Sun Joe TJ604E or Earthwise TC70016? Which Is Better for Garden Tilling?
If you are choosing between the Sun Joe TJ604E and Earthwise TC70016, the two are surprisingly close. Both are corded electric tillers with 13.5-amp motors, an 8-inch maximum tilling depth, and a 16-inch maximum working width. The main difference is flexibility: the Earthwise TC70016 offers an adjustable 11- to 16-inch width, while the Sun Joe TJ604E keeps a fixed 16-inch width but has a slightly faster 370-RPM tine speed and a foldable handle.
For most gardeners, I would choose the Earthwise TC70016 for garden tilling when adjustable width matters, especially for working around vegetable rows and tighter spaces. The Sun Joe TJ604E is the better fit if you want a simple full-width tiller with a foldable handle and easy storage.
Sun Joe TJ604E vs. Earthwise TC70016 at a Glance
| Feature | Sun Joe TJ604E | Earthwise TC70016 |
|---|---|---|
| Power | 13.5 amps | 13.5 amps |
| Power source | 120V corded | 120V corded |
| Maximum width | 16 inches | 16 inches |
| Adjustable width | No | Yes, 11–16 inches |
| Maximum depth | 8 inches | 8 inches |
| Tines | 6 steel tines | 6 adjustable steel tines |
| Tine speed | 370 RPM | 360 RPM |
| Handle | Foldable | Ergonomic handle |
| Best feature | Full 16-inch tilling path and foldable storage | Adjustable working width |
| Warranty | 2 years | 2-year limited warranty |
The manufacturers’ specifications show that these machines are built for very similar jobs. The Earthwise has six adjustable tines and an 11- to 16-inch working width, while the Sun Joe has six steel tines, a 16-inch maximum width, and an 8-inch maximum depth.
How Similar Are These Two Tillers?
Very similar.
Both machines sit in the same general category: corded electric tiller/cultivators designed for garden beds, flower beds, soil preparation, and cultivation.
The power difference is not really a difference at all. Both use 13.5 amps, so you should not choose one simply because its motor sounds more powerful.
The more meaningful differences are their tine design, working width, handle design, and how you plan to use the machine.
Power and tilling performance
The Sun Joe TJ604E uses a 13.5-amp motor with a listed no-load speed of about 370 RPM. The Earthwise TC70016 uses a 13.5-amp motor and lists a tine speed of 360 RPM.
That small RPM difference should not be treated as proof that the Sun Joe will always till better. Actual performance depends heavily on soil condition, moisture, roots, compacted areas, and how much ground you are trying to break.
For a typical backyard garden, the two are much closer in capability than the RPM numbers might suggest.
Working width
This is one of the biggest reasons to consider Earthwise.
The TC70016 can work at 11 or 16 inches, according to the manufacturer’s specifications.
The Sun Joe TJ604E has a 16-inch maximum tilling width.
A 16-inch path is useful when you are preparing a larger open garden bed because you can cover more soil with each pass.
But a narrower setting can be more useful when you are working between rows or in smaller planting areas.
Tilling depth
Both machines have an 8-inch maximum working depth.
That makes the comparison simple.
Neither has an advantage on the published maximum depth specification.
However, maximum depth does not mean you should force either tiller to dig 8 inches into hard, untouched ground on every pass. Soil condition matters. Breaking difficult soil gradually is generally easier on the machine and produces a more controlled result.
Earthwise TC70016: Where It Has the Edge
The biggest advantage of the Earthwise TC70016 is its adjustable tilling width.
Being able to switch between 11 and 16 inches gives you more control over the job. The manufacturer specifically describes the machine as suitable for garden and flower-bed preparation, soil loosening, and end-of-season bed cleanup.
That flexibility matters more than it might appear on a specification sheet.
Imagine you have a vegetable garden with relatively wide open space in one area but narrow rows in another. A fixed 16-inch tilling path can be awkward when you need to stay close to established plants.
With the Earthwise, you have the option of narrowing the working width.
Adjustable tines are useful for different jobs
The TC70016 uses six adjustable tines, and its manual provides instructions for changing between four- and six-tine configurations.
That gives the Earthwise another layer of flexibility.
For gardeners who regularly switch between different beds, row spacing, and cultivation tasks, this is a meaningful advantage.
Earthwise is also easier to choose for narrow beds
If your main concern is working around existing garden rows, the TC70016 makes more sense.
The 11-inch setting can help you keep the tilling path narrower instead of repeatedly working more soil than necessary.
That does not make it automatically more powerful than the Sun Joe. It simply makes it more adaptable.
Sun Joe TJ604E: Where It Has the Edge
The Sun Joe TJ604E has a simpler approach.
It gives you a 16-inch working width, six steel tines, an 8-inch maximum depth, and a foldable handle. Home Depot also lists a cord lock and replaceable cutting blade among its features.
If your garden mostly consists of open beds where you want to prepare soil quickly, that straightforward setup can be appealing.
The foldable handle helps with storage
Storage is an easy thing to overlook when buying a garden power tool.
The TJ604E has a foldable handle, which can make the machine easier to store when gardening season is over.
For someone with a small garage, shed, or crowded storage area, that feature can matter more than a small difference in tine speed.
Slightly higher listed tine speed
The TJ604E is listed at 370 RPM, compared with 360 RPM for the Earthwise.
That is a modest difference, not a reason by itself to expect dramatically better performance.
In real garden work, soil condition and technique will usually matter much more than a 10-RPM difference.
Which One Is Better for Different Garden Situations?
| Your situation | Better choice | Why |
|---|---|---|
| Open vegetable garden | Sun Joe TJ604E | Full 16-inch working width |
| Narrow garden rows | Earthwise TC70016 | Adjustable 11–16-inch width |
| Mixed-size garden beds | Earthwise TC70016 | More width flexibility |
| Small storage area | Sun Joe TJ604E | Foldable handle |
| General soil preparation | Either | Very similar power and depth |
| Cultivating between established rows | Earthwise TC70016 | Narrower working option |
| You want a straightforward setup | Sun Joe TJ604E | Fixed 16-inch configuration |
| You want more adjustment options | Earthwise TC70016 | Adjustable tines and width |
What About Hard or Compacted Soil?
This is where you should keep expectations realistic.
Neither of these machines should be treated like a heavy-duty gas rear-tine tiller for large areas of extremely hard, untouched ground.
A 13.5-amp corded electric tiller can be useful for many residential garden tasks, but extremely compacted soil, heavy clay, large roots, and buried rocks can make tilling much harder.
A better approach is to prepare difficult ground gradually rather than expecting one pass to turn hard soil into a finished planting bed.
Also remember that both machines require an outdoor electrical connection and cord management. The Sun Joe manual specifically warns against using the tiller in wet conditions and calls for proper attention to extension-cord safety and maintenance.
Which Is Better for a Vegetable Garden?
For a new or open vegetable garden, I would lean toward the Sun Joe TJ604E if you mainly want to cover the full 16-inch path with each pass.
For a vegetable garden with closely spaced rows or several different bed sizes, I would choose the Earthwise TC70016 because its adjustable 11- to 16-inch width gives you more control.
That distinction is more useful than simply asking which motor is stronger.
A practical example
Suppose you have a 20-by-20-foot open garden that needs seasonal soil preparation. The Sun Joe’s fixed 16-inch path may work well because you have plenty of room to make consistent passes.
Now imagine a smaller vegetable garden with narrow planting rows. The Earthwise’s narrower setting can be more convenient because you have greater control over where the tines work.
In both cases, the right choice depends more on the garden layout than on the small difference in motor speed.
Maintenance and Replacement Parts Matter
A tiller is not a tool you should judge only by its motor and tilling width.
Before buying, consider whether replacement parts and support are available.
American Lawn Mower currently lists TC70016 replacement parts, including tine sets, a wheel frame, handle hardware, and a transmission component.
That is useful information for anyone considering a model that has been on the market for several years.
The Earthwise product page currently identifies the TC70016 as a 13.5-amp, 120V model, but it is also listed as sold out there, so availability may vary by retailer.
If you find one for sale, check that you are getting the exact TC70016 model and that replacement parts are available for the unit you are buying.
Don’t Ignore the Cord
Both machines are corded.
That means you get continuous electrical power without charging batteries, but you also have to manage an extension cord while working.
Keep the cord behind you and away from the rotating tines. Before adjusting, cleaning, or working around the tine assembly, disconnect the power supply and follow the specific owner’s manual instructions. The Earthwise manual also emphasizes disconnecting power before adjusting the tines.
For either model, cord management is part of using the tool safely and effectively.
Which One Should You Buy?
If the two are available at similar prices, my choice would be:
Choose the Earthwise TC70016 if versatility is your priority. Its adjustable 11- to 16-inch working width and adjustable tine configuration make it better suited to gardens with different row widths and bed sizes.
Choose the Sun Joe TJ604E if you prefer a simple 16-inch tiller and easier storage. Its 13.5-amp motor, six steel tines, 8-inch maximum depth, and foldable handle make it a practical option for open garden beds.
There is no huge performance gap between them. The Earthwise wins on flexibility, while the Sun Joe wins on simplicity and storage convenience.
Frequently Asked Questions
Is the Sun Joe TJ604E more powerful than the Earthwise TC70016?
No. Both models use 13.5-amp motors. The Sun Joe has a listed 370-RPM tine speed, while the Earthwise is listed at 360 RPM, but that small difference does not make the Sun Joe dramatically more powerful.
Can the Earthwise TC70016 till narrower than the Sun Joe TJ604E?
Yes. The Earthwise TC70016 can be configured for an 11-inch or 16-inch working width, while the Sun Joe TJ604E is listed with a maximum 16-inch tilling width. This makes the Earthwise more useful when working in narrower garden spaces.
Which is better for a beginner gardener?
Either can work for a beginner who needs a corded electric tiller for residential garden preparation. The Earthwise is the better choice if you want more adjustment options, while the Sun Joe may appeal more if you prefer a straightforward fixed-width design and foldable handle.
Final Verdict
For general garden tilling, the Earthwise TC70016 gets the overall edge because its adjustable 11- to 16-inch width makes it more versatile. That is especially helpful for vegetable gardens, flower beds, and areas where you need to work around existing plants.
The Sun Joe TJ604E remains a strong alternative if you mainly till open beds and value its foldable handle and simple 16-inch configuration.
Expert tip: Before choosing either one, measure the narrowest space you need to till. If 16 inches is too wide for some of your beds, the Earthwise’s adjustable width is the feature most likely to make a real difference.
