Kuvings REVO830 vs Nama J2

Buy the Kuvings REVO830 if you want to stop chopping. Buy the Nama J2 if you want to stop standing at the machine. Both are premium verticals, both run at 50 RPM, and both are attacking prep time -- from opposite ends.

The REVO830's two chutes

This is the feature that makes the machine. Kuvings states a 3.5 in wide chute for whole fruit -- the widest cold press chute in our registry -- plus a 1.75 in auto-cut chute specified for celery and carrots.

That combination is unusual and genuinely useful: whole apples go in the wide one with no board and no knife, and stringy produce goes in the narrow one where a controlled feed stops it bridging and wrapping the auger. Kuvings states 50 RPM, 240 W, and a 15-year limited warranty on its US listing -- though regional sellers list shorter terms, so read the one you buy from.

The J2's hopper

Nama's answer is to remove you from the process. Load the hopper, press go, walk away. Nama states 50 RPM from a single-phase induction motor at 200 W, 12.1 lb, and 20-30 oz of juice per batch depending on ingredients -- one of very few volume figures published in this category.

The warranty is split: 15 years on the motor, 2 years on parts. Kuvings' 15-year figure is quoted as a limited warranty without that split on the page we checked, which is a point in its favor but worth confirming with your seller.

Side by side

Choose the REVO830 if

• Celery is a main ingredient. The 1.75 in auto-cut chute is the only feature in this whole category engineered specifically for it.
• You juice apples or other round hard fruit. A 3.5 in chute removes the chopping entirely.
• You want flexibility rather than automation. Two chutes means two ways to feed, which covers more produce shapes.
• Warranty matters and you buy from a US seller stating the 15-year limited term.

Choose the Nama J2 if

• Standing at the machine is the part you resent. The hopper is the only real answer to that.
• You batch regularly. Load once, do something else.
• You want a published batch volume rather than no figure at all.
• Lighter is better. 12.1 lb is among the lightest premium verticals.

Our verdict

The REVO830, for most buyers. The dual-chute design addresses prep -- which is where most of a slow juicer's time actually goes -- and the narrow auto-cut chute is a real engineering answer to the celery problem rather than a convenience feature. The Nama wins if your specific complaint is the feeding rather than the chopping, and for a daily batch juicer that is a legitimate reason to prefer it.

If cleanup is the deciding factor rather than prep, neither of these is the answer -- see Nama J2 vs Hurom H400, because Hurom's strainer-free design beats both on that criterion.

Our pick, with a buy link

1. Our verdict: the Kuvings REVO830

Kuvings REVO830

Kuvings REVO830 · $400+ · Our score 7.7/10

The dual-chute design attacks prep, which is where most of a slow juicer's time actually goes, and the 1.75 in auto-cut chute is a genuine engineering answer to the celery problem rather than a convenience feature. Kuvings states 50 RPM, 240 W and a 15-year limited warranty on the US listing. The Nama wins if standing at the machine is your objection rather than chopping.

Yield

Not availableNot sourced

Pulp

Not availableNot sourced

Cleanup time

Not available - no published cleanup time in minutesNot sourced

Speed

Kuvings states 50 RPM, 240 WManufacturer claim: Kuvings USA · checked 2026-10-02

What works

• Two chutes: whole fruit in the wide one, stringy produce in the narrow auto-cut one
• The narrow chute is the one feature aimed squarely at celery clogging
• 15-year warranty on the US listing

What does not

• Warranty length differs by region - check the seller's terms, not the brand page
• No published yield or cleanup-time figure to compare against rivals
• Top of the price range

Skip this if: Counter height is tight - this is a tall vertical machine and it needs clearance above the chute to load whole fruit.

Representative photo. We have no manufacturer image library, so this is a licensed stock photo of the category, not a photo of this unit.

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• Yield9/10
• Pulp8/10
• Cleanup7/10
• Value6/10
• Quiet8/10

Read the full Kuvings REVO830 review