Non-Abrasive Review: Hilti Nuron Metal Cutting Circular Saw

Hilti Cordless Metal Cutting Circular Saw Delivers Impressive Performance and Ergonomic Upgrades

A few years back, Hilti launched its Nuron battery platform and a range of innovative tools for the professional market. Among them, we’re also seeing some of the tried-and-true favorites from the previous 22V lineup making the leap with a fresh technology update. I got my hands on the Hilti SC 6ML-22 Cordless Metal Cutting Circular Saw, and I’ll walk you through what I’ve learned and explain how Nuron technology comes into play.

Pros

Fast cutting through 1/4-inch mild steel
Lightweight, portable design
Guide rail-compatible
Spark catcher/collector is easy to empty
Excellent cut-line visibility

Cons

Limited cut depth

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Hilti Cordless Metal Cutting Circular Saw Performance

The Hilti SC 6ML-22 is a cold-cut metal saw that cuts nearly spark-free. As a cold-cut saw, the 6 1/2-inch blade’s 4000 RPM top speed is slower than abrasive options like grinders and chop saws. As the description indicates, it leaves a cut that’s cool to the touch.

As you cut, the integrated spark catcher on the rear of the blade guard collects chips and slag, helping reduce the mess. Personally, I prefer the SC 6ML-22’s collector design because it’s more efficient and much easier to empty when the job is done.

You’ll notice Hilti’s blade brake when you take your finger off the trigger. It stops the blade in just seconds, adding an extra layer of safety alongside the blade guard.

This metal-cutting saw is well-suited for making straight cuts on mild steel and stainless steel sheet goods, as well as pipe and conduit. Hilti includes an adjustable fence that fits directly into the steel shoe, helping you make more accurate, consistent cuts. It’s also compatible with an optional guide rail and pipe adapter if you like.

Recommended Applications

Cutting channels, pipes, conduits, and profiles
Cutting openings in sheet metal for HVAC applications
Cutting sandwich panels, mesh, and corrugated sheet metal
Corrective cutting and trimming of sheet metal

Hilti doesn’t specify a specific material thickness limit, but the maximum cutting depth is 2 3/8 inches. A quick look at the rated applications above tells me that the saw does its best work on sheet goods, but there are relevant pipe/round stock applications as well that electricians, plumbers, and HVAC techs should consider.

The biggest surprise, however, was seeing how much faster this saw cuts compared to its predecessor. The SC 6ML-22 was able to quickly glide through a sheet of 1/4-inch mild steel as though it were standard plywood. Just for kicks, I tried cutting some thicker materials and successfully cut 3/8-inch angle iron. You have to cut a little slower, but the cold cut speed left a nice, clean finish.

Hilti Cordless Metal Cutting Circular Saw Design Notes

Ergonomics

The Hilti SC 6ML-22 tips the scales at 5.9 pounds as a bare tool and 7.5 pounds with the recommended 4.0Ah battery (B 22-85). That’s just shy of 1.5 pounds lighter than the previous model. It measures 11.6 inches from tip to tail and stands just 10 inches tall.

In terms of comfort, this saw checks off some important boxes for us. The main handle is a bit on the thicker side, and the rubber overmold is smoother and more refined. Hilti also made a slight change to the grip angle, making it more parallel to the cutting surface.

The grip and pommel spacing is a little tighter than before, too. Regardless, I didn’t have any trouble finding a comfortable working position during our testing. Compared to some of the compact models I’ve tested, Hilti’s spacing doesn’t feel as cramped at all.

Cutline Visibility

Maintaining a clear line of sight while cutting is a top priority. Between the onboard LED light and the internal dust blower, this saw does a great job of maintaining cut-line visibility, but Hilti took things even further.

The clear plastic shield is larger and wraps completely around the leading edge of the blade guard. This design benefits left- and right-handed users tremendously, providing a clear line of sight and helping to block stray metal shavings and slag. Moreover, the alignment guides on the shoe are now larger and more pronounced, improving overall accuracy.

Cutting Depth Adjustments

Adjusting the cut depth is pretty standard; just flip the lever at the back and set your desired depth. One major improvement over the previous model is the addition of cut-depth markings. The scale is located on the inside of the blade guard and features both metric and SAE markings.

Additional Features

Integrated dust blower: Keep your cutline free of dust and debris
On-board tool storage: Save time and frustration when swapping blades
Folding rafter hook: Quickly stow your saw on a 2x stud or sawhorse between cuts

Hilti Metal Cutting Saw Quick Comparison

	Hilti SC 5ML-22	Hilti SC 6ML-22
No-Load Speed	3,500 RPM	4,000 RPM
Cut Capacity	2-1/4 in.	2-3/8 in.
Bare Weight	7.31 lbs.	5.9 lbs.

The Benefits of Nuron Technology

While we’re happy with the performance and design of the SC 6ML-22, what exactly does Nuron technology add to the mix?

For starters, there’s a tangible benefit to Nuron batteries. Their combination of cell selection, electrical resistance reduction, and cooling enables it to work harder without affecting the pack’s lifespan.

Then there’s the smart side. These batteries can automatically store and transmit data about the tool and battery, giving crib managers a leg up on tool management. Even if you’re using multiple tools with a single battery, the pack stores data for all of them and can transmit it via the charger.

Click here to take a deeper dive into the Nuron technology story.

Hilti Cordless Metal Cutting Circular Saw Price

You can get the Hilti SC 6ML-22 from Hilti for $436.00 as a bare tool. We really love that Hilti gives you the ability to customize your kit’s configuration by letting you choose the number of batteries and charger that best suit your needs. For instance, this saw, along with a pair of Nuron B 22-85 batteries and a C 4-22 charger, will run you $625.75.

For the tool crib managers out there, Hilti offers Fleet pricing, which includes no-cost tool maintenance, fixed monthly pricing, and loaner tools to keep you up and running. This saw is about $14.25 per month on the fleet pricing program.

Hilti backs this circular saw with a 20-year warranty, 2 years of wear and tear coverage, and a 1-day in-and-out repair center guarantee.

Battery Recommendations

While the SC 6ML-22 is compatible with Hilti’s entire Nuron battery lineup, they do make recommendations based on ergonomics and performance. Here’s what they have to say.

Nuron B 22-55: Not recommended due to lower runtime and performance
Nuron B 22-85: Best combination of balance, size, weight, and performance
B 22-170: Not recommended due to size and weight, but will provide additional runtime
B22-255: Not recommended due to excessive size and weight

Should You Buy It?

Overall, the Hilti Cordless Metal Cutting Circular Saw is an excellent tool, especially considering its compact size. It has plenty of power for cutting metal sheet goods, pipe, and even the occasional venture into heavy-duty angle iron and I-beams.

For professional fabricators, commercial construction crews, and trades that do a lot of sheet metal or smaller round stock cutting, this saw should quickly pay for itself in time saved on your next project.

With that said, the price tag may be a little bit much if your metal-cutting needs are few and far between. In that case, I’d suggest sticking with your trusty angle grinder and a cutting disc instead.