If you’re building your dream 2x72 grinder setup, the motor is where the muscle comes from — and the big question is: 110 volts or 220 volts?
We get this a lot, and the answer depends on your shop setup, your goals, and how soon you want to start throwing sparks. Here’s what you need to know.
First, What’s the Actual Difference?
Let’s break it down.
110V is your standard household outlet (in the U.S.). Plug it in, flip the switch, and go. No electrician required.
220V usually means access to a more industrial circuit (think welder plug, dryer plug, or dedicated shop circuit). More power, but may require a little electrical know-how.
Why Go With 110V?
Most Popular Choice
Over 90% of Diktator customers run their grinders on 110V. Why? Because it’s plug-and-play in almost any garage or shop.
No Special Wiring Needed
We ship the 110V VFD setups prewired and ready to plug into a regular 15 AMP outlet (just not a GFCI — those breakers can be too sensitive).
Perfect for Most Makers
Our 110V setups, especially with a 1.0 HP or 2.0 HP motor + VFD, give you variable speed and solid power for knife making, tool shaping, and fabrication.
When You Might Want 220V
Better Efficiency Under Load
Running on 220V can draw fewer amps and reduce strain on your electrical system — especially helpful if you're grinding for long sessions or using high belt pressure.
Higher HP Options
Some motor setups, especially 2.0 HP+ or future upgrades, benefit from 220V to perform at full potential.
Custom Shop Power
If your shop already has 220V, it's a no-brainer. Just note that our 220V motor packages come prewired without a plug, since there are too many plug types out there — you'll need to add your own.
Quick Notes
The 1.5 HP motor package without a VFD is 110V only.
All our VFD-compatible motors are 3-phase, even when running on 110V — the VFD converts the power for you.
Want to switch your VFD from 110V to 220V later? You can, but only a licensed electrician should make that change. Mistakes can fry the VFD.
Choosing the right drive wheel is just as important as motor voltage when dialing in grinder performance, especially when using 19mm bore drive wheels on a 2x72 setup.
If your grinder setup uses a 7/8 inch motor shaft, choosing the correct drive wheel is critical for proper fit, alignment, and performance.
For grinders using a 5/8 inch motor shaft, selecting the correct drive wheel ensures proper fit, smooth operation, and long-term reliability.
For makers who want increased belt surface speed and smoother tracking, 7 inch drive wheels and sets are a proven upgrade for demanding grinding work.
For compact grinder setups and tighter belt speed control, 4 inch drive wheels are a great option for 2x72 belt grinders, especially when precision and lower surface speed are needed.
Final Thoughts
For most garage-based knife makers, a 110V motor with a VFD is the sweet spot — easy setup, adjustable speed, and plenty of power. If you’re running a full-time shopa or planning long grinding sessions under heavy load, 220V might be worth the extra step.
Still unsure? Hit us up — we’ll help you pick the right setup for your grind.
