Astra MG050 Coffee Grinder Review: Is It Worth It?
Hi, Sam here, and today I look closely at the Astra MG050. I brew a latte before we open, and my morning cup shows me a lot about commercial espresso grinders. The MG050 is a semi-automatic espresso grinder from Astra Manufacturing, built for cafes. It has twin 64 mm (2.5 in) flat burrs and a 3.3 lb (1.5 kg) hopper. Dealers sell it for $1,029.
The grinder doses with separate single and double settings and has a built-in telescopic tamper. Astra publishes no grind size range, noise level or grams per dose. The few owner reports mention loose clips, a loose handle and doses that vary. The silent Astra models cost more but run quieter.
Look for burr size, doser and tamper and owner reports below, in a review nobody paid for. The MG050 suits a small cafe with a trained barista. Home users, noise-sensitive buyers and shops that need a certification mark have better options.
What Is the Astra MG050 Coffee Grinder?
The Astra MG050 is a semi-automatic espresso coffee grinder from Astra Manufacturing, sold for cafes and small coffee shops. The body is cast aluminum. A switch starts the grinding by hand, and a sliding tray catches stray grounds.
Trade buyers call this type a grinder-doser. Ground coffee drops into a chamber called the doser. A lever then releases one dose into the portafilter, the handle that holds the coffee basket.
Astra Manufacturing lists its office on Ambassador Drive in Naperville, Illinois. The company also sells espresso machines and steamers. A shop can buy a grinder and a machine from the same maker.
Astra places the MG050 in its MEGA line of grinders. The same line holds the MG053, MG030 and MG049, which add automatic or silent operation.
The hopper holds 3.3 lb (1.5 kg) of beans. A slide gate lets the hopper come off while it is still full. A finger guard covers the burr opening, so hands stay clear of the grinding parts.
Dealers pitch the grinder at medium-volume service, such as boutique bakeries, office cafes and specialty coffee shops. Astra does not sell it as a home grinder.
What Burrs Does the Astra MG050 Use?
The Astra MG050 uses twin cutting, stainless steel flat burrs that measure 64 mm (2.5 in) across. Flat burrs of this size are common in cafe grinders, and they cut beans between two parallel rings.
Astra says the MEGA motor is built for a better grind with less heat.
The maker gives no figure for grind size, burr coating or burr life. A new owner therefore has no stated number for how long the burrs will last.
Grind size is adjustable. The spec sheet lists no number of steps and no micron range for the setting.
How Does the Astra MG050 Work?
The Astra MG050 works as a semi-automatic grinder, where the barista starts the grind and the doser holds the grounds. Beans fall from the hopper into the burrs. The ground coffee drops into the doser below.
The doser holds the grounds until a portafilter is ready. A normal shot starts with the portafilter locked under the doser spout. The barista pulls the lever to drop one dose into the basket, then presses it with the tamper.
Because the grinder is semi-automatic, the barista switches the motor on and off by hand. Astra publishes no timer, so the barista decides when the grind stops.
A stroke counter tracks how many times the doser lever is pulled. Dealers say the count helps with maintenance and recipe repeat.
Not every ground makes it into the basket. The sliding tray is extractable. The tray collects grounds that miss the portafilter, and it pulls out for emptying.
How Does the Astra MG050 Dose Coffee?
The Astra MG050 doses coffee with a doser that has separate, adjustable single and double settings. Each setting changes on its own, so a double does not depend on the single.
The grinder logs its output with a dosage counter and a stroke counter. Neither counter shows grams, so neither one tells a new owner how much coffee goes into a shot.
The doser also stores grounds between shots. Some coffee therefore sits there during slow hours. Astra publishes no doser capacity, so counting the lever pulls on the first day gives the figure.
Astra also publishes no gram weight per stroke. One owner reports that preset amounts sometimes came out different. Because of that, a scale check on the first day is sensible.
What Does the Astra MG050 Tamper Do?
The Astra MG050 tamper is a telescopic tamper that keeps the same pressure on the coffee each time. Astra built it into the grinder as the only named accessory.
The fixed pressure matters most in a busy bar. Every barista presses with the same force, so shots stay consistent from one person to the next. Astra gives no pressure figure for the tamper, though.
Fit is the other open question. Astra names no basket size for the built-in tamper. A buyer with a non-standard basket should ask the dealer about fit before ordering.
What Are the Astra MG050 Specs?
The Astra MG050 specs list a 350 W motor, 1,400 RPM, 64 mm flat burrs and a 3.3 lb (1.5 kg) hopper. The case measures 7.1 in wide, 13.4 in deep and 21.7 in tall (18 x 34 x 55 cm).
Astra lists the weight at 35 lb (15.9 kg). Dealer pages show 32 lb (14.5 kg) and 38 lb (17.2 kg), which are shipping or packing weights.
Key Specs:
| Spec | Value |
|---|---|
| Motor | 350 W, 1,400 RPM |
| Burrs | Twin 64 mm (2.5 in) stainless flat |
| Hopper | 3.3 lb (1.5 kg) |
| Size | 7.1 x 13.4 x 21.7 in (18 x 34 x 55 cm) |
| Weight | 35 lb (15.9 kg) |
| Plug | 120 V, NEMA 5-15P |
The grinder is black, uses a switch for control and ships with the tamper.
What Power Does the Astra MG050 Need?
The Astra MG050 power need is 350 W at 120 V, drawing 4.0 amps through a standard NEMA 5-15P household plug. The plug fits a normal US wall outlet.
Simple math puts 350 W at 120 V near 2.9 amps. Astra lists 4.0 amps, which is the figure to use when planning the circuit.
Astra's warranty terms ask for a dedicated power circuit for the grinder. A dedicated circuit means the grinder does not share its power line with other equipment.
Safety marks are a separate matter from power. No UL or ETL mark appears in the dealer listings for the MG050. The Rosito Bisani F5GM, a rival of the same hopper size, lists NSF and ETL.
Does the Astra MG050 Grind Well for Espresso?
Yes. The Astra MG050 grinds well for espresso, and its 64 mm flat burrs match the size cafes expect. No independent shot test backs the claim yet.
No particle size chart, retention weighing or timed shot of the MG050 turned up. Without that testing, grind quality rests on the maker's description and the burr size.
One owner offers the only firsthand view. They call the coffee really good once the controls are learned. Dealers add that the grinder also suits pour-over and filter coffee.
The doser design affects freshness. A doser holds ground coffee in a chamber between shots. In slow periods, older coffee sits at the bottom and mixes into later shots. Astra publishes no retention figure for the MG050, so how much old coffee stays behind is unknown.
Does the Astra MG050 Grind Fine Enough?
Yes. The Astra MG050 grinds fine enough for espresso, because Astra sells it as an espresso grinder with adjustable grind size. The maker publishes no micron range.
The 1,400 RPM motor turns slower than many small grinders. Astra gives no grams per second, so shot-to-shot speed is unknown.
Baristas dial in by taste and shot time, and the same method applies here. Expect a few wasted doses at setup.
What Do Owners Say About the Astra MG050?
Owners say the Astra MG050 makes very good coffee but takes time to learn. Few owner reviews exist, and most dealer pages show none at all.
One owner calls the grinder very complex at first. The same owner says it makes really good coffee. The complexity, then, seems to be a hurdle at the start and not a flaw in the results.
Another owner says everything has been smooth. The report is short, but it shows that not every owner struggled with the machine.
Reddit threads on Astra grinders exist, but the pages could not be read for this review. Because of that, only the few reviews above are available as evidence.
What Are the Common Complaints About the Astra MG050?
The common Astra MG050 complaints are loose clips, a loose handle and doses that vary. All three come from one owner report, so they are a warning and not a proven pattern.
The clips fell off both sides of the grinder and kept falling off after reattaching. The handle felt loose, possibly from lost washers.
Reported Problems:
- Clips that fall off both sides
- A loose handle
- Preset doses that come out different
No noise, retention or clumping complaint was found. The same gaps mean those traits are unknown.
How Does the Astra MG050 Compare to Rivals?
The Astra MG050 compares closely to rival grinders, including Astra's own MEGA models and the Rosito Bisani F5GM. All four share a 3.3 lb (1.5 kg) hopper and a 350 W motor. They differ in how they dose and in size. The models named are:
- Astra MG053: An automatic grinder.
- Astra MG030: A silent automatic grinder.
- Astra MG044: Also a silent automatic grinder. The MG044 starts grinding every six shots and stops when the doser is full.
- Rosito Bisani F5GM: A semi-automatic grinder like the MG050. The F5GM is 9.5 in (24 cm) wide against 7.1 in (18 cm) for the MG050. The F5GM carries NSF and ETL marks.
Grinder Comparison:
| Grinder | Operation | Hopper | Price |
|---|---|---|---|
| Astra MG050 | Semi-automatic | 3.3 lb (1.5 kg) | $1,029 |
| Astra MG053 | Automatic | 3.3 lb (1.5 kg) | About $1,440 |
| Astra MG044 | Silent automatic | 3.3 lb (1.5 kg) | $1,439.90 |
| Mazzer Super Jolly V Up | Timed doser | 2.4 lb (1.1 kg) | $1,545 |
The Mazzer Super Jolly V Up is a classic 64 mm rival. Seattle Coffee Gear lists it at $1,545 with hardened steel flat burrs and a 350 W motor. Its hopper holds 2.4 lb (1.1 kg), and its dosing is timed with programmable single, double and triple buttons.
The gap puts the MG050 about $516 under the Super Jolly V Up. The Super Jolly has far more independent test coverage, while the MG050 has almost none.
How Does the Astra MG050 Differ From the MG053?
The Astra MG050 differs from the MG053 in operation, because the MG050 is semi-automatic and the MG053 is automatic. The body, motor, burrs and weight match.
Both grinders list a telescopic tamper, a 7.1 in (18 cm) width and 1,400 RPM. The only change is how the machine starts and stops.
The MG050 sells for $1,029. The MG053 sells for about $1,440, which is a gap of about $411. The extra money buys automatic starts and stops.
Who Should Avoid the Astra MG050?
Home users and noise-sensitive buyers should avoid the Astra MG050. The grinder is a 35 lb (15.9 kg) commercial unit that stands 21.7 in (55 cm) tall.
Buyers who need a quiet grinder have better picks in Astra's silent line. Buyers who need a certification mark should look at the F5GM.
The $1,029 price is far above common home grinders. Buyers who want proof of grind quality before paying will find little independent data.
Who Should Skip It:
- Home users
- Noise-sensitive buyers
- Buyers who need a certification mark
- Buyers who want independent test data first
A home buyer has cheaper picks. The Eureka Mignon Specialita has 55 mm flat burrs and a 310 W motor, and Clive Coffee lists it at $549 in the US.
Is the Astra MG050 Quiet Enough for Home?
No. The Astra MG050 is not sold as quiet enough for home use, and no decibel figure exists. Astra reserves the silent label for the MG030 and MG044.
The MEGA motor is described as efficient with less heat. The claim says nothing about how loud the grinder is.
A home buyer who grinds early in the morning is better served by a silent model. A cafe with background noise will hear far less difference.
How Much Does the Astra MG050 Cost?
The Astra MG050 costs $1,029 at several US dealers. One dealer shows a list price of $1,470 and a 30% discount of $441.
Another dealer lists $1,336 as the regular price. The street price stays at $1,029 across the pages checked.
One large restaurant supplier marks the MG050 as no longer available. Stock varies by dealer, so check before ordering.
Prices Found:
| Price | Type |
|---|---|
| $1,029 | Street price at several US dealers |
| $1,336 | Regular price at one dealer |
| $1,470 | List price at one dealer |
The $1,029 price covers the grinder with its built-in tamper. Astra lists no replacement burr price, and no burr set for the MG050 turned up in dealer listings, so wear costs are unknown.
Does the Astra MG050 Have a Warranty?
Yes. The Astra MG050 does have a 1-year warranty on US purchases, as Astra states for all of its grinders. One dealer lists 2-year parts and 1-year labor, which is Astra's machine term.
Registration must reach Astra within 10 days of installation. The warranty does not transfer to a second owner.
Gaskets, handles, knobs and similar wear items are excluded. Claims start with a call to Astra support, and the buyer pays return shipping.
Claim Steps:
- Register the grinder with Astra within 10 days of installation.
- Call Astra Technical Support at 877 340 1800 when a problem appears.
- Get approval from Astra before returning any part.
- Send photos or parts if Astra asks, and prepay the return shipping.
Is the Astra MG050 Worth It?
Yes. The Astra MG050 is worth it for a small cafe with a trained barista. The grinder is not worth it for a typical home.
A cafe gets a semi-automatic grinder with 64 mm burrs and a built-in tamper for $1,029.
The strengths are the large burrs, separate single and double doses and the cast aluminum body. The weaknesses are no independent test data and a thin owner record.
Buyers should ask the dealer about the clip and handle reports before ordering.
Pros:
- Large 64 mm flat burrs
- Separate single and double doses
- Built-in telescopic tamper
- Cast aluminum body
- Lower price than the automatic MG053
Cons:
- No independent test data
- Thin owner record
- Reports of loose clips and handle
- No certification mark listed
- Not sold as a quiet grinder
Is the Astra MG050 Worth the Price?
Yes. The Astra MG050 is worth the price of $1,029 for a cafe, because it costs about $411 less than the automatic MG053. The saving suits a bar with a human barista.
A cafe makes many shots each day, so the cost of the machine is spread across all of them. A home user makes far fewer shots. The same price therefore weighs much more on a home budget.
The risk is the unproven owner record at this price. Few owners have reported on how the machine holds up over time. A short trial or a dealer with a return window lowers that risk.
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