Refitting a Grizzly G9972Z (Yangzhou Super Machine Tool Co CQ6128)

Parts list (Bummer, no edit for the initial post). By knowing the sizes, I can source most of this in other places...

Things that need to be replaced:
(10 ?) PLUBE001M - BALL OILER 6MM PRESS-IN 1.25 ea (P9972Z0108 BALL OILER)
(2) PCAP40M - CAP SCREW M8-1.25 X 35 (attaches saddle to apron) 1.00 ea
(1) DOWEL PIN 5 X 22 (P9972Z0315 LEADSCREW SHEAR PIN) my shear pin resembles brass... 2.20 ea
(1) PRP05M ROLL PIN 5 X 30 (fastens SHIFT HUB onto shifting fork shaft) 1.00 ea

Optional:
P9972Z0810 THREADED STUD M10-1.5 X 35 (fastens headstock down onto bed)
PN02M HEX NUT M10-1.5
 
I really wouldn't go with a fixed speed reducer that limits your top speed to 500rpm, as that will limit you if you want to turn smaller diameter work or softer materials. A variable speed motor (DC or 3ph with VFD) is a much better option. That way you can get your low low speeds but keep your top end.
 
Too much tool porn on flea buy. Many different Variable Speed Drives

Baah. DC motors it is... 90V Armature? I have 110v 20A, no desire to run 220 right now... Lots of red chinese stuff... 3/4 HP enough? The 11x26 has a YL8024 1HP 750W AC motor right now...
 
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the 3/4hp Consew motors have a big following and they're not that expensive - $100 or thereabouts.
 
CSM100x and CSM300x are 115v.
CSMx000 have synchronizer for needle positioning, the CSMx001 do not. Though I do not know what that is...

FESM550 3/4hp 550w Speed : 0-3600 RPM
CSM-1000 Brushless Servo Motor 3/4HP 0-3600 RPM
http://www.consew.com/View/Consew-Model-CSM1000

CSM-3001 Brushless Servo Motor 1HP 750w
 
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Enduro Pro SM650-1
http://www.endurosaves.com/enduro-pro-sm650-1.php

Non-Positioner Servo Motor
  • 110V
  • Single Phase
  • Cycles: 50/60
  • Watts: 0-800
  • Torque: 0-2.4 Foot Pounds
  • Variable Speed to 5000 RPM
The Enduro™ Pro SM650-1 Servo Motor is designed to meet almost all basic medium duty requirements of various industry/commercial sewing machines. It utilizes extremely powerful rare-earth Neodymium permanent magnets. The motor produces almost no noise, saves energy (60-80%) and is brushless, speed adjustable and durable. It provides a high starting torque even at low speed or from a complete stop.

By using a modern technologically advanced microprocessor, Hall sensor and Pulse-Width Modulation technology, the Enduro™ Pro SM650-1 can be set to rotate at different maximum speeds, in either normal or reverse directions, and can start with different accelerating speeds. It will stop automatically with any interruption such as in-line voltage, electrical surge, radio frequency interference or overloading. It is fully protected by the software and will give error messages indicating which problem is encountered. It even works well in environments with an unstable electrical power supply.

You are right about sensorless brushless motors and low startup torque. The "equivalent" to a brushed DC is a brushless DC with hall sensors. However these are manufactured overseas (typically) and the watts shown are the watts the motor consumes, not the actual output watts, which makes it very difficult to spec out. (ex: I have a local with a 2.something KW spindle, my 1hp bridgeport cuts much faster, and better) Don't buy anything you can't get a power curve from the manufacturer for.
:(
 
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