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1,889 kg | 4,165 lbs

Weight (without rotator, link, or multi-tree handling)

300 bar | 4,351 psi

Rotator Pressure

713 mm | 28.07 in

Cutting Capacity

769 mm | 30.03 in

Maximum Opening Diameter

The all new Log Max 7000-Twin, following the success of the 6000-Twin, is a new heavy-duty head specifically engineered for low branched trees.


Standard Configuration

Weight 1,889 kg 4,165 lbs
Height 196.7 cm 77.4″
Maximum Width (With Head Open) 193.7 cm 76.3″
Maximum Width (With Head Closed) 131.5 cm 51.8″
Degree of Rotation N/A

Number of Drive Rollers 2
Motor Size (Drive Arm) 1,147 cc 69.99 in3
Motor Size (Variable Displacement) 660 – 1,320 cc 40.2 – 80.55 in3
Motor Size (Fixed Center Drive) N/A N/A
Maximum Drive Roller Opening (Diameter) 713 mm 28.07″
Maximum Drive Roller Closing (Diameter) 13 mm
Feed Speed 5.3 mps 17.4 fps

Number of Delimb Arms 4
Maximum Delimb Opening 769 mm 30.3″
Maximum Delimb Full Coverage 526 mm 20.7″
Minimum Delimb Closing (Diameter) 60 mm 2.4″

Saw Type 98XL
Maximum Cut (Diameter) 65 cm | 72 cm 25.6″ | 28.4″
Bar Size 75 cm | 82 cm 29.5″ | 32.3″
Chain Pitch 0.404 mm
Motor Size 19 cc 1.16 in3
Chain Auto Tension No
Oil Tank Capacity 42 L 11.1 gal

Carrier Size (Tracked) 21 – 30 ton
Carrier Size (Wheeled) 18 – 25 ton
Maximum Pressure 300 bar 4,351 psi

Model Log Mate 510
Optional Additions Yes
Full Optimization Optional
Electronic Calipers (For Electronic Calibrations) Optional
Degree of Rotation N/A

The QB4400 Fixed Felling Head is a multi-functional felling attachment designed to fall, bunch, shovel, and load. Its high torque continuous rotation system, and grapple type arm design fundamentals, allow for highly controlled felling or large high value hard and softwood, providing increased value recovery.


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it’s all in the details

As a true visionary and pioneer in the forestry industry, we embrace quality craftsmanship.

bar saw models

With the ability to handle up to 32” in a single cut, Quadco Bar Saws are ready to tackle your large timber with finesse.

“Stop and go” versatility means the bar saw is retracted after the cut, safely readying the head for your delimbing, topping, and trimming needs.

Our Bar Saw’s arms are extremely durable, feature one cylinder per arm, and are made of cast-iron steel for easy grabbing and accumulating.

bar saw models qb2500 qb3200 qb3500 qb4400
Cutting Capacity 25″ 32″ 34″ 39″