Shopping Cart
Your Cart is Empty
There was an error with PayPalClick here to try again
CelebrateThank you for your business!You should be receiving an order confirmation from Paypal shortly.Exit Shopping Cart



2X72 BELT GRINDERS          [email protected]    503 830-2492

variable frequency drives

how they work ........ please read before you call me at 3 am and ask why I sent the wrong motor .it could happen lol.

sometimes I get calls ,and the question is why did you send me a 220 volt 3 phase motor . I don't have 220 volt and I definitely don't have 3 phase power in my residential home . I did send you the right stuff .

the answer is if you want a variable speed drive to control your motor this is how they are set up .

the drive acts as a phase converter

1 phase to 3 phase & sometimes a step up from 110 to 220 

the drive takes 1 phase 110V / 220V converts it to 220 volt 3 phase power to run the motor .

the speed is regulated by varying the HZ sent to the motor . ac electric power has a 60 hz frequency per second . drives lower this frequency to slow down the speed . for example a motor that is 220 V 3 phase 60 hz rpm 3450 at 60 hz will turn at 3450 rpm & 30 hz = 1725 rpm 15 hz = 862.5 .and at 0 hz the rpm will be 0

the amount of power needed to run a belt grinder just would not work with a simple 110 volt dimmer switch . besides the 110 volt 1 phase motors have a big capacitor that would blow up if you did try it .


& IP 51

NEMA 4 Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against access to hazardous parts; to provide a degree of protection of the equipment inside the enclosure against ingress of solid foreign objects (falling dirt and windblown dust); to provide a degree of protection with respect to harmful effects on the equipment due to the ingress of water (rain, sleet, snow, splashing water, and hose directed water); and that will be undamaged by the external formation of ice on the enclosure.


kbac-24 now included with ph427

standard model . 

nema 4 drive for you ph427

1 hp

great drive ,rugged aluminum enclosure . rated for indoor / outdoor , will withstand ,rain , splashed water ,spilled coffee,dust and metal chips.

fully enclosed aluminum case dust/liquid splash proof nema 4 new in box with mfg warranty 

kbac27 NEMA 4

110 V up to 1.5 hp

220 V for 2 hp

this is the standard dive you will get with all 1.5 hp or 2 hp upgrade orders .

great drive ,rugged aluminum enclosure . rated for indoor / outdoor , will withstand ,rain , splashed water ,spilled coffee,dust and metal chips.

Lenze AC Tech SMVector

availble in 1 hp to 3 hp 

ESV112N01SXC Lenze AC Tech SMVector 1.5 HP (1.1 kW), 120-240V single phase input NEMA 4 (IP65) 

out all the drives I have used over the years this is the best overall performer . speed regulation is precise down to the 10th of a second . has ramp up and ramp down that can be set to stop or start the drive at a set speed . I have mine set at 7 seconds start and 10 seconds to stop .

I use a 3 hp 220volt ac tech nema 4 to run my 2 hp stainless steel BALDOR motor . I push that motor hard ,lean into it and run it at top speed 7500 SFPM and it will push right through everything I throw at it .

I used a baldor VS1MX nema 4 harsh duty and a kbac 27d and neither came close to this drive .

in my opinion this is a far superior variable speed drive compared to the kbac series drives . optional speed potentiometer can be set up on these drives as shown in first picture

if you want a a reliable tough drive then this is it . highly recommended. 

1.5 hp drive 115 volt input

2 hp drive 220 volt input

Upgrade from kbac 27d                85.00