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895 kg | 1,973 lbs

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

250 bar | 3,625 psi

Rotator Pressure

519 mm | 20.4 in

Cutting Capacity

573 mm | 22.6 in

Maximum Opening Diameter

Log Max heads are designed for installation on various types of carriers. For this reason, low weight is essential in our state-of-the-art design, given the fact that the CTL-method mostly uses wheeled pulling force to weight ratio.


Standard Configuration

Weight 895 kg 1,973 lbs
Height 148.3 cm 58.4″
Maximum Width (With Head Open) 137.1 cm 54.0″
Maximum Width (With Head Closed) 105.9 cm 41.7″
Degree of Rotation N/A

Number of Drive Rollers 2
Motor Size (Drive Arm) N/A N/A
Motor Size (Variable Displacement) N/A N/A
Motor Size (Fixed Center Drive) N/A N/A
Maximum Drive Roller Opening (Diameter) 519 mm 20.4″
Maximum Drive Roller Closing (Diameter) 18 mm 0.7″
Feed Speed 4.1 mps | 3.5 mps 13.5 fps | 11.5 fps

Number of Delimb Arms 3
Maximum Delimb Opening 573 mm 22.6″
Maximum Delimb Full Coverage 415 mm 16.3″
Minimum Delimb Closing (Diameter) 30 mm 1.2″

Saw Type 98XL
Maximum Cut (Diameter) 57 cm | 63 cm 22.4″ | 24.8″
Bar Size 64 cm | 75 cm 25.2″ | 29.5″
Chain Pitch 0.404 mm
Motor Size 19 cc 1.16 in3
Chain Auto Tension No
Oil Tank Capacity 20 L 5.3 gal

Carrier Size (Tracked) 16 – 21 ton
Carrier Size (Wheeled) 15 – 20 ton
Maximum Pressure 250 bar 3,625 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″