The compact Humberg cordless mini chainsaw is ideal for quick garden pruning — it offers a brushless motor, 2× 21 V batteries (2 Ah), automatic chain oiling, and quick tool-free chain tensioning. Thanks to high RPM and chain speed, it cuts smoothly and confidently even through harder wood, while remaining lightweight and easy to control.
Brushless motor and fast, smooth cutting
The high-speed brushless motor (up to 21,000 rpm) ensures stable power and a confident cut. The chain reaches speeds of up to 8.2 m/s, so the saw cuts briskly and without snagging even under heavier load.
Automatic oiling and tool-free chain tensioning
For longer service life and smooth operation, the saw features automatic chain lubrication at regular intervals. You can adjust chain tension quickly using the thumbwheel — no wrenches and no disassembling the cover.
Complete set in a durable case (3 bars, 2 batteries)
The practical XXL set includes 2× 21 V 2 Ah batteries, bars: 2× 6" and 1× 8", and accessories in a sturdy carry case. Every part has its place, making storage and transport convenient and safe.
This cordless pruning chainsaw is a great helper for work in the garden, around the house, and in the workshop. It combines high performance with low weight and an ergonomic grip, so it’s comfortable to use even during longer pruning jobs. The brushless motor provides smoother operation and reliable pulling power while cutting.
Included is a practical set with three bars (2× 6" and 1× 8") and matching chains. Everything is stored in a sturdy transport case with compartments, so nothing moves around and the tool is ready to use.
Uses:
- pruning branches and shrubs
- cutting boards, battens, panels, and trim
- smaller carpentry tasks
- removing small trees and tough growth
Main advantages:
- Brushless motor for fast, stable performance
- High RPM up to 21,000 rpm for quick cutting
- Chain speed up to 8.2 m/s for smooth cutting
- Automatic oiling of the chain + option for extra lubrication with a pump
- Tool-free chain tensioning — quick adjustment anytime
- Safety features (switch lock, finger guard, and chain cover)
- 2× Li-Ion 21 V 2 Ah batteries for longer work without waiting
- Case for easy storage and transport
Note: before first use, fill the chain-lubrication tank with oil.
Specifications
- Brand
- Humberg
- Model
- HM-421
- Power
- 420 W
- Speed
- 21,000 rpm
- Motor type
- brushless
- Chain speed
- up to 8.2 m/s
- Bar length
- 2× 6" (15 cm) + 1× 8"
- Chain pitch
- 1/4"
- Number of chain links
- 37
- Battery
- Li-Ion 21 V
- Battery capacity
- 2000 mAh (2 Ah)
- Number of batteries in the package
- 2 pcs
- Charger power supply
- 220–240 V
- Weight with battery
- 1.4 kg
- Set weight with case
- 2.6 kg
- Package contents
- mini chainsaw, 2× 21 V 2 Ah battery, 2× 6" bar, 1× 8" bar, 2× 1/4" chain, charging station, durable case, manual
