Nema 23, Dual Shaft Stepper Motor 570 Oz-in, KL23H2100-50-4BM

This is a fantastic Replacement stepper motor for anyone looking to replace or upgrade the stepper motors on a Torchmate 2 x 4 CNC plasma table you can make custom connectors to match the factory Torchmate ones by ordering the following parts, the connectors are Molex 39-01-2060 and the pins for the connectors are Molex 39-00-0039. My original stepper motors were model # MP-2303 These stepper motors were actually supplied to torchmate by Flashcut CNC a google search will take you to their website The controller is also supplied by Flashcut CNC "2.5 Amp Micro Stepping Compact CNC Controller" the Torchmate one that I have is the exact same thing just re branded with the Torchmate logo and a red and black enclosure, you can download the instruction/ service manual for this controller from the Flashcut CNC website as well. these controllers were factory set to only output 1.6 amps to the stepper motors the output can be increased to 2.5 amps by removing the controller cover and turning the potentiometer labeled R206 it is located on the top of each of the 3 driver cards If the motor appears to be underperforming or overheating the current output should be adjusted. This adjustment will increase the torque of the stepper motors minimizing if not eliminating binding or stalling of the gantry. To adjust the current output of the drive, using a micro phillips screwdriver rotate the potentiometer counterclockwise to increase the current output and clockwise to decrease the current output. NOTICE COUNTERCLOCKWISE INCREASES THE OUTPUT THIS MAY SEAM COUNTERINTUITIVE. I turned mine the wrong way the first time I made the adjustment and the stepper motors had no torque until I corrected this mistake and turned them counter clockwise which gave them significantly more torque than the factory stepper motors which are only rated at 454 oz in compared to these upgrades which are rated at 570. In regards to wiring the Molex connectors, my factory stepper motors were manufactured April-23-2011 and are of the 8 wire configuration. A later model machine or stepper motor may be different, the lead wires on my factory stepper motor are yellow, black, green, purple, white, brown, red, blue. This replacement stepper motor has only 4 wires Green, Blue, Red, Black. Since the original 8 wire stepper motor wires were coupled in pairs it is essentially a 4 wire stepper motor. Before wiring the new motor you should test it's power leads using a multi meter, it should be confirmed that continuity exists between the green and black wires and also between the blue and red wires these are the pairs that feed each of the two magnetic coils inside the stepper motor. Now for the wiring, take a look at the factory connector the green wire on the new motor will go in the same location on the molex connector as the black and yellow wires. below the Black and Yellow wires are the Red and Blue wires the black wire from the new motor will go in this location remember you should have continuity between the Green and Black wires. Now for the last two, to the right of the Black and Yellow wires in the factory wiring molex connector are the green and purple wires this location will be filled with the blue wire from the new motor and finally the brown and white wires which are below the green and purple wires will be replaced with the only remaining Red wire from the new stepper motor. You should also have continuity between the blue and red wires. Once your new Molex connectors are all wired up they should plug right in to the factory wiring unless Torchmate changed their Connectors on the latter model machines. Last I checked Torchmate wanted $299 a piece for replacement stepper motors Flashcutt CNC won't deal with you if you tell them you own a Torchmate or give them the serial number from your driver which links it back to Torchmate. At the time of my purchase these upgraded stepper motors were about $45 a piece with shipping a significant savings. The parts to make the Molex connectors cost about $20 While your upgrading or replacing the stepper motors it might be a good idea to replace the Gantry Bearings as well, You will need 16 of them I purchased a pack of 25 for around $20 here is the part number for the bearings ( R6-2RS (3/8" x 7/8" x 9/32") Metal Rubber Sealed Ball Bearing) Hope this helps someone keep their Torchmate running reliably and saves a bit of coin at the same time

Purchased to replace a 425 oz in motor that was running a heavy gantry at its upper limits. The test too know if I needed more motor was simple. simply jog the CNC and slowly apply body pressure by leaning on machine and if the motors stalls (spins internally without movement) then a larger motor is needed. This does not apply to smaller systems, just those pushing large weight.The gantry weighs about 100 IBS. The stepper motor purchased replaced the 425 oz in. This motor was tested in the same manner and passed without issue. *Large CNC machines should have enough inertia to move a average man out of way when leaning on it during movement. If not then the motor is at its maximum potential and may stall during deep cuts. While this method is non-complex or scientific, it highlights the point.

works great but you may need more than a 24V supply and the documentation is a bit sparse on that topic; of course most stepper motors are ;-)do a google on the model and voltage recommendations which "may" be much higher... wink wink... (I would put in a link but you know giving advice is touchy in litigation USA so do a quick search)watch your part numbers as just a slight difference at the end can mean you are getting 1/4" or 3/8" shafts with slightly different drive currents.

Excelent product at a good price..

Great powerfull little motors

Works as expected.

One came in with binding issues on the rotor / stator. Powerful, runs a bit loud (probably driver), overall good value though.

On time and as advertised