Hurco VM Series Maintenance And Safety Manual page 21

Spindle Motor
The belt-driven spindle motor and spindle are coupled using a no-slippage gear belt. The
motor is fully enclosed, uses forced-air cooling, and has no brushes to inspect or replace.
To allow the machining of a variety of parts, the spindle RPM is specified in the part
program. A manual spindle speed override on the control console permits fine-tuning of
the spindle RPM for a specific machining cycle, without changing the part program.
VM5
VM10
VM10G
VM10P
VM10U
VM20
VM30
Table 1–10. Spindle Drive/Belt Ratio
VM Series Maintenance and Safety Manual
Main Spindle
Machine
Max RPM
8000
10000
20000
30000
12000
10000
10000
10000
704-0212-209
Main Spindle
Drive/Belt Ratio
1:1
1:1
NA
NA
1:1
1:1
1:1
1:1
Machine Components 1- 11