Good to have you here, I'm Mark. I have worked with many electric burr grinders, and Aicook keeps showing up in serious setups. The Aicook CG9400D is a conical burr grinder with a 40 mm steel burr and a 50 second timer.
A slow 450 rpm motor drives the burr, and a portafilter adapter comes in the box. The grinder offers about 40 grind settings and runs under 55 dB. Owners report that it works as stated and fits a portafilter well. Grounds can spray from the cup, and listings disagree on specs such as weight.
This review covers grind settings, cleaning and price, written and tested independently of Aicook. The sale price of $85.99 undercuts the OXO Brew at $109.99 and the Baratza Encore ESP at $199.95. Independent tests are scarce, so the verdict weighs listings and ratings.
What Is the Aicook CG9400D Grinder?
The Aicook CG9400D grinder is an electric conical burr coffee grinder, sold under the Aicook brand as model CG9400D-UL. The matte black stainless steel body carries FDA and UL marks. It targets home buyers who want one budget grinder for espresso and drip.
Retailer copy says the grinder handles espresso, drip, French press and cold brew. A portafilter adapter ships with it. That adapter lets the grinder dose straight into an espresso basket. The listings do not say which portafilter size the adapter fits.
The body measures 10.1 x 5.1 x 16.7 inches (25.7 x 13 x 42.4 cm). The 16.7 inch (42.4 cm) height may not fit under low cabinets. Walmart and StackSocial list the weight at 5.3 pounds (2.4 kg). The brand page lists 7.33 pounds (3.3 kg), which appears to be the shipping weight.
The listing claims UL and FDA certification. UL Solutions, formerly Underwriters Laboratories, is a safety testing lab. Its mark means samples passed tests for fire and electric shock hazards. The grinder runs on 120 volts, which suits North American outlets.
What Comes With the Aicook Grinder?
The Aicook grinder comes with a portafilter adapter, a flexible aluminum plate and an embedded cleaning brush. The aluminum plate fixes the grinding chamber in place. That keeps ground coffee from falling out of the collection cup.
The grinder holds beans in a 240 gram (8.5 oz) transparent bin. A 130 gram (4.6 oz) transparent bin collects the powder. Both bins let the user see the coffee level at a glance.
In the Box:
- Portafilter adapter for dosing into a basket
- Flexible aluminum plate that fixes the grinding chamber
- Embedded cleaning brush
- 240 gram (8.5 oz) transparent bean bin
- 130 gram (4.6 oz) transparent powder bin
Setup takes four steps. The user installs the hopper, installs the grinder, selects the precision and then selects the time. The one-touch timer starts the grind.
How Does the Aicook Grinder Work?
The Aicook grinder works with a high-torque motor that turns the burr at a slow 450 rpm. The motor draws 150 watts on 120 volts. A slow burr speed keeps friction low.
Low friction means less heat. A blade grinder spins fast and creates more heat. The Aicook's slow burr produces less friction and heat than a blade grinder. Less heat protects the flavor and aroma of the beans. The maker also credits the slow motor for the quieter running.
The grinder offers two ways to dispense:
- Timer: The user sets the grinding time from 0 to 50 seconds. One touch starts the grind. The grinder stops when the timer ends.
- Microswitch: The grinder dispenses ground coffee when the portafilter presses the switch.
What Burrs Does the Aicook Grinder Use?
The Aicook grinder uses a 40 mm (1.6 in) solid stainless steel conical burr. The cone-shaped burr crushes beans between two cutting surfaces. Crushing gives a more even grind than chopping.
A conical burr set has a cone-shaped inner burr and a ring-shaped outer burr. Beans fall between the two and get crushed. The gap between them sets the grind size.
Blade grinders work differently. They chop beans into uneven pieces. Burr grinders cut beans to a set size, and that set size makes the cup taste more consistent.
The burr in this grinder is removable. An embedded brush sits inside the grinder for clearing the cutting surfaces. The brush saves a trip to a separate tool.
How Many Grind Settings Does the Aicook Grinder Have?
The Aicook grinder offers about 40 grind settings plus micro settings. The brand page title says 42 settings. The listing text says 40, and StackSocial says 40+, so the exact count varies by listing.
The range runs from fine for espresso to coarse for French press and cold brew. Each main setting sets the size of the grounds.
Micro settings add small steps between the main ones. Espresso is sensitive to tiny changes in grind size, so dialing it in benefits most from those steps.
The hopper holds 8.5 ounces (241 g) of beans. A UV-blocking tint protects the roasted beans from light. The ground chamber holds enough coffee for 2 to 14 cups.
Does the Aicook Grinder Grind Well?
Yes. The Aicook grinder grinds well enough for casual home use, with a 40 mm burr aimed at uniform output. The maker claims precise and uniform grinding. No independent grind-size measurements turned up.
Owners describe the grinder as basic but dependable. They say it works as stated and holds the portafilter well for fresh shots.
A single run lasts up to 50 seconds. Espresso doses need only a short run.
The timer sets the dose by time, not by weight. A kitchen scale is the way to check what each run delivers.
Can the Aicook Grinder Make Espresso?
Yes. The Aicook grinder can make espresso grounds, since retailer copy lists espresso as a supported setting. The fine end of the range is the espresso zone. No independent shot test turned up.
The portafilter adapter grinds directly into the basket. A microswitch dispenses ground coffee when pressed. That layout suits a small home espresso setup.
Budget conical grinders rarely match premium models on espresso consistency. Buyers chasing repeatable shots should expect some tuning. Casual espresso drinkers will likely find it adequate.
How Loud Is the Aicook Grinder?
The Aicook grinder is not loud, rated under 55 dB. StackSocial lists that figure in its spec sheet. The brand describes the motor as far less loud than other products.
The low volume comes from the motor, which runs at 450 rpm. A slow motor makes less friction, and less friction makes less noise. Fast blade grinders spin much faster and run much louder.
The 55 dB figure is the maker's own number. No independent decibel test turned up for this grinder. Real-world noise also depends on the bean and the grind setting.
Is the Aicook Grinder Easy to Clean?
Yes. The Aicook grinder is easy to clean, with a removable burr, brush and washable cup. The parts come apart without tools. A dual structure keeps the cleaning simple.
The maker recommends a thorough clean of the grind units every week. Weekly cleaning removes old grounds and oils. Fresh grounds then taste cleaner.
The brush clears loose grounds after each use. The removable cup rinses under water. Wiping the hopper finishes the job.
How Do You Deep Clean the Aicook Grinder?
The Aicook grinder needs a deep clean every week: remove the burr, brush the chamber and let every part dry. Unplug it first. Only the grinding cup is listed as washable.
Water on the burr hurts grind quality, so a brush and a dry cloth do that job. Compressed air reaches the gaps between the burr teeth.
Weekly Deep Clean:
- Unplug the grinder.
- Remove the hopper and the removable burr.
- Brush the burr and the grinding chamber.
- Wipe the parts with a dry cloth.
- Rinse only the grinding cup, then dry it fully.
Cleaning tablets such as Urnex Grindz work on burr grinders. Set the grind three to four steps coarser, then run one 35 gram (1.2 oz) packet through. Follow with 40 grams (1.4 oz) of old coffee to flush the burr.
Aicook does not name approved cleaning products. Dry rice is a poor cleaner. Rice can hurt the burrs, damage the motor or clog the grinder with starch, and it may void the warranty.
Does the Aicook Grinder Make a Mess?
Yes. The Aicook grinder can make a mess, because grounds can spray out of the collection cup. Wasted grounds are the main flaw in the listings.
The maker's answer is an aluminum plate. The plate fixes the grinding chamber in place, so the powder stays in the cup. A secure fit keeps the counter clean.
Static is a second cause. Static charge pushes fine grounds around, and grounds can cling to the receptacle.
The Ross Droplet Technique cuts static. The user mists the beans with a tiny amount of water before grinding. The water carries the static charge away. Too much water can clump the grounds or harm the grinder.
What Do Aicook Grinder Reviews Say?
Aicook grinder reviews say the grinder works as stated, but the sample is small. The Walmart burr listing shows 26 five-star ratings, 6 four-star ratings and 2 one-star ratings. That adds up to only 34 ratings.
Five-star ratings make up 76 percent of the total. Four-star ratings make up 18 percent. The remaining 6 percent are one-star ratings. Most buyers who rated the grinder were happy with it.
The 34 ratings average about 4.6 out of 5. No buyer gave two stars or three stars.
The brand page shows a single review. Few independent sites have tested this model. No independent lab test turned up in searches. With so little outside testing, buyers should treat the scores as a rough guide.
What Do Owners Like About the Aicook Grinder?
Owners like that the Aicook grinder works as stated at a low price. Owners report no problems so far. Value for money is a recurring theme.
Espresso fans praise the portafilter fit. The grinder holds the basket well. It grinds only what each shot needs.
The feature list impresses for the price. A timer, a large hopper and 40 settings come standard. Rivals often charge more for fewer settings.
What Are the Common Complaints About the Aicook Grinder?
The most common complaints about the Aicook grinder are mess and unclear specs. Grounds spray from the cup. Wasted coffee frustrates owners. Cleanup after each grind adds a chore.
Listings also disagree on basic specs. The setting count reads 40 on some pages and 42 on others. The weight reads 5.3 pounds (2.4 kg) on some pages and 7.33 pounds (3.3 kg) on others.
Independent testing is scarce. Most information comes from retailer listings. That leaves long-term durability unproven.
Common Complaints:
- Grounds spray from the collection cup
- Listings disagree on settings and weight
- Few independent tests exist
How Does the Aicook Grinder Compare to Its Rivals?
The Aicook grinder compares well with its rivals on price, matching their 40 mm burr size. The OXO Brew has 40 mm stainless steel conical burrs and sells for about $110. The Aicook sale price is $85.99.
The OXO Brew has 42 grind settings, a 12 ounce (340 g) hopper and a 30 second timer. It costs $109.99. The Aicook offers about 40 settings and a 50 second timer for $85.99.
The savings come with a trade-off in support. Baratza and OXO sell through major retailers and publish warranty terms. The OXO Brew carries a two-year warranty. Aicook is a smaller name, and its brand page states no warranty length.
Rival Specs:
| Model | Burr | Settings | Timer | Warranty | Price |
|---|---|---|---|---|---|
| Aicook CG9400D | 40 mm conical | 40+ with micro steps | Up to 50 seconds | Not stated | $85.99 sale |
| OXO Brew Conical | 40 mm conical | 42 | 30 seconds | 2 years | $109.99 |
| Baratza Encore ESP | 40 mm conical | 40 stepped | None | 1 year | $199.95 |
Aicook Grinder vs Baratza Encore ESP: Which Is Better?
The Baratza Encore ESP is the better grinder for serious espresso, while the Aicook grinder wins on price. The Encore ESP uses 40 mm conical M2 steel burrs. It offers 40 stepped settings, 20 for espresso and 20 for filter.
The Encore ESP has a 70 watt motor and an 8 ounce (227 g) hopper. It has no timer, so the user doses by hand. A dosing cup fits 54 mm portafilters, and an adapter ring fits 58 mm ones.
The Encore ESP costs $199.95 and carries a one-year warranty. The Aicook costs $85.99 on sale. That saves about $114.
How Much Does the Aicook Grinder Cost?
The Aicook grinder costs $85.99 on sale at the brand store, down from a $129.99 list price. The brand page showed the grinder sold out at the time of writing. Prices move with promotions.
The sale takes $44, or about 34 percent, off the $129.99 list price. The brand page does not state a warranty length. Buyers should ask Aicook before buying.
Marketplace sellers charge less for the unit itself. An eBay listing asks $64.99 for a new grinder. Shipping adds $49.30, so the total reaches $114.29. That is $28.30 above the brand sale price, so the lower item price does not save money.
A StackSocial deal listed the grinder at $39.99 before it sold out. That deal offered one-year and two-year warranty add-ons at $7.99 and $9.99. Extended cover costs extra.
Listed Prices:
| Seller | Price | Note |
|---|---|---|
| Aicook store | $85.99 | Sale price, list price $129.99 |
| eBay seller | $64.99 | $49.30 shipping, $114.29 total |
| StackSocial | $39.99 | Deal sold out |
Where Can You Buy the Aicook Grinder?
Buyers can buy the Aicook grinder where Aicook, Walmart, eBay and StackSocial sell it. Walmart carries the burr model under a generic title. The eBay unit comes from a third-party seller, not from the brand.
Stock is unreliable. The brand page and StackSocial both showed the grinder as sold out. Buyers may need to check several stores.
Return terms differ by seller. StackSocial allows returns within 30 days of shipment. The eBay seller also allows 30 days, but the buyer pays return shipping.
Is the Aicook Grinder Worth It?
Yes. The Aicook grinder is worth it at the sale price for casual espresso and drip drinkers. The 40 mm burr, timer and portafilter adapter deliver real value.
The pros are clear. The price is low, the hopper is large, and cleanup parts come apart. The setting count is high for the cost.
The cons are real too. Grounds can spray from the cup, and independent tests are thin. Listings disagree on settings, weight and warranty terms.
Pros:
- Low price for a 40 mm conical burr
- One-touch timer up to 50 seconds
- Portafilter adapter included
- Large 8.5 oz hopper
Cons:
- Grounds can spray from the cup
- Few independent tests
- Listings disagree on specs
- No warranty length stated
The verdict rests on 34 ratings and spec sheets, not lab tests. Buyers should check the seller's return terms before buying.
Who Should Skip the Aicook Grinder?
Serious espresso buyers should skip the Aicook grinder and look at the Baratza Encore ESP. Repeatable shots need proven grind consistency. Baratza also supplies parts and support.
Anyone who wants a spotless counter should think twice. The spray complaint touches every grind. A secure cup fit may reduce it.
The brand page does not state a warranty length. Buyers who value cover should price an add-on. A known warranty brings peace of mind.
The Coffee Experiment is a reader-supported platform. Purchases made through our links may earn us an affiliate commission at no extra cost to you.