Re: Bobby, collector of stepper motor

I wished you lived next door so I could try out some heavy duty
steppers.

Dave



--- In CAD_CAM_EDM_DRO@yahoogroups.com, "ers2001ckk <chan@p...>"
<chan@p...> wrote:

> Hv been collecting stepper motor for the past 15 years with tons of
> it. Nema 42 only few pcs, Nema 34 >100 pcs. Nema 23 havin few 100+.
> Hv plenty of suplus supply in this tiny island in Singapore.
> I bought 60 pcs SUPERIOR M092 STEP MOTOR at a good bargain which was
> dismantled from telecommunication equipments, It is about 10 to 20
> years old motor. 30 pcs were found having faulty bearing.
> Superior electric M092-fc09/FD 2.5v, 4.6A hold 300 oz.in, 3/8"

shaft.

> When dismantling Stepper motor ensure to put the motor in a big
> plastic pan to protect metal dusts from being sucked by the

magnet.

> After changing both bearing, Do a burn in test using gecko 210

mounted

> on a 4"x2"x8"heatsink set at half step , Use Turbo CNC,set max.

speed

> at 20kpps run it on a 1000 mm travel slide with 20 mm ballscrew

pitch

> & run it for 2 hours non stop. After that i can hold the motor for

5

> seconds, it shows that it's not so hot.
> Step motor speed 3000 rpm, Linear speed at 2,362 inch per minute
>
> will do more step motor speed test for VEXTA PK2913,EASTER AIR
> DEVICES, API COMPUTMOTOR,PACI-SCI & use various drivers
>
> Cheers
>
> Jimson