinforced by ribs.
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