Electric Chainsaw Factory Direct Supply

BOSI Tools is a professional electric chainsaw manufacturer from China, offering both the Conventional Electric Chainsaw and the Two-Stroke Gasoline Chainsaw. From home firewood cutting to forestry harvesting, the efficiency of an electric chainsaw depends on chain speed and consistent lubrication — BOSI combines powerful 1900W to 2100W output with an automatic oiling system and a high-hardness quenched chain to make cutting smooth and effortless. Different working conditions demand different tools, so feel free to contact us for a customized selection solution.

Working Principle

The working principle of a BOSI chainsaw is to take the high rotational speed of a motor or gasoline engine, reduce it and amplify the torque through a gear set, and then drive a sprocket. The sprocket pulls a quenched chain in a high-speed loop around the edge of the guide bar, and the L-shaped cutting teeth on the chain plane off wood chip by chip to complete the cut.

The corded electric models use a 1900W/2100W pure copper motor as the power source. After gear reduction, this drives the sprocket, and the chain slides at a high linear speed of 480 m/min along the guide bar rail.

The Two-Stroke Gasoline Chainsaw, on the other hand, is powered by a 54.5cc displacement engine that outputs 2.4 kW at 8500 rpm. A centrifugal clutch automatically disengages the drive at idle speed for safety, and when the throttle is applied, the clutch engages and drives the sprocket.

During the cutting process, the depth gauge of each chain tooth controls the chip thickness per tooth, while an automatic oil pump continuously sprays lubricant onto the guide bar and chain to reduce friction and prevent overheating. A toolless adjustment knob makes it easy to adjust the chain tension, ensuring the chain runs stably on the bar without derailing. A thickened and widened protective bumper also blocks wood chips from flying backward during high-speed cutting, ensuring operator safety.

What Materials Can Be Processed?

BOSI chainsaws are suitable for the following wood processing scenarios:

1. Log Bucking and Cross-Cutting

Cutting logs into lengths and bucking sections in forestry harvesting. The 1900W/2100W Conventional Electric Chainsaw, with a chain speed of 480 m/min and a high-hardness quenched chain, cuts quickly through both wet and dry wood. The 54.5cc Two-Stroke Gasoline Chainsaw, with 2.4 kW of power, is suited for bucking large-diameter logs in forested areas without electricity.

2. Home Firewood Cutting and Preparation

Pruning garden trees and sawing fireplace firewood. The 405mm guide bar can cut through wood up to approximately 350mm in diameter in a single pass, and the automatic oiling system reduces chain wear and extends service life.

3. Wood Rough-Milling and Lumber Processing

Edging square timbers and rough-cutting boards in small wood processing factories. A dust-proof switch prevents wood chips from entering the machine, and the soft-grip handle provides a comfortable grip for continuous sawing tasks.

4. Orchard and Garden Maintenance

Pruning fruit trees and clearing dead wood. The gasoline chainsaw has no cord restrictions, offering high mobility. The thickened brake plate quickly stops the saw in the event of kickback, helping to prevent accidental injury.

Safety Precautions for Use

1. Personal Protective Equipment

When operating a chainsaw, safety goggles or a face shield, cut-resistant gloves, safety shoes, and snug-fitting work clothes must be worn. The operation of a gasoline chainsaw generates significant noise, so ear muffs must be worn. Loose clothing is strictly prohibited to prevent it from being caught in the chain.

2. Pre-Cutting Inspection

Confirm that the chain has been adjusted to the correct tension using the toolless adjustment knob, and when pulled by hand it should slide smoothly without sticking. Ensure the automatic oil pump’s oil reservoir is full of lubricant, and that the power cord or fuel lines are intact.

3. Starting and Grip

For corded models, ensure the power supply is properly grounded before starting. For a cold-start on the gasoline chainsaw, pull the starter rope crisply, and allow the engine to idle and warm up after starting. Hold the rubber-coated, non-slip handles firmly with both hands, wrapping your thumbs around the handles, and stand with your body out of the plane of the guide bar.

4. Cutting Operation

When starting a cut, rest the lower part of the guide bar against the wood, and only initiate the cut after the chain has reached full speed. Feed at a constant speed without forcing. Never cut with the tip of the guide bar, as this can cause kickback. The thickened brake plate is pushed forward to trigger the brake during violent kickback; a test cut should be performed within a controlled range.

5. Environment and Safety Distance

Keep the cutting area free of obstructions and bystanders, with a safety radius of no less than 3 meters. The gasoline chainsaw must never be used in an enclosed space to prevent carbon monoxide poisoning. The thickened and widened protective bumper effectively blocks flying wood chips, but the operator should still keep their face away from the cutting plane.

6. Shutdown and Maintenance

After turning off the tool, wait for the chain to come to a complete stop before setting it down. After finishing the cutting work, promptly clean wood chips from the groove of the guide bar, check the chain for wear, and sharpen the cutting teeth as needed. For gasoline models, regularly clean the air filter and carburetor, and drain the fuel before storage. The automatic oil pump system must always have a sufficient supply of lubricant; running it without oil will cause the chain and guide bar to burn up and seize.

Our Chainsaw Products vs. Other Brands: Why Choose BOSI?

BOSI chainsaws bring together practical features like automatic lubrication, a quenched chain, and safety protection, allowing home users and small to medium forest farms to obtain an efficient and safe sawing experience at a reasonable cost.

How to Choose the Right Chainsaw?

The key to choosing a chainsaw is the working environment and the diameter of the wood. For home firewood cutting or small processing scenarios with a stable power supply, a Conventional Electric Chainsaw is the economical choice.

The 1900W model is equipped with a thickened and widened protective bumper and a toolless adjustment knob, and its automatic oiling system reduces chain wear, making it suitable for garden firewood and wood rough-milling.

The 2100W model upgrades to a dust-proof switch and a soft-grip handle, with a more powerful pure copper motor and better temperature rise control for extended operation.

If working in a forested area without electricity, or if greater cutting capacity is needed, the Two-Stroke Gasoline Chainsaw is the essential option. Its 54.5cc displacement, 2.4 kW engine paired with a 20" guide bar, a split-type vibration-dampening suspension that prevents hand numbness during prolonged use, and a linked carburetor make for easy starting and fuel efficiency, while the 450ml fuel tank and 260ml oil tank support long periods of continuous timber cutting.

When purchasing, also pay attention to matching the guide bar length to the wood diameter: a 405mm guide bar can cut wood up to approximately 350mm in diameter, while a 20" guide bar accommodates bucking of larger-diameter logs. For the gasoline model, pay attention to the proper fuel-oil mixing ratio; for the electric chainsaw, ensure the on-site power supply capacity is adequate.