DEWALT DCS577N
54v Circular saw - 190mm blade
- Body only - No battery, charger or case
- No load speed: 5800rpm
- Depth of cut: 65mm
- Brushless motor
- Cardboard box
Was £338
- Body only - No battery, charger or case
- No load speed: 5800rpm
- Depth of cut: 65mm
- Brushless motor
- Cardboard box
- Body only - No battery, charger or case
- No load speed: 5800rpm
- Depth of cut: 65mm
- Brushless motor
- Cardboard box
The DeWalt DCS577N is a 54V cordless circular saw designed for heavy-duty cutting tasks in wood and other construction materials.
Key Features:
• Cordless: Powered by a 54V XR FLEXVOLT lithium-ion battery.
• Brushless Motor: Delivers high torque and extended runtime.
• Worm Drive Style: Provides increased power and torque for demanding cuts.
• Bevel Capacity: Adjustable up to 53 degrees for angled cuts.
• Depth Adjustment: Tool-free setting with a maximum cutting depth of 65 mm.
• Dust Management: Integrated blower and AirLock-compatible extraction port.
• Rafter Hook: Allows convenient on-site storage.
• Durable Construction: Aluminium gearbox and blade guard for jobsite resilience.
Technical Specifications:
• Voltage: 54V
• No-Load Speed: 5,800 rpm
• Blade Diameter: 190 mm
• Blade Bore: 30 mm
• Cutting Depth at 90°: 65 mm
• Cutting Depth at 45°: 50 mm
• Weight: 4.7 kg
• Dimensions (L x H): 400 x 250 mm
Alternative: DeWalt DCS578N
The DCS578N is a similar 54V cordless circular saw offering comparable cutting capacity with a different design and ergonomics
What is a 'Worm Drive'?
A worm drive refers to a specific type of gear mechanism used in some circular saws and other machinery. In a worm drive setup, a worm (which resembles a screw) meshes with a worm gear (which looks similar to a gear or cog). This configuration has several key characteristics:
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Increased Torque: Worm drives are known for their ability to provide high torque output. This is due to the gear ratio inherent in the design, which allows the saw to deliver more power to the blade, making it easier to cut through tough materials.
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Compact Design: The perpendicular arrangement of the motor and blade in a worm drive saw allows for a more compact design, often resulting in a longer, narrower saw body.
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Durability and Longevity: Worm drives are generally very durable, as the design allows for better handling of high-load conditions, reducing wear and tear.
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Power Transfer: The design of worm drive saws tends to provide a smoother power transfer to the blade, which can result in cleaner, more accurate cuts.
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Weight and Balance: Worm drive saws are often heavier than direct drive saws, which can aid in stability and control during cutting, although it may also lead to user fatigue over extended periods.
These characteristics make worm drive saws particularly popular for heavy-duty applications, such as framing and long rip cuts, where extra power and durability are advantageous.
An introduction to circular saws: Circular saws, sometimes known as a rip saw or Skil saw, are used for straight, vertical cuts in wood, wood with nails, corrian (worktops), laminates & aluminium depending on the blade selected. Click here to see all our saws
To choose between circular saws: The subsequent criteria needed for choosing a circular saw is the diameter of the blade to determine the depth of cut. The more popular diameters tend to be 190mm & 235mm. This 190mm diameter blade is a particularly populare blade size for circular saws. Click here to see all our circular saws
To make sure you've got the right circular saw - 190mm blade: Choosing the right battery: Cordless (or battery powered) tools have various chemical battery types; Li-ion is the latest technology, prior to that it was Ni-MH and Ni-Cad was the original. The higher the Ah (Ampere hours) the longer the interval between charges; the fewer times you recharge a battery the longer it will last. Some cordless tools can also come without batteries - also referred to as naked, bare units or body only. These tools are supplied without a battery or charger and more often than not without any accessoires. As a result they are significantly cheaper in price.
Click here to see all our circular saw - 190mm blade

The DCS577 is the cordless benchmark for high performance circular saws. Perfect for first fix applications the DCS577 offers corded performance with all the benefits of the XR FLEXVOLT cordless platform. The unique diamond shaped blade bore allows more of the power to be transferred into the work piece and tool free adjustments make setting the depth and bevel hassle free.
- 54V Brushless Motor for increased power and runtime
- Motor sem escovas oferece maior autonomia e durabilidade
- General purpose ripping, crosscutting and bevelling circular saw for wood and other construction materials
- Quick variable adjustment of bevel angle to 53 degrees
- Max Cutting Depth of 65mm at 90 degrees
- Max Cutting Depth of 50mm at 45 degrees
- Optimum balance for safe, fatigue-free operation
- Stable block construction for low vibration running and long service life
- Direct compatability with DEWALT AirLock system for easy, secure connection to extraction hose
- Dust blower keeps cut line clear of dust and debris
- No Load Speed: 5800rpm
- Blade Diameter: 190mm
- Bevel Capacity: 53º
- Max. Depth of Cut at 90º: 65mm
- Weight: 5kg
- Hand/Arm Vibration: 2.5m/s²
- Uncertainty K 1 (Vibration): 1.5m/s²
- Sound Pressure: 84dB(A)
- Sound Pressure Uncertainty: 3dB(A)
- Sound Power: 95dB(A)
- Sound Power Uncertainty: 3dB(A)
Includes:
- Blade wrench
- Dust Extraction Spout
- 24 tooth TCT saw blade

- 1 year warranty - for full information click here
- 1 year warranty can be extended to 3 years (on qualifying products) by registering tool online within 30 days of purchase. For full information and to register your tool click here
- Warranty claims all tools except lasers: Please contact Dewalt directly on 03308080719. Dewalt tools under warranty are eligible for free nationwide collection and return
- Warranty claims on Lasers: Please contact the national Dewalt warranty agent, Global Surveyors Group, directly on 01942 896244. Dewalt tools under warranty are eligible for free nationwide collection and return
- Find your nearest service agent - click here
- You can order until 8pm for free next working day delivery to nearly all of England and Wales. For locations further from our hub, our cut off is 5pm. Some harder-to-reach locations may take an extra day. More info »
- For most orders we use a premium carrier that notifies you of a one hour timed delivery slot and sends text updates.
- If you change your mind within 30 days of buying a tool, not a problem (assuming the tool has not been used and is in its original packaging) - call us on 0333 004 3000 or email us at [email protected] and we’ll contact you to arrange collection. Once the tool is received back, we will refund the cost of the tool less a £6 collection charge.
- If the tool is faulty within 30 days of buying it, we will arrange for its collection at no cost to you and supply a replacement.
- If the tool is faulty after 30 days of buying it, and before the expiry of the manufacturer’s warranty, we will guide you through the manufacturer’s warranty process.