20V Brushless Impact Wrench with 350N.m Torque & Auto-Stop Function
PRODUCT DESCRIPTION
High-Torque Brushless Performance & Robust Drive System
The core of the KIW21801 is a high-efficiency **4815 all-copper brushless motor**, engineered for maximum power delivery, superior heat dissipation, and extended service life without the maintenance of carbon brushes. This motor generates an impressive **350N.m of maximum torque**, capable of tackling stubborn lug nuts, large bolts, and heavy-duty fasteners with ease. The torque is transmitted through a robust **1/2" square drive chuck** and a **tungsten steel shaft**, renowned for its exceptional hardness, high melting point, and impact resistance to withstand years of rigorous use.
Intelligent Control for Efficiency & Safety
This impact wrench incorporates intelligent features designed for professional workflow. The **stepless speed trigger** allows for precise, variable control from 0 to 2600 RPM by adjusting trigger pressure. A critical innovation is the **reverse auto-stop function**: when loosening a fastener, the motor automatically stops rotation as the bolt or nut is released, preventing it from falling off and getting lost, thereby saving time and enhancing safety on the job site. A dedicated **forward/reverse switch** provides easy control over tightening and loosening directions.
Durable Construction & Ergonomic Design
Built for longevity in tough environments, the wrench features an **all-aluminum machine head** that provides excellent durability and heat dissipation. The ergonomic **soft-grip handle** ensures comfort and control during prolonged use, reducing user fatigue. An integrated **LED work light** illuminates dark workspaces, while a clear **power indicator** on the compatible 20V battery (available in 2.0/3.0/4.0Ah) shows remaining charge at a glance. All batteries include comprehensive protection against over-current, over-charge, over-voltage, and overheating.
Versatile Professional-Grade Applications
As a **true multi-purpose tool**, the KIW21801 serves primarily as a high-torque impact wrench for automotive repair (wheel changes, suspension work), machinery maintenance, and steel construction. Its power and drive system also make it suitable for use as a **powerful driver for large lag screws and bolts**, effectively functioning in roles beyond a standard wrench. It is the ideal cordless solution for mechanics, fabrication workshops, and construction crews requiring reliable, high-torque fastening power.
Technical Specifications
Model: KIW21801 (Around Series)
Motor Type: Brushless Motor (Model 4815)
Voltage: 20V DC
Max Torque: 350 N.m
No-load Speed: 0 – 2600 RPM
Impacts per Minute: 0 – 3000 BPM
Chuck Type: 1/2" Square Drive
Head Construction: All-Aluminum with Tungsten Steel Shaft
Key Features: Reverse Auto-Stop, Stepless Speed, LED Work Light, Battery Gauge
Battery Options: 2.0Ah / 3.0Ah / 4.0Ah Lithium-Ion (with full protection)
Charging: Dedicated AC-DC Charger (1-2 hours)
Product Weight: 1.784 kg
Product Dimensions: 161 x 77 x 255 mm
Customization: Full OEM/ODM support available.
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