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MOW & MEADOW

Yard Tools

Best electric wood chipper

Same brand, same price bracket, 68 times the blade speed. These are two different machines wearing one name.

By Sawyer V.Published Last updated

Affiliate disclosure: we earn a commission if you buy through our links, at no extra cost to you. It never changes which product we rank first — here is how we're funded.

Cordless chainsaw cutting a branch

We have not tested these units. Every spec on this page comes from the manufacturer's own documentation and is linked to it. Every computed figure is arithmetic you can redo. Prices are checked daily — last verified January 1, 1970. Here is exactly how we pick.

Quick picks

Ranked on the published specs and the arithmetic below. Tap any row to jump to the full write-up. We have not tested these units -- here is exactly how we pick.

#ProductBest forScorePrice
1
No photo
Sun Joe CJ603E 15-Amp Electric Wood Chipper / Shredder
21:1 reduction on branches up to 1.73 in, and 14 decibels quieter than the smaller machine on Sun Joe's own published figures.
Best reduction ratio
8.6
2
No photo
Sun Joe CJ601E 14-Amp Electric Wood Chipper / Shredder
Half the weight of the bigger machine and 68 times its blade speed, which is the trade: fast feeding, loud, and no bag at all.
Lightest to move
7.9

#ad Buy links are affiliate links. Prices come from a live daily check; where we have no verified price we say "check price" rather than print a stale one.

These two chippers carry the same brand, sit one amp apart on the nameplate and are engineered on opposite principles. One turns a cutter at 60 RPM and crushes; the other spins a blade at 4,100 and slices. The published specifications make that clear, and almost nothing else about the packaging does.

The short answer

The Sun Joe CJ603E: 15 amps, a 21:1 reduction ratio, branches to 1.73 in, 60 RPM no-load and 94 dB, at 39 lb. The CJ601E is 14 amps, 16:1, 1.5 in, 4,100 RPM and 108 dB at 25.36 lb with no collection bag supplied. Buy the 603E unless portability outweighs everything.

Sixty RPM against four thousand one hundred

This is the figure that explains every other difference between the two machines.

The arithmetic — Blade speed, noise and what each design is for
CJ603E no-load speed: 60 RPM
CJ601E speed: 4,100 RPM
4,100 / 60 = 68x
Published sound: 94 dB vs 108 dB
Decibels are logarithmic: 108 - 94 = 14 dB,
which is roughly 25x the sound intensity
(10^(14/10) = 25.1).
Slow crusher: quiet, higher reduction, slow feed.
Fast blade: loud, lower reduction, fast feed.
Both of these need hearing protection. Ninety-four decibels is above the level at which sustained exposure is a problem, and 108 dB is well above it. Neither Sun Joe page publishes a safe exposure time, and we will not invent one — wear muffs for either machine.

The two, side by side

SpecSun Joe CJ603ESun Joe CJ601E
Motor15 A, 120V~60Hz14 A
Max branch diameter1.73 in1.5 in
Reduction ratio21:116:1
Speed60 RPM no-load4,100 RPM (4,300 no-load listed)
Sound rating94 dB108 dB
Weight39 lb net / 40.6 lb gross25.36 lb gross
Dimensions16.5 H x 23.5 L x 12.5 W in17 W x 19 H x 37.5 D in assembled
Wheels6 in6 in
SafetySafety hopper with locking knobCSA / ETL certified
Collection bagNot publishedNone supplied
Warranty2 years2 years

Transcribed from the CJ603E and CJ601E product pages. The speed and sound-intensity comparisons are our arithmetic.

1. Sun Joe CJ603E — more reduction, thicker branches, quieter

Twenty-one to one is the highest published reduction ratio in our registry, and against the 601E's 16:1 it is a 31% improvement — 21 divided by 16. On a day of storm cleanup that is several fewer trips to the curb for the same pile of brush.

The 1.73 in branch capacity is 0.23 in more than the smaller machine, which sounds trivial and is not: a great deal of hedge and storm debris sits right around an inch and a half.

The safety hopper with a locking knob is worth naming. A chipper that cannot be run with the hopper open is a chipper that cannot throw material back at you.

Against it: 60 RPM is deliberate, slow feeding. This is a machine you work with, not one you feed as fast as you can pick up branches. And Sun Joe publishes no bag capacity and does not describe the cutting mechanism at all.

#ad Check the Sun Joe CJ603E 15-Amp Electric Wood Chipper / Shredder price on Amazonhow we're funded.

2. Sun Joe CJ601E — light, fast, loud, and no bag

At 25.36 lb gross this one can be carried to the brush pile instead of the brush pile being carried to it, and a 4,100 RPM steel blade feeds far faster than a slow-turning crusher.

Two things sit against it hard. The published 108 dB is 14 decibels above the 603E — about twenty-five times the sound intensity. And Sun Joe states no collection bag is supplied, so the chip goes on the ground and you rake it.

It is CSA and ETL certified and carries the same two-year warranty. If portability is the binding constraint — a wooded lot with no outlet near the pile, an extension lead and a wheelbarrow — it earns its place. Otherwise the 603E is the better machine.

#ad Check the Sun Joe CJ601E 14-Amp Electric Wood Chipper / Shredder price on Amazonhow we're funded.

Before the chipper, the saw

Neither of these handles limb wood. Anything over about 1.7 inches is cut down first, which is a job for a cordless chainsaw or, for pruning-scale material, a mini pruning saw. Read the chainsaw safety guide first, and the chip itself has a second life — clippings and composting covers what to do with it.

What we cannot tell you

We have not run either chipper. Sun Joe publishes no bag capacity for the CJ603E, no description of either cutting mechanism, no throughput figure in pounds or cubic feet per hour, and no safe-exposure guidance against the published decibel ratings. The reduction ratios are the makers' own claims and are not measured the same way by anyone else.

The picks in full

Specs are the manufacturer's own and linked to the page they came from. Prices come from a live daily check; where we have no verified price we say so rather than print a stale one.

1. Best reduction ratio

Sun Joe CJ603E 15-Amp Electric Wood Chipper / Shredder

Sun Joe · Corded 120V · Our score 8.6/10

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No photo
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#ad No verified live price right now, so we show none rather than a stale one. How we're funded.

21:1 reduction on branches up to 1.73 in, and 14 decibels quieter than the smaller machine on Sun Joe's own published figures.

Published specs

Motor15 A, 120V~60Hz
Max branch diameter1.73 in
Reduction ratio21:1
No-load speed60 RPM
Sound rating94 dB
Wheels6 in
Weight39 lb net / 40.6 lb gross
Dimensions16.5 in H x 23.5 in L x 12.5 in W
SafetySafety hopper with locking knob
Warranty2 years
Bag capacity / cutting mechanismNot published

Source: Sun Joe CJ603E Electric Silent Wood Chipper/Shredder, shopjoe.com

Our arithmetic — Volume of brush per bag of chip
21 bags in, 1 bag out

A 21:1 reduction ratio means 21 units of loose brush become 1 unit of mulch. Twenty-one contractor bags of hedge prunings and storm twigs reduce to a single bag of chip. Against the CJ601E's published 16:1 that is a 31% improvement (21 / 16 = 1.31), which on a day of storm cleanup is several fewer trips to the curb.

What the numbers favor

  • 21:1 reduction, the higher of the two published ratios here
  • 1.73 in branch capacity, 0.23 in more than the smaller model
  • 94 dB against the CJ601E's 108 dB -- a real difference at the ear
  • Safety hopper with a locking knob, so the cutter will not run open
  • 2-year warranty published

What they don't

  • 60 RPM no-load is slow feeding; this is not a machine to rush
  • Sun Joe publishes no bag capacity and does not describe the cutting mechanism
  • 39 lb on 6 in wheels over rough ground is awkward
  • Corded, so the work happens where the outlet is
Skip this one if

your brush pile has limbs over 1.73 in. Above that diameter this is a saw job first, and a chipper job second.

How it scores

Reduction ratio9.5
Branch capacity8.5
Noise8.0
Safety design9.0
Feed speed6.0

Scores are our editorial weighting of the published specs above, not a test result. They are deliberately kept out of this page's structured data.

2. Lightest to move

Sun Joe CJ601E 14-Amp Electric Wood Chipper / Shredder

Sun Joe · Corded 120V · Our score 7.9/10

#ad Check price on Amazon

No photo
Check price on Amazon

#ad No verified live price right now, so we show none rather than a stale one. How we're funded.

Half the weight of the bigger machine and 68 times its blade speed, which is the trade: fast feeding, loud, and no bag at all.

Published specs

Motor14 A
Speed4,100 RPM (4,300 RPM no-load listed)
Max branch diameter1.5 in
Reduction ratio16:1 (up to 1/16th)
CutterSteel blade
Sound rating108 dB
Wheels6 in
Weight25.36 lb gross
Dimensions17 in W x 19 in H x 37.5 in D assembled
CertificationCSA / ETL
Warranty2 years
Collection bagNone supplied

Source: Sun Joe 14-Amp Electric Wood Chipper/Shredder, shopjoe.com

Our arithmetic — Blade speed against the 15-amp machine
68x

4,100 RPM against the CJ603E's published 60 RPM no-load is 4,100 / 60 = 68 times the speed. These are two different machines wearing the same badge: a high-speed blade chipper and a slow-turning crusher. High speed feeds faster and makes finer chip; it is also why this one is rated at 108 dB against 94 dB.

What the numbers favor

  • 25.36 lb gross -- light enough to carry to the brush pile
  • 4,100 RPM steel blade feeds far faster than a slow crusher
  • CSA / ETL certified
  • 2-year warranty published
  • Shortest hopper-to-outlet path of the two

What they don't

  • 108 dB published; this is hearing-protection equipment, not background noise
  • No collection bag supplied, so the chip goes on the ground
  • 1.5 in branch maximum, the smaller of the two
  • 16:1 reduction, 31% less volume reduction than the 15-amp machine
Skip this one if

you want the chip collected. Sun Joe supplies no bag with this model, and publishes no bag accessory for it.

How it scores

Portability9.5
Feed speed9.0
Reduction ratio7.0
Noise3.5
Collection3.0

Scores are our editorial weighting of the published specs above, not a test result. They are deliberately kept out of this page's structured data.

Where to buy the tools on this page

Every link below is an Amazon affiliate link. We show no price we have not verified today, so where there is no live figure the link says "check price" and takes you to the listing to read it there.

  • Best reduction ratio

    Sun Joe CJ603E 15-Amp Electric Wood Chipper / Shredder

    Sun Joe · Corded 120V

  • Lightest to move

    Sun Joe CJ601E 14-Amp Electric Wood Chipper / Shredder

    Sun Joe · Corded 120V

#ad As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. How we're funded.

Common questions

What is the best electric wood chipper?
The Sun Joe CJ603E. It publishes a 21:1 reduction ratio, a 1.73 in maximum branch diameter and a 94 dB sound rating -- higher reduction, thicker branches and 14 decibels quieter than the 14-amp CJ601E.
What size branches can an electric chipper take?
Sun Joe publishes 1.73 in for the CJ603E and 1.5 in for the CJ601E. Above those diameters it is a chainsaw job first. No consumer electric chipper in our registry handles limb wood.
What does a reduction ratio mean on a chipper?
How much the volume shrinks. A 21:1 ratio means twenty-one bags of loose brush become one bag of chip. The CJ601E publishes 16:1, which is 31% less reduction for the same pile.
Are electric wood chippers loud?
Sun Joe publishes 94 dB for the CJ603E and 108 dB for the CJ601E. Both need hearing protection; the 108 dB machine is in the range where exposure time starts to matter, not just comfort.
Do electric chippers come with a collection bag?
The CJ601E does not -- Sun Joe states no collection bag is supplied. Sun Joe publishes no bag capacity for the CJ603E either, so confirm what is in the box before you buy.

Sources

  1. Sun Joe CJ603E Electric Silent Wood Chipper/Shredder, shopjoe.com
  2. Sun Joe 14-Amp Electric Wood Chipper/Shredder, shopjoe.com