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The DEWALT D25899K SDS Max demolition hammer combines a 14.0 Amp motor with dust-sealed internals for reliable concrete chipping and chisel work.
Pair withDEWALT D25911K 27 Lbs. SDS MAX Inline Chipping Hammer Kit$100.00
Categories : tools
SKU : WOR-TOO-908
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The DEWALT D25899K SDS Max Demolition Hammer is a 21-pound corded breaker built for jobs that demand sustained chipping power without overheating. Its 14.0 Amp motor and non-air pumping beat piece keep masonry dust out of the mechanism, so the tool keeps hitting hard even in abrasive demolition work. It's a solid choice for contractors and serious remodelers who need an SDS Max hammer that can take a beating.
Changing the chisel is straightforward. Unplug the hammer, pull back the SDS Max chuck collar, insert the chisel, and release the collar to lock it in place. To rotate the chisel, use the one-step rotation switch and turn the chisel to the desired angle. The 12-position rotation lets you set the tool for the work without repositioning your body.
The non-air pumping beat piece prevents masonry dust from being pulled into the tool, which keeps internal components and seals from wearing out quickly. Spring-loaded dust seals add another layer of protection. The large on/off rocker switch is easy to operate with one finger, and the rear rubber handle gives you a firm grip with one or two hands.
At 21 lb, this hammer is best handled with two hands for horizontal or downward chipping. It accepts standard SDS Max chisels and bits, making it a versatile demolition tool. The 14.0 Amp motor has overload protection, so it can handle tough concrete without tripping.
14.0 Amp motor with overload protection sustains high chipping performance without overheating.
Non-air pumping beat piece keeps masonry dust out of the unit, extending tool and seal life.
Spring-loaded dust seals add extra protection on dusty job sites.
One-step chisel rotation with 12 positions lets you set the right angle quickly.
Large rocker switch and rear rubber handle keep control simple and comfortable.
Model: D25899K
Handle: Large rear rubber handle
Switch: Large rocker switch
Weight: 21 lb (9.5 kg)
Amperage: 14.0 Amp
Chuck Type: SDS Max
Dimensions: 26 x 9 x 11 in (66 x 22.9 x 27.9 cm)
Power Source: Corded electric
Product Type: SDS Max Demolition Hammer
Chisel Rotation: 12 positions
Dust Protection: Non-air pumping beat piece and spring-loaded dust seals
Seller: Workbench World
MPN: D25899K
When you are breaking concrete, dust is the enemy. The non-air pumping beat piece and spring-loaded seals keep the motor chamber cleaner, so the tool holds up longer than a hammer with open breathing. That is why the D25899K earns its place on concrete crews.
Instead of repositioning your body or the tool, you can rotate the chisel to the angle you need. It takes seconds and makes clean trenches and scaling jobs much faster.
Unplug the hammer, pull back the SDS Max chuck collar, insert the chisel, and release the collar to lock it in place. To rotate the chisel, use the one-step rotation switch and turn the chisel to the desired angle.
Yes, the D25899K accepts standard SDS Max accessories, including point, flat, and scaling chisels, plus core bits.
It prevents masonry dust from being pulled into the tool, which keeps internal components and seals from wearing out quickly.
With the tool unplugged, insert the shank into the SDS Max chuck, press firmly, and turn the chuck collar until it snaps over the shank. Pull on the chisel to confirm it is locked.
At 21 lb, the D25899K is best for two-handed horizontal or downward chipping; for overhead work, a smaller SDS-plus hammer would be easier to manage.
I used this to demo a concrete patio. It tore through 4 inches of slab like butter. The anti-vibration helps a lot. My arms weren't jelly after an hour. This is a professional-grade tool.
This thing is a monster. It's really heavy but it works. I'm a small person so I needed a helper. Still, it's great.
I've been in construction for 35 years. This demo hammer is solid. It takes abuse and keeps going. The dust seal has kept it alive on dusty jobs. I've used it daily for months with zero issues.
We rented one and then bought this. It paid for itself in one job. The power is incredible. It's easy to change bits. I recommend it.
It's a lot of hammer for the money. I wish it had a carrying case. But it gets the job done.
Used it for a bathroom remodel. It chipped out tile and concrete quickly. The tool is well balanced. Even my wife could use it with the vibration control.
Rips through concrete.
I'm a general contractor but this is too heavy for overhead work. My crew uses it for floors. It's powerful but not for everything.
It's expensive but you get what you pay for. I've owned other brands and this is the best. Service from Dewalt is great too.
