Introducing the First Cordless Worm Drive Circular Saw in the Market
The Skilsaw Cordless Worm Drive Circular Saw is breaking new ground as the first cordless saw to utilize a worm drive mechanism. This is a significant milestone for Skilsaw, especially since their Pro brand differs greatly from Skil in terms of DIY products.
Pros: Advantages of the Skilsaw Cordless Worm Drive
- Unmatched cutting power and performance
- Exceptional tracking ability
- Perfect accuracy at 45º and 90º angles
- Impeccable guard action
- Minimal shoe friction
- Efficient dust and swarf removal (no vacuum required)
- Includes a vacuum adapter for enhanced cleanliness
Cons: Limitations to Consider
- Heavier rear handle setup
- Limited compatibility with other tools
Skilsaw Cordless Worm Drive 48V TrueHVL Power Supply
Let’s start with the power supply. The Skilsaw features a 48V battery and comes with a 5.0Ah battery pack, providing a total of 240 watt hours. Skilsaw refers to this battery system as “TrueHVL,” signifying true high-voltage lithium batteries.
Undoubtedly, the battery is substantial. It requires a 12-cell system with 24 cells in the pack, weighing 4.25 lbs on its own.
However, this is not a significant concern. Skilsaw is known for their saws, and the size of the battery becomes less important when considering the cutting power required for their lineup. In future iterations, we hope to see cordless versions of their entire range of tools. In these categories, strength is paramount, and a larger battery can be accommodated as long as the Skilsaw Cordless Worm Drive cuts through materials with efficiency.
The Skilsaw’s brushless motor spins its 7-1/4″ blade at an impressive 5800 RPM. This high-speed rotation ensures the 48V motor can handle any task a wired worm drive would encounter with confidence.
At a 90º angle, the cut depth reaches 2-3/8″, decreasing to 1-15/16″ at 45º, and finally 1-11/16″ at the maximum 53º bevel.
As a bare tool, it weighs a manageable 11.09 lbs. With the batteries added, its weight reaches 15.34 lbs. Comparatively, Skilsaw’s current corded 7-1/4″ worm drive weighs between 11.5 and 14.2 lbs. While the weight does increase slightly, it remains reasonable. To reduce weight, the design team utilized magnesium for the guards, chassis, and shell.
Note: The 16-5/16″ Super Sawsquatch by Skilsaw weighs 27.3 lbs.
Currently, there is no option to purchase the Skilsaw cordless worm drive as a bare tool. The complete kit, including the saw, battery, and charger, is priced at $399. For those seeking extended battery life, a dual-battery kit is available for $599.
This places the Skilsaw cordless worm drive at the higher end of the market. However, considering the company’s reputation for producing top-tier cordless circular saws, this price point should come as no surprise.
The Results Are In!
We have extensively tested the Skilsaw cordless worm drive in our evaluation of the best cordless rear handle circular saws. It competes head-to-head with other rear handle and sidewinder styles, belonging to an elite group of cordless tools.
It effortlessly cuts through two layers of 3/4-inch subfloor and boasts the highest cutting power among the cordless circular saws we tested. Additionally, its dust and debris removal capabilities are exceptional, especially when connected to a vacuum. Even when not in use, it outperforms other rear handle saws in terms of debris removal, effectively keeping the cutting line clean by allowing debris to pass through the handle.
The Skilsaw provides a clear line of sight to the blade during cutting. While it may not offer the same wide open view as Milwaukee’s M18 Fuel rear grip, it excels at focusing on shoe notches. With Spyder frame blades installed, the alignment at 0º and 45º angles is precise.
The tracking of the Skilsaw is also highly accurate. While some tested saws exhibited slight side-to-side movement, the TrueHVL worm drive remained steady during manual cuts.
Ease of Movement
We tested various crosscuts in 3/4″ and 2x material, as well as miter, compound, and miter cuts. Some saws struggled with certain cuts, but the Skilsaw cordless worm drive glided smoothly over the material. Its guard action is excellent, allowing for effortless movement. The shoe demonstrates minimal friction, allowing it to effortlessly glide over wood surfaces, facilitating uninterrupted progress.
Due to its metal construction and the inclusion of a 5.0Ah battery, the Skilsaw worm drive is heavier when compared to similar products. While this may be noticeable when carrying the saw around a job site or making vertical and overhead cuts in installed material, the handle’s ergonomic design compensates for the additional weight. The angles are precisely calibrated, and the side grip boasts a pleasing thickness, ideal for those with larger hands.
The Bottom Line
Undoubtedly, if you are in search of a high-performance cordless circular saw, the Skilsaw cordless worm drive deserves serious consideration. It embodies the key attributes we prioritize in terms of performance, accuracy, and ease of movement. As long as you don’t mind a slightly heavier tool, the SPTH77M offers everything you need to confidently replace your corded worm drive saw.
Skilsaw Cordless Worm Drive Circular Saw Specifications
- Model: Hacksaw SPTH 77 M-22
- Power: Skilsaw TrueHVT 48V battery
- Blade: 7-1/4″ (24T Diablo blade included)
- No-load speed: 5800 RPM
- Maximum cutting depth: 2-3/8″
- Weight: 11.09 lbs (bare), 15.34 lbs (with battery)
- Warranty: 1 year
- Price: $399 (single battery kit), $599 (dual battery kit)