CAD CAM EDM DRO - Yahoo Group Archive

Mariss' Surplus Center Motor - Thanks

Posted by vrsculptor
on 2003-10-21 17:53:39 UTC
Mariss,
Thanks for the tip on the Surplus Center motors. I got two of them.
They are Pacific Scientific treadmill motors, real well built. They
spin at about 30 rpm with a single D-cell. They have flat endplates
with 2 1/4-20 through boltssoend mounting them will be a layup.

I'm planning on using one as a knee motors on my large servo mill.
If its well enough built to run on a flashlight battery it should
have no problem with 76 volts at 10 amps. I unfortunately won't have
any time until after Thanksgiving to mount an encoder and do real
testing.

I just hope it can lift a 1,200# table/knee with a 2 or 3:1 belt
reduction on the motor and a built in 10 turns/inch helical
gear/ballscrew jack. The knees ways are turcite lined and pretty
slippery.

Roger S.

Mariss wrote:
"I stumbled across this motor:

http://www.surpluscenter.com/item.asp?UID=2003070308293941&item=10-
1931&catname=electric

It's rated at 4800 RPM at 120VDC with a continuous rated torque of
250 in-oz. Working the numbers gives a Kv of 25 volts / 1,000 RPM
and a Kt of 33.8 in-oz per Amp.

At 72 volts you would get 2,880 RPM and draw 7.4 Amps at its rated
torque. The power output would be 533 Watts or about .71 HP. I don't
have this motor nor have I tested it with our G320 drive but it may
work.

At $24.99 it may be worth a gamble.

Discussion Thread

vrsculptor 2003-10-21 17:53:39 UTC Mariss' Surplus Center Motor - Thanks Mariss Freimanis 2003-10-21 20:40:18 UTC Re: Mariss' Surplus Center Motor - Thanks piggy 2003-10-22 08:17:28 UTC Re: [CAD_CAM_EDM_DRO] Re: Mariss' Surplus Center Motor - Thanks Kim Lux 2003-10-22 08:18:34 UTC Re: [CAD_CAM_EDM_DRO] Re: Mariss' Surplus Center Motor - Thanks Mariss Freimanis 2003-10-22 09:51:47 UTC Re: Mariss' Surplus Center Motor - Thanks vrsculptor 2003-10-22 09:58:28 UTC Re: Mariss' Surplus Center Motor - Encoders Kim Lux 2003-10-22 12:12:13 UTC Re: [CAD_CAM_EDM_DRO] Re: Mariss' Surplus Center Motor - Thanks piggy 2003-10-22 12:13:25 UTC Re: [CAD_CAM_EDM_DRO] Re: Mariss' Surplus Center Motor - Encoders vrsculptor 2003-10-22 13:00:00 UTC Re: Mariss' Surplus Center Motor - Encoders turbulatordude 2003-10-22 14:36:59 UTC Re: Mariss' Surplus Center Motor - Encoders - location skykotech 2003-10-22 14:49:27 UTC Re: Mariss' Surplus Center Motor - Encoders vrsculptor 2003-10-22 15:36:26 UTC Re: Mariss' Surplus Center Motor - Encoders - location - Long mmeyers1111 2003-10-22 19:34:52 UTC Re: Mariss' Surplus Center Motor - Encoders Pat Bearss 2003-10-23 07:36:12 UTC Re: Mariss' Surplus Center Motor - Encoders