Skip to main content

Koki Holdings Co.,Ltd.


Cordless Impact Driver

  • Lithium-ion Battery
  • Brushless Motor
  • IP56
  • Compatible Batteries
Industry First*1 New Hammering Mechanism Triple Hammer
* As of July 2015. Among power tools made by leading power tool manufacturers. (Surveyed by Koki Holdings.)
  • Three strikers on the hammer offers greater comfort with less cam-out
The hammer with 3 strikers reduces vibration by making 3 impacts per rotation instead of the conventional 2. This results in greater comfort and less cam-out (driver slippage from screw head), and works great for light-duty applications such as fastening short or thin screws. In order to suit various applications, a 4-step tightening mode selector function is also incorporated.
  • 4-step Tightening Mode Selector4-step Tightening Mode Selector
  • Soft mode indicator lamp
  • Soft Mode
  • 3 impacts per rotation
    (when tightening smaller diameter screws or bolts)
  • Normal mode indicator lamp
  • Normal Mode
  • 3 impacts per rotation
    (when tightening medium to larger diameter screws or bolts)
  • Power mode indicator lamp
  • Power Mode
  • 1.5 impacts per rotation
    (Only when under heavy load)
  • Self drilling screw  mode indicator lamp
  • Self Drilling Screw Mode
  • 3 impacts per rotation
  • Power Mode
Image of triple hammer mechanism When enabled under heavy load, the power mode dramatically increases the impact energy by reducing the impact rate to 1.5 impacts per rotation and extending the interval between successive impacts. This mode is ideal for long or thick screws.
  • Tightening Speed
Compared to our previous models,18V WH18DBDL2 and 14.4V WH14DBDL2 deliver up to 25% and 20% faster tightening speeds respectively. When driving a ø5.3 x 120mm wood screw into hard wood without a pilot hole.
*1 : In comparison with the WH18DDL 18V cordless impact driver.
*2 : In comparison with the WH14DDL 14.4V cordless impact driver.
  • Tightening Torque
Tightening torque is 207Nm for 18V WH18DBDL2, and 175Nm for 14.4V WH14DBDL2.
  • Newly Designed Airflow System for Optimal Cooling Efficiency
Newly designed airflow system The rear fan efficiently cools down the motor and hammer case for more durability.
  • Well-Balanced Weight Distribution for Better Work Efficiency
Well-balanced weight distribution Less user fatigue due to the well-balanced design with the center of gravity positioned at the middle finger of the grip hand.
  • Multifunction LED for Increased Visibility
    Remaining Battery Indicator
Light selector switch / Remaining battery indicator By pressing the light selector switch, the LED mode changes:
1. Always On / Off mode
2. Trigger switch interlocked with afterglow mode
  • IP56 Dust and Water Resistant*
IP56 Thanks to the unique design of dust-protective cooling windows and fully plastic coating on some important inner parts, this product conforms to IP56 protection class ratings (dust and water resistance) for electrical equipment as stipulated by the international IEC regulations.

* The equipment has been designed to withstand the effects of dust and water, but there is no guarantee that it will not malfunction. Do not use or leave the equipment in locations where it is subject to excessive amounts of dust, or in locations where it is submerged in water or subject to rainwater. (Only the main unit conforms to the IP56 protection class ratings when equipped with a battery.)

  • High Capacity 6.0Ah Lithium-ion Batteries*
  • for Longer Runtime
18V WH18DBDL2 drives up to 4070 screws per charge, and 14.4V WH14DBDL2 up to 3000 screws.
Wood screws 4.0mm in dia. x 50mm in length, cedar without pilot holes.
* These numbers are for reference purposes. They may vary according to the material to be screwed and operating conditions.
  • Fast Charging
  • offered by Our original charging technology
Charging time is approximately 38 minutes for 6.0Ah (18V/14.4V) batteries, 32 minutes for 5.0Ah (18V/14.4V) batteries. Built-in cooling system
reduces charging time by efficiently cooling both the battery and charger at the same time during charging.
UC18YSL3 Charger Large charge indicator lamp
with 4 color status LED and sound alert once charging is complete
USB port (5V - 2A)
Capable of charging at low & high temperatures
(-10℃ to 50℃)

* The included batteries and charger vary by country or area.


Capacity Ordinary Bolt 5 - 18mm (3/16 - 23/32") 5 - 16mm (3/16 - 5/8")
High Tension Bolt 5 - 14mm (3/16 – 9/16")
Machine Screw 4 - 10mm (5/32 – 3/8")
Self Drilling Screw 3.5 - 6mm (1/8 - 1/4")
Drive 6.35mm (1/4") Hex Bit Shank
Tightening Torque 207Nm (1,832in.-lbs.) 175Nm (1,550in.-lbs.)
Battery Voltage 18V 14.4V
Power Output 108Wh for BSL1860
90Wh for BSL1850
54Wh for BSL1830
87Wh for BSL1460
72Wh for BSL1450
44Wh for BSL1430
No Load Speed Power Mode 0 – 2,900/min 0 - 2,800/min
Normal Mode 0 – 2,900/min 0 - 2,800/min
Soft Mode 0 - 900/min
Self Drilling Screw Mode 0 – 2,900/min 0 - 2,800/min
Full Load Impact Rate Power Mode 0 - 4,000/min 0 - 3,900/min
Normal Mode 0 - 4,000/min 0 - 3,900/min
Soft Mode 0 - 1,900/min 0 - 1,800/min
Self Drilling Screw Mode 0 – 2,100/min 0 - 1,900/min
Overall Length 127mm (5")
Weight *1 1.6kg (3.5lbs.) with BSL1860 / BSL1850 / BSL1830 1.4kg (3.1lbs.)
1.3kg (2.9lbs.) with BSL1830C
Vibration Total Values (triax vector sum) *2 Impact tightening of fasteners of the maximum capacity of the tool Vibration emission value ah = 16.7m/s2 Vibration emission value ah = 12.6m/s2
Uncertainty K = 1.5m/s2
Standard Accessories *3 2 Batteries (BSL1860, BSL1850, BSL1830, BSL1830C) 2 Batteries (BSL1460, BSL1450 or BSL1430)
Charger (UC18YFSL / UC18YSL3), Battery Cover, Carrying Case

*1 : Weight according to EPTA-Procedure 01/2003.
*2 : Vibration total values (triax vector sum)determined according to EN60745.
*3 : The included batteries and charger vary by country or area.

Notify the transporting company that a package contains a lithium-ion battery, inform the company of its power output and follow the instructions of the transportation company when arranging transport.
- Lithium-ion batteries that exceed a power output of 100Wh are considered to be in the freight classification of Dangerous Goods and will require special application procedures.
- For transportation abroad, you must comply with international law and the rules and regulations of the destination country.

Download Adobe Reader
In order to read a PDF file, you need to have Adobe® Reader® installed in your computer.