DEWALT DCS577B
By DEWALT · Circular Saws · Power Tools
- No-load speed 5800 rpm
- Depth of cut 2-7/16 in at 90 degrees
- Bevel 53 degrees
- Weight 10.8 lb
- Blade diameter 7-1/4 in
Lowest price seen
$274.99
from $274.99 at eBay · Checked Oct 14, 2026
- eBay $274.99View at eBay
- Toolup $329.00View at Toolup
- DEWALTView at DEWALT
- eBay (used) eBay: used, open-box, refurbishedView at eBay (used)
- The Power Tool StoreView at The Power Tool Store
- WalmartView at Walmart
- The Home DepotView at The Home Depot
- Acme ToolsView at Acme Tools
- AmazonView at Amazon
Prices are snapshots. Check the current price with the store.
Summary
A 60V MAX FLEXVOLT cordless worm-drive-style circular saw for framing crews already on the DEWALT battery platform. Check whether you already own FLEXVOLT batteries before you buy: the saw is bare tool only, and standard 20V MAX batteries will not run it.
Strengths
- Top-tier cutting power: PTR cut 115 linear feet of roofing material on one 9.0Ah battery.
- Fastest in the rear-handle group in PTR time trials.
- Excellent tracking and perfect notch accuracy at 45 and 90 degrees.
- Handle ergonomics preferred over Milwaukee’s in PTR’s 2020 comparison.
- FLEXVOLT batteries work across DEWALT’s 20V/60V MAX tool line.
- Magnesium shoe, electronic brake, dust blower and rafter hook come standard.
Weaknesses
- Guard hesitates on compound cuts, PTR’s main performance con.
- No LED light, expected on premium saws.
- Shoe friction is higher than competitors; some users sand the base to glide better.
- Push-in safety instead of push-down trigger safety.
- 2400 W is a peak rating, not continuous output.
- Superseded by the DCS578B in DEWALT’s current lineup.
Verified specifications
| Blade diameter | 7-1/4 in. |
|---|---|
| No-load speed | 5800 RPM. |
| Motor | brushless, 2400 W peak output. |
| Depth of cut at 90 degrees | 2-7/16 in; at 45 degrees: 1-7/8 in. |
| Bevel capacity | 53 degrees with stops at 45 and 22.5 degrees. |
| Arbor | 5/8 in with diamond knockout. |
| Blade orientation | left of motor; rear handle. |
| Shoe | magnesium. |
| Electric brake | yes. |
| Dust blower | integrated. |
| Rafter hook | included. |
| Onboard blade wrench storage | yes. |
| Tool Connect | Tag-Ready (tag sold separately). |
| Battery and charger | sold separately (bare tool). |
| Weight | 10.5–10.87 lbs bare; 13-3/4 lbs with 9.0Ah battery. |
| Length | 19.688 in. |
| Warranty | 3-year limited, 1-year free service, 90-day money-back guarantee. |
Full research notes and sources
Cutting power and battery life
PTR’s January 2018 review confirmed top-tier cutting power: the saw cut 115 linear feet of roofing material (shingles, tar paper, plywood, nails) on a single 9.0Ah battery and completed a full-depth rip cut through a wet 8-foot pressure-treated 4x4 in less than 12 seconds. It was the fastest saw in the rear-handle group in time trials. ToolGuyd’s launch demo described the saw floating through a stack of three 3/4-inch OSB sheets, feeling like guiding rather than pushing.
Runtime per charge in production framing conditions has not been published. ToolGuyd commenters questioned real-world battery life under heavy loads, and no independent instrumented test has measured it.
Ownership cost and value
The bare tool sells for about $329 at MaxTool, AIH, Empire Rigging and Authorized Tool Outlet (2026-10-12). Battery and charger are extra: a FLEXVOLT 6.0Ah battery (DCB606) and charger (DCB118) typically add $150–250 combined, bringing total ownership cost with one battery and charger to approximately $480–580.
Launch pricing in October 2017 was $259 bare tool, with the DCS577T1 6Ah kit at $369 and the DCS577X1 9Ah kit at $399. PTR listed the bare tool at $299 in January 2018 and $249 in July 2020. The 3-year limited warranty with 1-year free service and 90-day money-back guarantee is shorter than Milwaukee’s 5-year offering.
For users already invested in the DEWALT 20V/60V ecosystem, the bare tool price is reasonable. For new users, the total platform cost is significant and must be compared against kit pricing and competing cordless systems.
Is it worth it?
If you already own FLEXVOLT batteries, the DCS577B delivers confirmed top-tier cutting power at a fair bare-tool price. If you are new to the platform, the $480–580 total cost with battery and charger demands comparison against kit variants and competing cordless rear-handle saws. The DCS578B has largely superseded this model in DEWALT’s lineup, so check availability and pricing of both before deciding. No widespread failure modes or reliability complaints have surfaced, but long-term reliability data is thin.
Which model this is
This page covers the DEWALT DCS577B, a FLEXVOLT 60V MAX 7-1/4-inch cordless worm-drive-style circular saw sold as a bare tool. The Amazon listing is ASIN B0753QHKW7. Do not confuse it with the DCS570B (20V MAX), DCS577T1 (kit variant), DCS578B (successor), or the corded DWE575SB.
Sources
Manufacturer:
Independent reviews:
- Pro Tool Reviews: DeWalt FlexVolt Worm Drive Style Saw Review (Jan 2018)
- Pro Tool Reviews: DeWalt vs Milwaukee M18 Fuel Rear-Handle Circular Saw (Jul 2020)
- TechReviewer: DCS577B Specs Overview
- ToolGuyd: New DeWalt FlexVolt 60V Brushless Rear-Handled Framing Saw (Oct 2017)
Owner reports:
- No owner reports were found in the sources checked.
Parts and stores:
