DeWalt DCS571B vs. Rockwell RK3440K

Let’s take a look at these two circular saws: the DeWalt DCS571B and the Rockwell RK3440K.

Features & Benefits

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

Power & Motor

The RK3440K is corded, runs on 120 V, and draws 4 amps. Standard U.S. residential circuits are 120 V, 15 A, which will support the.

The DCS571B is cordless and runs on 20 V batteries.

The DCS571B motor spins at 4500 rpm and the RK3440K motor spins at 3500 rpm. Don’t get too caught up in these numbers, since the manufacturers measure them under ideal conditions, and they don’t have a meaningful impact on the saw’s real-world ability to handle different material.

The RK3440K has a direct motor.

Blades & Capacity

The DCS571B accepts 4 1/2” diameter blades and has a 3/8” arbor. The RK3440K takes 3 3/8” diameter blades and has a 19/32” arbor.

The DCS571B can bevel the blade up to 45° and can cut up to 1 9/16” deep at a 90° angle. The RK3440K can bevel up to 0° and can cut up to 1 1/16” 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.

The DeWalt has stops at 90 Degrees.

Both circular saws 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

Let’s take a look at some of the pluses and minuses of these products.

For the DeWalt:

For the Rockwell:

Comparison Chart

Below is a full side-by-side comparison of these products’ specs. You can view comparisons of the DeWalt DCS571B with other products

	DeWalt DCS571B	Rockwell RK3440K
Brand	DeWalt	Rockwell
Power Type	cordless	corded
Power - Voltage	20 V	120 V
Power - Amps		4 A
No-load RPM	4500 rpm	3500 rpm
Blade Diameter	4 1/2”	3 3/8”
Maximum Bevel	45°	0°
Depth of Cut (at 90°)	1 9/16”	1 1/16”
Depth of Cut (at 45°)		n/a
Arbor Size	3/8”	19/32”
Dimensions	5 1/8” W × 17.6” L × 6.687” H
Weight	6.6 lbs	4 lbs
Blade - Side	left	left
Drive Mechanism		direct
Stops	90 Degrees	n/a
Warranty	3 Year Limited Warranty
Pros	As powerful as corded circular saws Easy to hold and maneuver one-handed	Very lightweight Laser guide for accurately following cut lines
Cons	Dust port adapter tends to fall off during use	Safety mechanism can be confusing, requires pushing plate down onto work surface
	Check Price	Check Price