1. Overview

A wood chipper, also known as a tree chipper, is a machine used for reducing wood (generally tree limbs, trunks, or branches) into smaller woodchips . These machines play an essential role in forestry operations, land clearing, biomass production, and residential yard waste management .

Wood chippers range from small, portable electric units for home use to massive industrial machines capable of processing whole trees up to 23 inches (56 cm) in diameter . They are typically powered by internal combustion engines (3 to 1,000+ horsepower) or electric motors .

2. How Wood Chippers Work

All wood chippers share common components: a hopper (feed chute), a collar (safety mechanism), a chipping mechanism (disc or drum with knives), and an optional collection bin for chips .

The basic process:

1. Material is fed into the hopper

2. Feed rollers (on larger models) grip and pull material toward the cutting mechanism

3. Knives mounted on a rotating disc or drum cut the wood into chips

4. Chips are ejected through a discharge chute into a truck, container, or onto the ground

Typical chip size ranges from 1–2 inches (2.5–5 cm) in length .

3. Types of Wood Chippers

3.1 By Cutting Mechanism

Disc vs. Drum Quality Comparison :

• Disc chippers produce uniform chips (consistent length and shape) because the knife angle of attack is constant (~37°)

• Drum chippers produce irregular chips because the angle of attack varies with wood diameter (34° at top, 79° at bottom)

3.2 By Power Source

3.3 By Application

4. Specifications (Representative Models)

Industrial Drum Chipper – Bruks Klöckner Next Generation DH 365

Industrial Drum Chipper – Dingli Series

Whole Tree Chipper – CBI ChipMax 364T

Electric Whole Tree Chipper – Peterson 5050H

5. Key Features by Machine Type

Industrial Chippers (Drum & Disc)

Whole Tree Processors

6. Chipper vs. Shredder vs. Mulcher

Understanding the differences is important for proper application :

Note: Some material should never go into a chipper, including metal, rocks, stones, lumber, bamboo, palm leaves, vines, and manure .

7. Applications

8. Key Buying Considerations

8.1 Capacity Requirements

8.2 Power Source Selection

8.3 Safety Features to Look For

8.4 Noise Considerations

• Gas chippers: ~110 decibels (louder than a chainsaw at 105 dB)

• Electric chippers: ~85 decibels

• Recommendation: Hearing protection (earmuffs or earplugs) required for prolonged use

9. Maintenance Requirements

Daily/Post-Use Maintenance

Knife Maintenance

• Rule: Every time knives are sharpened or replaced, the anvil must be readjusted for proper clearance

• Poor knife/anvil alignment reduces fuel economy, decreases production, and increases vibration (leading to accelerated wear)

Clearing Clogs

Critical safety step: Always disconnect spark plug (gas) or unplug (electric) before clearing clogs.

Basic clog removal steps:

1. Disconnect power source

2. Unlock and raise exit chute guard

3. Remove material from exit screen

4. Test functionality before reconnecting power

10. Leading Brands

11. Delivery & Service