DeWalt DCS590B: problems, parts and running costs
Checked: 2026-10-17
Summary
The DCS590B is the bare-tool version of DeWalt’s 20V MAX XR brushless 7-1/4 in. circular saw (up to 1,700 MWO, 5,500 RPM no-load), and the battery and charger are sold separately [1]. The complaint owners hit most is the uncoated stamped-aluminum shoe, which drags on long rip cuts, along with a partly obstructed left-side sightline [4][5]. No source publishes a per-year running cost; the recurring spend is blades plus whatever battery, charger, dust port and Tool Connect chip a new owner has to buy [1][3].
Common problems and fixes
- Shoe drags on long cuts — the most common complaint: the unpolished stamped-aluminum base plate does not glide like coated magnesium shoes, and the friction is clearly noticeable on 4 ft rip cuts; there is no fix because it is a design characteristic, not a defect, so warranty does not apply [4][5].
- Lower guard hangs up on compound miters — documented on a compound miter cut in a 2x10, blamed on the guard catching the board, and a rare cut for most users; the manual requires the guard to close freely — clean sawdust and debris from the guard path and spring with dry air or a soft brush, and if it still closes slowly or incompletely, stop using the saw and take it to a service center [3][5].
- Depth markings fill with sawdust — the stamped depth-of-cut gauge is hard to read once dusty; wipe it between adjustments [4].
- Bare plastic front pommel grip — no rubber overmold, texturing only on the underside; a comfort issue with no fix [4].
- Out-of-square cuts after heavy use — user-fixable: the manual documents re-squaring the base plate with an underside set screw [3].
Parts and consumables
- Charger (DCB1106 in the kit) — sold separately with the bare tool [1][2].
- Blade-change wrench — the kit includes one and the manual shows one stored under the battery compartment, but DeWalt’s bare-tool contents list does not confirm it ships with the DCS590B [2][3].
Yearly running cost
No source publishes a dollar-per-year figure. The recurring costs are blades — a wear item the manual says to change when the saw gets hard to push, the motor strains, or the blade builds excessive heat — plus, for a buyer new to the platform, a battery and charger that are not in the box, and the optional dust port and TOOL CONNECT chip [1][3]. Pro Tool Reviews referenced the bare tool at $249 and the kit at $349 (February and March 2025); the kit bundles the 8 Ah DCB2108 battery and DCB1106 charger that the bare tool lacks [4][5].
When it is a good buy
Pro Tool Reviews referenced the bare tool at $249 and the kit at $349 (February and March 2025), against the Milwaukee M18 Fuel 2834 at $249 bare and $449 as a kit with a 12.0 Ah Forge battery [4][5]. The sources carry no live price, so there is no buy/don’t-buy band — treat those as reference prices and compare with the store price on the day you buy. Named alternatives from the same testing:
- DeWalt 60V FlexVolt DCS578 — 2,456 UWO; the pick if absolute performance matters more than staying on 20V batteries [4].
If you do not already own DeWalt 20V batteries, add a pack and charger before comparing — the bare tool ships with the saw only [1].