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DEWALT 20V MAX Hammer Drill & Driver, Cordless, Tool Only (DCD998B)

DEWALT 20V MAX Hammer Drill & Driver, Cordless, Tool Only (DCD998B)

Q: I purchased the dcd998b hammer drill. when using it and i release the trigger, there is a loud clunking sound. is this normal?

Not sure your meaning "clunking". There is a sound where the device is using the rotational energy to transfer back to the battery. It makes a noise during this braking time. This is mostly heard when the drill is not driving (actively loaded). Try actually drilling/driving something and see if the sound goes away (resistance to drilling or driving will stop the bit). If the noise persists, there may be something wrong.

Product ID: 336593872

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Details

Brand
DEWALT
Power Source
Battery
Maximum Rotational Speed
78000 rph
Voltage
20
Amperage
8 Amps

⚡57% more runtime with brushless motor

💡3-mode LED 20x brighter spotlight

🔩Heavy-duty 1/2-in ratcheting metal chuck

Frequently Bought Together

DEWALT 20V MAX XR Cordless Hammer Drill, Power Direct, Tool Only (DCD998B)

DEWALT 20V MAX 5 Ah Lithium Ion Battery 2-Pack (DCB205-2)

DEWALT 20V MAX XR Impact Driver, Brushless, 1/4", 3-Speed, Bare Tool Only (DCF845B)

Description

⚡ Power through projects with DEWALT’s unstoppable 20V MAX Hammer Drill!

ADAPTIVE SPEED CONTROL - 3-speed settings optimize performance for every material and task.
NEXT LEVEL BATTERY TECH - POWERDETECT tech boosts power by 29% and runtime by 60% with 8Ah XR battery.
ILLUMINATE YOUR WORKSPACE - 20x brighter 3-mode LED with 20-minute auto shutoff keeps dark corners in check.
PRECISION MEETS DURABILITY - All-metal transmission and nitro-carburized chuck ensure rock-solid bit grip and longevity.
UNMATCHED POWER EFFICIENCY - Brushless motor delivers 57% more runtime for marathon workdays.

The DEWALT 20V MAX Hammer Drill & Driver (DCD998B) is a cordless powerhouse featuring a brushless motor that extends runtime by 57%, a heavy-duty 1/2-inch ratcheting nitro-carburized metal chuck for superior bit grip, and a 3-speed all-metal transmission for optimized drilling speed. Its 3-mode LED light is 20 times brighter than previous models, perfect for low-light conditions, and the POWERDETECT technology enhances power output by 29% and runtime by 60% when paired with an 8Ah XR battery. Designed for professionals demanding durability, precision, and efficiency in one sleek, yellow package.

Specifications

Brand	DEWALT
Power Source	Battery Powered
Maximum Rotational Speed	78000 rph
Voltage	20
Amperage	8 Amps
Maximum Chuck Size	0.5 Inches
Color	Yellow
Included Components	(1) DCD998 20V MAX XR Cordless Brushless 1/2 in. Hammer Drill/Driver with POWER DETECT
Special Feature	Variable Speed
Product Dimensions	12.3"L x 8.7"W x 4.06"H
Material	Blend
Maximum Torque	80 Newton Meters
Number of Speeds	3
Speed	2800 RPM
Item Weight	4.8 Pounds
Maximum Power	300 Watts
Item Torque	59.65 Foot Pounds
Drill Type	Hammer Drill
Battery Capacity	8 Amp Hours
Is Electric	Yes
UPC	885911677868
Global Trade Identification Number	00885911677868
Drilling Capacity Wood	0.5 Inches
Manufacturer	DEWALT
Drilling Capacity Metal	0.5 Inches
Part Number	DCD998B
Item Weight	4.81 pounds
Item model number	DCD998B
Is Discontinued By Manufacturer	No
Size	One Size
Style	20V MAX XR w/ POWERDETECT
Wattage	400 watts
Item Package Quantity	1
Special Features	Variable Speed
Batteries Included?	No
Batteries Required?	Yes
Battery Cell Type	Lithium Ion

Have a Question? See What Others Asked

How do i buy just the handle?

What is the units watt out rating for the dcd 998b hammer drill?

I purchased the dcd998b hammer drill. when using it and i release the trigger, there is a loud clunking sound. is this normal?

What is the UWO (torque) on this model?

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