need servo motor drive

[Karl_T]

I'm looking for a drive for my Hardinge CHNC lathe spindle. I'm installing a camsoft retrofit. Can someone tell me what product I need to order. I know nothing about drives.

I pulled the spindle motor and recorded all the name plate info:




MAGNA
Permanent Magnet DC Servo Motor
2 Monroe Ave.
Pittsford, NY 14534
H.K. Porter Co.
Warren, OH

Model: 193-18-0025-0
Frame: NR00166
Encl: T.E.N.V.
Duty: Cont.
Ins.Cl. H
Torque 242
RPM 0
JA-LB.IN.SEC.2(squared) .295
Max RPM 3500
Max Volts 118
Max.Arm.Pulse Amp. 1094
Tach. 31.5 Volts/1000 RPM
Spec. IFC 34-1 (1969)
Data Sheet K-8722
BR. Volt. 90 D.C.


Karl

[Al_The_Man]

New they are worth a few bucks, there is a used hardinge spindle amp on eBay right now for over $1,500.00, and a new one will cost upwards of $3,000.00, if you want to go new, contact your local Baldor dealer and give him the specs.
Perhaps a more cost effective way is to go VFD and a three phase motor, There are VFD's now that will come close to DC motor control with high torque at zero speed etc. if you go with a quality product like Mitsubishi or WEG.
Al.

[Karl_T]

Are you sure there's not a more reasonably priced option????

A VFD was my plan "A". Until I seen how little room there is for a spindle drive motor. The motor mounts on the end in a CHNC and must be a small diameter to fit. I've not seen a 3 phase motor in this arrangement. If they are made it would be a special order. And, I lose the brake on this motor.

Anyway, making a 3 phase motor fit will be a PITA at best. I'd rather just get a drive and avoid all the hassle.

Karl

[Al_The_Man]

Advanced Motion Controls have a PWM amp thats 100amp peak, 50amp continuous 100A25, You will need a large power supply however, if the old drive was SCR then there is no supply to be used from the old one, If it was PWM then you could salvage the supply from that.
Otherwise I would imagine Ebay as the only cheap alternative, there are older SCR drives that come up periodically cheap ~$200.00.
Al.