    
Mike Richards
Registered
Username: Richards
Post Number: 75
Registered: 05-2006
| | Posted on Monday, March 05, 2007 - 02:07 pm: | 
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The G320 is the Gecko drive for brushed servo motors. (They also offer the G340, which has a pulse multiplier built in; however, the pulse multiplier causes problems when you make very small moves.)
The motor is rated at about 170 oz*in of torque - not nearly enough for use on a CNC router unless you gear it down substantially. It also runs at 4000 RPM (no load) which is useless on a CNC router using rack and pinion unless you gear it down substantially. You can only use about 400 RPM at the pinion gear (which would give you about 30-inches per second jog speed).
So, if you geared the motor down at least 10:1, you would end up with about 400 RPM. The trick will be building or buying a 10:1 gearbox. Most likely a commercial box will cost very close to $1,000. Building a belt-driven box is not difficult, but it would be bulky because it would require at least two stages. |
Motors