Why Mixer Size Matters
A commercial mixer is the most expensive single appliance in most bakeries, pizzerias, and commissary kitchens, and its size dictates what you can produce. A 20-quart mixer is a countertop workhorse for small batches; a 60-quart is a floor-standing machine that can handle 100 pounds of dough in one pass. Buying too small means endless batches and a strained motor; buying too big means wasted floor space, higher power requirements, and dough that sits too long.
The good news: mixer sizing follows predictable patterns, spec sheets for every major brand are on CookBidSpecs, and used mixers — especially Hobarts — are among the most sought-after items at restaurant equipment auctions.
The 20-Quart Countertop Mixer
A 20-quart mixer sits on a counter or sturdy stand. It is the largest size that is practical as a countertop unit; 5-, 10-, and 20-quart models share the same layout, with the 20-quart at the top of the range.
- Footprint: roughly 20 to 25 inches wide, 35 to 45 inches tall with the bowl.
- Power: about 1 to 1.5 horsepower on 115V/120V single phase in most cases, with some models in 208V.
- Capacity: about 12 to 15 pounds of bread dough per batch is realistic — never fill the bowl more than half full with dough, or about two-thirds with batter.
A 20-quart mixer suits a small bakery, a pizzeria, a restaurant doing in-house desserts, or a food truck: it plugs into a standard outlet, fits under a shelf, and one person can move it.
The 60-Quart Floor Mixer
A 60-quart mixer is a floor-standing machine on casters or legs, with a much heavier motor and gear train.
- Footprint: roughly 30 to 35 inches wide, 45 to 55 inches deep, and 60 to 70 inches tall.
- Weight: 500 to 800 pounds depending on manufacturer — not a machine you move by hand.
- Power: about 2 to 5 horsepower, typically 208V or 230V and often three phase.
- Capacity: about 40 to 50 pounds of bread dough per batch, or up to 60 quarts of batter.
It mixes a full batch of dough in a single pass, keeping dough temperature and consistency under control — which is why it is the workhorse of mid-size bakeries, pizza chains, commissaries, and hotel kitchens. The trade-offs are electrical requirements, floor space, and price: new 60-quart mixers cost several times a 20-quart unit.
What Fits Between: 30, 40, and 80 Quarts
The 20 and 60 are the most common sizes, but the market between them is deep:
- 30-quart mixers are floor models taking about 20 to 25 pounds of dough, popular in pizzerias that have outgrown a 20-quart but cannot justify a 60.
- 40-quart mixers handle roughly 30 pounds of dough and suit medium bakeries.
- 80-quart and larger mixers (up to 140 or 200 quarts) are for production bakeries and food manufacturers — three-phase power, planetary or spiral designs, and a loading strategy that involves more than one person.
If you are between sizes, go larger only if your electrical service can support it — adding a three-phase circuit can cost more than the price difference between mixers.
Bowl Capacity Rules
Mixer ratings describe the bowl, not what you can actually mix in it:
- Dough: fill the bowl one-third to one-half full — dough needs room to develop and climb the hook.
- Batters and frostings: up to about two-thirds to three-quarters full, since they do not expand like dough.
- Whipped products (meringue, cream): fill no more than half, because whipping doubles or triples volume.
Plan batches at 40 to 50 pounds of dough — a 60-quart bowl does not hold 60 quarts of dough — for consistent results and a longer-lived machine.
Attachments: Beater, Whip, and Dough Hook
Every planetary mixer comes with three basic tools:
- Flat beater: for batters, frostings, mashed potatoes, and general mixing.
- Wire whip: for eggs, cream, meringue, and anything that needs air whipped in.
- Dough hook: for bread, pizza, and pasta dough. Standard hooks are C-shaped; spiral hooks (common on larger machines and European designs) knead more efficiently and handle stiff doughs better.
Also consider a bowl guard with interlock — mandatory in many jurisdictions — and add-ons like a meat grinder or vegetable slicer if your menu needs them. Attachments are not always interchangeable between brands or sizes, so check the spec sheet on CookBidSpecs to confirm what fits.
Power and Electrical Requirements
This is where buyers get burned: a 20-quart mixer often runs on 115V and plugs into a standard outlet, but many commercial models are 208V, and a 60-quart is almost always 208V or 230V, frequently three phase. Before you buy, confirm:
- Voltage and phase on the nameplate or spec sheet
- Amperage draw and breaker size required
- A dedicated circuit at the planned location
- Clearance for the bowl to swing and tilt out
A three-phase 60-quart mixer in a single-phase building is a very expensive paperweight. Check your electrical service before you fall in love with a machine.
Safety: Bowl Guards and Training
Commercial mixers are powerful enough to injure seriously, and mixer accidents are among the most common kitchen injuries. Buy a machine with a bowl guard and an interlock that stops the motor when the guard is open, and train staff to never reach into a running bowl. Used mixers sometimes come with missing guards; factor the cost of a replacement into your bid.
Brands to Know
Hobart dominates the commercial mixer market — its 20- and 60-quart models are everywhere, parts are easy to find, and used Hobarts hold value better than any other brand. Univex and Globe build solid, less expensive alternatives with similar specs. When comparing brands, compare the gear train, bowl guard design, and parts availability, not just the sticker price.
New vs Used: Mixers at Auction
Used mixers are one of the safest used-equipment purchases you can make, because the design is simple and durable — a mixer that runs and shifts gears cleanly will likely run for years, and 60-quart Hobarts regularly sell for a fraction of new. Before bidding:
- Look up the model on CookBidSpecs for voltage, phase, horsepower, and bowl capacity
- At preview, run it through all speeds and both directions
- Check the bowl, beater, whip, and dough hook for wear
- Confirm the bowl guard and interlock are present and working
Mixer Buying Checklist
- Batch size and daily volume, to set bowl size
- Countertop (20-quart) vs floor model (30-quart and up)
- Voltage, phase, and amperage vs your electrical service
- Dough hook style (C-hook vs spiral) for your dough
- Bowl guard with interlock
- Attachments needed for your menu
- New vs used price, with spec verification on CookBidSpecs
Match the bowl to your biggest batch, the power to your building, and buy the most durable machine you can afford — a good mixer outlasts every other appliance in the bakery.