FS: Servo Motor suitable for sherline or mill drill sized machines

If this message appears twice please accept my apology!

Mid summer cleaning (need space in my shop for a hot project)

http://www.grifftek.com/yaskawa/servo_topview1.jpg
http://www.grifftek.com/yaskawa/servo_topview2.jpg

These are really nice smaller servos with encoders. I have sent one
to Mariss for analysis and the details follow at end of message.

I have run this motor on both the G320 and G340 servo drives using
Ahha Artisan CNC and they run very nicely.

Mariss also calculated performance on a sherline being about 150 ipm
direct drive 1/4-20 leadscrew with 236 lbs push at 150 ipm
Bear in mind that I do not recommend that you run a sherliine at
these rates. I think you can get acceptable performance on a mill
drill or other similar sized machine with these motor using a belt
reduction. There is already a pulley on the motor shaft.

I have odds and ends of other servos w and w/o encoders that will run
on the geckos as well as linear rails and ballscrews. Please contact
me off list with your requirements and I will let you know if I have
anything that will work for you. I do not have an inventory sheet,
sorry.


Please contact me directly if interested at bill at grifftek.com


Here is the data from Mariss

Sent: Monday, June 24, 2002 4:23 PM
Subject: Re: Servo Motor


Bill,

Here's your data:

Kv = 13.4V / KRPM
Kt = 18.0 in-oz / Amp
Rt = 4.8 Ohms

My guess is it is a 48VDC rated motor. If so, then:

NL speed = 3600 RPM @ 48VDC
Stall torque = 180 in-oz @ 10A
Peak power = 120W, 90 in-oz @ 1800 RPM
Cont power = 67W, 30 in-oz @ 3000 RPM
Cont current = 1.67A
Encoder = 900 line quadrature TTL

Did you want the motor back or do I keep it? I forget.

Mariss