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Table of contents
Table of contents

Dremel US40-04 vs. Rockwell RK3440K

Thinking about a new circular saw? Compare the features of the Dremel US40-04 and Rockwell RK3440K and make an informed purchase!

Lets take a look at these two circular saws: the Dremel US40-04 and the Rockwell RK3440K.

Dremel US40-04
Rockwell RK3440K

Features & Benefits

You can read more in our roundup of the best compact circular saws.

Power & Motor

Both products are corded and run on 120 V. The US40-04 draws 7.5 amps. The RK3440K draws 4 amps. Standard U.S. residential circuits are 120 V, 15 A, which will support either of the saws.

The US40-04 motor spins at 13000 rpm and the RK3440K motor spins at 3500 rpm. But dont get too caught up in these numbers, since the manufacturers measure them under ideal conditions, and they dont have a direct impact on the saws real-world ability to handle different material.

The US40-04 has a direct-drive motor. The RK3440K has a direct motor. Direct-drive motors are usually lighter than other styles, but their side mounting makes the saw a little harder to control.

Blades & Capacity

The US40-04 accepts 4 diameter blades. The RK3440K takes 3 3/8 diameter blades and has a 19/32 arbor.

Both circular saws can bevel the blade up to 0°. The US40-04 can cut up to 3/4 at a 90° angle. The RK3440K can cut up to 1 1/16 deep at a 90° angle.

When beveling the saw, most circular saws will have positive stops at common angles such as 45° and 90°. This ensures you are making precise cuts. Some saws have additional stops at other angles.

Both products have the blade on the left side of the unit. Right-handers sometimes find it easier to see and control blades mounted to the left, while left-handers might find the same true for right-mounted blades.

Pros & Cons

Lets take a look at some of the pluses and minuses of these products.

For the Dremel:

Pros

  • Optional auxiliary handle for extra control
  • Includes multiple blades for wood, metal, PVC, etc.
  • Can make flush cuts with appropriate blade

Cons

  • Can overheat when cutting thick material

For the Rockwell:

Pros

  • Very lightweight
  • Laser guide for accurately following cut lines

Cons

  • Safety mechanism can be confusing, requires pushing plate down onto work surface

Comparison Chart

Below is a full side-by-side comparison of these productsspecs. You can view comparisons of the Dremel US40-04 with other products

and comparisons of the Rockwell RK3440K with other products.

Dremel US40-04Rockwell RK3440K
Dremel US40-04
Rockwell RK3440K
BrandDremelRockwell
Power Typecordedcorded
Power - Voltage120 V120 V
Power - Amps7.5 A4 A
No-load RPM13000 rpm3500 rpm
Blade Diameter4”3 3/8”
Maximum Bevel
Depth of Cut (at 90°)3/4”1 1/16”
Arbor Sizen/a19/32”
Dimensions13” L × 5” H
Weight4.6 lbs4 lbs
Blade - Sideleftleft
Drive Mechanismdirect-drivedirect
Warranty2 years
Pros
  • Optional auxiliary handle for extra control
  • Includes multiple blades for wood, metal, PVC, etc.
  • Can make flush cuts with appropriate blade
  • Very lightweight
  • Laser guide for accurately following cut lines
Cons
  • Can overheat when cutting thick material
  • Safety mechanism can be confusing, requires pushing plate down onto work surface
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