Harvesting head

S172

Weight 1 675 kg 3,693 lbs.
Maximum cutting diameter 750 mm 29.5 in
Maximum delimbing diameter 500 mm 19.7 in

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Overview
Specifications
Service and support
Technology
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Dependable performance with large trees

Your business depends on your ability to productively harvest in large timber and challenging forests. Designed with power and reliability in mind, the S172 head matches extremely well with our 951 wheeled harvester, and also works with other brands.

Powerful two-motor and two-feed roller design
Rugged cast iron knives for durability
Robust butt saws deliver consistent production

Features and benefits

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Advanced feed system

Two feed motors and two driven feed rollers provide excellent pressure contact points to squeeze the stem. Flex Friction Control system utilizes advanced sensors and intelligence to ensure low friction without sacrificing delimbing quality.

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Rugged delimbing knife system

Three hydraulically controlled delimbing knives, a fourth moving vertical knife, and a fifth pre-delimbing knife deliver high performance. Cast iron knife construction ensures high durability.

Highly efficient cutting system

30 cm3 saw motor powers the rugged 32.5-in (825 mm) saw bar and chain. Automatic cut control, chain tensioning and chain oiling for efficient cutting all day long.

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Accurate length/diameter measuring systems

Patented length-measuring wheel cylinder design ensures constant pressure to closely follow stem irregularities and a find end photocell sensor provides excellent accuracy. Four-point diameter measuring system ensures superior diameter measurement.

MaxiXT smart control system

State-of-the-art control system with intuitive graphical interface to manage all aspects of head control and performance. Easy programming of individual operator control preferences plus production parameters such as tree species, length and diameter.

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Excellent reliability and serviceability

Computer and hydraulic hoses/tubes are well-protected for high reliability. All daily service can be performed at ground level without repositioning. Centralized lubrication points further reduce service time.

Specifications for S172

Full specifications

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US system Metric

Dimensions

Max width	1 937 mm
Height incl. rotator	2 222 mm
Height to vertical knife	1 748 mm
Opening knives, upper	757 mm
Opening knives, lower	772 mm
Roller opening, max	713 mm

Max width	76.3 in
Height incl. rotator	87.5 in
Height to vertical knife	68.8 in
Opening knives, upper	29.8 in
Opening knives, lower	30.4 in
Roller opening, max	28.1 in

Specifications

Weight	Dry weight from 1 675 kg
Feed speed	0 - 5 m/s
Gross feed force	40.2 kN
Feed wheel type	Steel rollers
Delimbing knives, number	4
Delimbing knives, opening	500 mm
Bar	90 cm
Saw motor	19/30 cm³/rev
Fell/Cut diam. theor. max	750 mm
Max hydraulic flow	300 L/min
Max hydraulic pressure	28 MPa

Weight	Dry weight from 3,693 lbs.
Feed speed	0 - 16.4 ft./s
Gross feed force	9,037 lbf.
Feed wheel type	Steel rollers
Delimbing knives, number	4
Delimbing knives, opening	19.7 in
Bar	35.4 in
Saw motor	7.48 / 11.8 in³/rev
Fell/Cut diam. theor. max	29.5 in
Max hydraulic flow	79 gpm
Max hydraulic pressure	4,061 psi

Notes

Standard and extra equipment are market-dependent and vary between countries. The specification describes possible equipment, not that which is standard or optional. Stated weights are based on standard equipment. Specifications and designs are subject to change without notice.

Support you can count on

Technology that works as hard as you do

MaxiXT smart control system

The MaxiXT smart control system is designed to enable fast, accurate execution of even the narrowest of cutting windows. The power of the knives, feed rollers and tilt down function are determined by stem diameter and tree species, and are easily adjusted using a graph. This helps optimize your productivity, measurement accuracy and time savings.