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Description
DEWALT Angle Grinder DCG405B 20V 4.5 Inch Corded Replacement Cordless Skin (9000 RPM Brushless Slide Switch Kickback Brake Power Loss Reset Bare Tool)Halt Wheel Rotation under Two Seconds during Sudden Bind Ups and Prep Structural Weld Lines Safely The DEWALT DCG405B 20V MAX* XR Brushless 4. 5 Inch Angle Grinder is an industrial grade cordless metal fabrication instrument engineered to deliver up to 9,000 RPM of rotational velocity. This heavy duty power tool features an advanced electronic brake that stops wheels in under two seconds and a specialized dynamic kickback sensor to shut down the motor
Halt Wheel Rotation under Two Seconds during Sudden Bind Ups and Prep Structural Weld Lines Safely
The DEWALT DCG405B 20V MAX* XR® Brushless 4.5-Inch Angle Grinder is an industrial-grade cordless metal fabrication instrument engineered to deliver up to 9,000 RPM of rotational velocity. This heavy-duty power tool features an advanced electronic brake that stops wheels in under two seconds and a specialized dynamic kickback sensor to shut down the motor during severe wheel pinches or stalls. Outfitted with a slim ergonomic gear housing, a secure safety slide switch, and a Power Loss Reset® circuit, this compact layout tool optimizes mobile productivity across commercial construction grids. **Battery and charger sold separately.
Best Used For:
- Commercial Rebar Cutting: Slicing rapidly through thick concrete reinforcing iron rods and heavy mesh layouts unassisted on structural project slabs.
- Structural Steel Beveling: Removing mill scale, cleaning slag, and beveling heavy carbon steel plates prior to multi-pass welding sequences.
- Restricted Mechanical Grinding: Smoothing rough metal edges and trimming hanging hardware struts inside tight utility chaseways or narrow ceiling runs.
Key Performance & Safety Features
- XR Brushless Motor Efficiency: High-performance drivetrain deletes carbon brush wear cycles while maintaining consistent operational speed profiles under heavy feed pressures.
- PERFORM & PROTECT™ Kickback Brake: Electronic deceleration system stops abrasive wheel movement within 2 seconds if an internal binding index is breached.
- Power Loss Reset® Circuitry: Smart electrical monitor blocks unexpected motor self-starting if a fresh battery pack is inserted while the slide switch sits engaged.
- Ergonomic Slimline Grip Frame: Reduced chassis diameter allows operators to balance the tool securely while wearing thick leather welding gloves.
- Two-Position Side Control Handle: Auxiliary stabilizing handle mounts on either side of the cast metal gear box to optimize tool tracking leverage.
What's Included
- (1) DCG405B 20V MAX* XR® Brushless 4.5-Inch Angle Grinder Chassis Skin
- (1) Two-Position Adjustable Lateral Side Handle
- (1) 4.5-Inch Type 27 Depressed Center Grinding Wheel Safety Guard
- (1) Matched Inner and Outer Structural Wheel Flange Set
- (1) Hex Key Adjustment Wrench
Technical Specifications
| Brand Manufacturer: | DEWALT |
| Model Number (SKU): | DCG405B |
| Product Type Category: | Cordless Compact Angle Grinder |
| System Operating Voltage: | 20V MAX |
| Internal Motor Architecture: | High-Efficiency Brushless (XR Series) |
| Maximum No-Load Speed: | 9,000 RPM |
| Maximum Wheel Diameter: | 4.5 in |
| Spindle Arbor Standard: | 5/8 in - 11 UNC Threaded Interface |
| Actuation Switch Style: | Locking Slide Switch |
| Configuration Classification: | Bare Tool Only (Battery & Charger Sold Separately) |
| Active Safety Mechanisms: | Kickback Brake / Electronic Power Loss Reset |
| Overall Tool Frame Length: | 12.2 in |
| Net Base Skin Weight: | 3.75 lbs |
| Country of Origin Manufacturing: | China |
PRO-TIP: When dropping this cordless grinder into tight structural channel cuts, let the 9,000 RPM velocity establish its scoring kerf naturally before leaning into the frame. Maintaining a straight feed alignment line prevents binding conditions entirely, ensuring the integrated Kickback Brake remains passive while extending cutting disc life.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
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Product Reviews
★★★★★ 5
Excellent quality, excellent privacy.
Color: White, Size: 4 Panel
I love this room divider! Was easy to put together. It's easy to move around. I also bought the eight panel. I move it and change it around all the time. Good color good material good privacy.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
It works to divide a room, but it's not easy to use.
Color: Grey, Size: 6 Panel
This comes in multiple pieces and you have to build every single piece including the cloth that is between the two poles. There are plastic clips to hold the sections together, but they easily come off if you move the dividers the wrong way or try to reposition it. The only thing holding it up is rectangular shaped feet on the bottom and they are a pain when you hit it with your toes. It works if you need to divide a room, but its not pretty and there are far better options. It's cheaply made and has a habit of falling down if you are trying to use it in a straight or slightly angled line.
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Reviewed in the United States on December 26, 2022
★★★★★ 4
Nice divider
Color: Black, Size: 6 Panel
Nice divider. Set up is a bear. I am a bit concerned with stability. Overall I like it.
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Great privacy room divider
Color: Black, Size: 6 Panel, Color: Black, Size: 6 Panel
I got this room divider for our game room that shares the garage/laundry room, to separate the spaces. I was happy that it was relatively easy to put together in less than an hour with nothing more than a screwdriver (provided) although I used a small handheld drill.
The instructions were pretty straightforward and easy to understand as everything was labeled.
I have 2 small grandkids at home running around while I put this together so my timeline to completion might be longer than others.
It recommends 2 people to assemble, but I was able to complete alone in about 40 minutes total and as I said I used a small handheld drill, (although it does come with a small Philips screwdriver) which is the only tool you need for assembly.
The first two panels took me about 20 minutes but the other 4 were simple repeats after the initial 2. After all 6 panels were assembled the plastic clips to piece them together were literally a "SNAP" to put on.
The poles are made of metal and the panels are made of a very sturdy almost canvas like fabric. When held up to the light not a lot shined through so very good for privacy.
You can snap them together in sections and have 2 separate panels of 3 or what ever configuration you want. They are easy to move and bend around furniture or other obstacles, also fold flat together if you need to put them aside for storage.
This worked out just as we had planned, very easy to move around when needed and I am very happy with this product. I loved how simple it was to put together, easy instructions, and the durability and functionality of it.
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Reviewed in the United States on December 29, 2024
★★★★★ 5
Good
Color: Black, Size: 6 Panel
Love it , just what so needed , easy to put together (some what ) …
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Reviewed in the United States on May 16, 2026