The Husqvarna 3120XP is one of the most powerful chainsaws in the world, designed for professionals who require extreme cutting capacity. When paired with a 47-inch (120 cm) bar, this beast of a machine becomes a go-to tool for felling large trees, milling lumber, and tackling the toughest woodcutting tasks. In this article, we’ll dive into the specifications, performance, and best practices for using the Husqvarna 3120XP with a 47” bar.
Overview of the Husqvarna 3120XP
The Husqvarna 3120XP is designed for professional loggers and sawmill operators who need a powerful chainsaw for cutting massive timber. It is the largest chainsaw in Husqvarna’s lineup, boasting a high-powered engine that provides excellent torque and cutting speed.
Key Specifications
- Engine Displacement: 118.8cc
- Power Output: 8.31 HP (6.2 kW)
- Bar Length Options: 24” – 47” (60 cm – 120 cm)
- Chain Pitch: 3/8” or .404”
- Weight (Without Bar & Chain): 22.9 lbs (10.4 kg)
- Fuel Tank Capacity: 2.64 US pints (1.25 L)
- Oil Tank Capacity: 1.48 US pints (0.7 L)
With its massive power output and large displacement, the 3120XP is built to handle the most challenging cutting jobs.
Why Use a 47” (120 cm) Bar?
While the Husqvarna 3120XP is compatible with shorter bars, equipping it with a 47-inch bar unlocks its full potential for extreme cutting tasks. Here’s why you might need a bar of this size:
1. Cutting Large Trees
A 47-inch bar allows you to cut through thick tree trunks in a single pass, making it ideal for forestry work where efficiency is key.
2. Milling Lumber
Pairing the 3120XP with an Alaskan sawmill setup enables you to cut your own slabs and planks from large logs. The extended bar length ensures a clean, even cut across the entire log width.
3. Reduced Cutting Effort
With a longer bar, you can make deeper cuts without having to reposition the saw constantly, reducing fatigue and increasing efficiency.
Performance & Handling
Despite its size, the Husqvarna 3120XP is surprisingly well-balanced for a saw of this magnitude. However, using a 47-inch bar does require some adjustments in handling and operation.
Starting the Chainsaw
Due to the large engine displacement, the 3120XP requires a firm pull to start. It features a decompression valve, which makes starting easier by reducing cylinder pressure.
Power and Torque
With over 8 HP, the 3120XP produces an incredible amount of torque, allowing it to cut through dense hardwoods effortlessly. When paired with a 47-inch bar, you’ll need a high-quality full-chisel chain to match the saw’s capabilities.
Weight and Maneuverability
At nearly 23 lbs (without the bar and chain), this is not a lightweight saw. The additional weight of a 47-inch bar and a large chain adds to the challenge, making it important to use proper cutting techniques and avoid fatigue.
Best Chains for a 47” Bar
When using a 47-inch bar, choosing the right chain is crucial for efficiency and longevity. Here are the best chain options:
- .404” Pitch, Full Chisel Chain – Offers aggressive cutting performance, ideal for large logs.
- Skip-Tooth Chain – Reduces drag and keeps RPMs high, essential for longer bars.
- Semi-Chisel Chain – Provides a longer-lasting edge, great for cutting dirty or frozen wood.
Maintenance Tips for a 47” Bar Setup
A chainsaw of this size requires regular maintenance to keep it running efficiently and safely. Here’s what you need to do:
1. Keep the Chain Sharp
A dull chain increases cutting resistance and puts unnecessary strain on the engine. Sharpen your chain regularly using a professional-grade file or bench grinder.
2. Check Chain Tension
A longer bar means more potential for chain stretching. Ensure the chain is properly tensioned before every use—tight enough to stay on the bar but loose enough to rotate freely.
3. Proper Oiling
With an extended bar, proper lubrication is even more critical. The Husqvarna 3120XP has an automatic oil pump, but you may need to manually increase oil flow for longer bars.
4. Inspect the Bar for Wear
A 47-inch bar experiences more stress than shorter bars. Check for signs of wear, such as:
- Uneven rail wear
- Burrs forming along the edges
- Excessive heat buildup
If needed, use a bar rail dresser to maintain an even surface.
5. Fuel & Air Filter Maintenance
- Use high-quality, pre-mixed fuel or mix your own at a 50:1 ratio with high-octane gasoline.
- Regularly clean or replace the air filter to ensure proper airflow and performance.
Safety Considerations for a 47” Bar Chainsaw
Due to its power and size, extra precautions should be taken when operating the Husqvarna 3120XP with a 47-inch bar.
1. Wear Proper Protective Gear
Always wear the necessary safety equipment, including:
- Chainsaw chaps
- Heavy-duty gloves
- Safety goggles or a face shield
- Ear protection
- Steel-toe boots
2. Maintain a Firm Grip
A longer bar generates more kickback potential. Always hold the saw with both hands and use a firm stance when cutting.
3. Use a Chain Brake
The Husqvarna 3120XP is equipped with an inertia-activated chain brake. Always engage it when moving between cuts.
4. Beware of Kickback
Longer bars increase the risk of kickback, especially when using a full-chisel chain. Avoid cutting with the tip of the bar, and maintain control at all times.
Who Should Buy a Husqvarna 3120XP with a 47” Bar?
This chainsaw setup is not for casual users—it’s built for professionals who need extreme cutting power. It’s ideal for:
- Professional Loggers – Handling massive tree-felling operations.
- Sawmill Operators – Processing large logs efficiently.
- Arborists & Land Clearing Crews – Tackling heavy-duty cutting jobs.
If you need a chainsaw that can handle the toughest woodcutting tasks, the Husqvarna 3120XP with a 47” bar is one of the best tools for the job.
Final Thoughts
The Husqvarna 3120XP paired with a 47-inch (120 cm) bar is a powerhouse built for extreme cutting. While it requires strength, skill, and proper maintenance, this chainsaw delivers unmatched performance for professional applications. Whether you’re felling massive trees, milling lumber, or cutting through the toughest hardwoods, this setup ensures efficiency, durability, and power. If you’re serious about heavy-duty cutting, the 3120XP is a worthy investment.
