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Forestry
S172-1
Harvester heads
- Weight (kg) 1 675
- Weight (lbs) 3693
- Maximum cutting diameter (in) 29.5
- Maximum cutting diameter (mm) 750
- Head opening (in) 28.1
- Head opening (mm) 713
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Contact a sales representativeReliable power for large trees
The Komatsu S172 is a strong and productive head, purpose-built for large-diameter trees. With its robust design and advanced features, it provides dependable performance even in the toughest conditions.
- Powerful design for large-diameter trees
- High traction combined with Flex Friction Control ensures efficient feeding of the stems
- Long service life and minimal downtime thanks to smart design
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Features and benefits
Designed for heavy-duty tasks
Equipped with three hydraulically operated delimbing knives and a movable top knife, this head handles large-diameter stems with ease. Its robust construction and powerful performance make it a dependable choice for final felling in tough environments.
Tailored to your needs
A wide range of customisation options – from feed roller types to colour marking and four-point measuring – allows for precise adaptation to your working conditions. The hydraulically controlled top knife with manual override simplifies processing crooked stems and thick branches.
Simple, proven design
Built for durability, the cast feed roller arms ensure long service life. Smart hose routing and well-protected components help minimise downtime and enhance reliability in demanding operations.
Efficient feeding with Flex Friction Control
The two-wheel feed system optimises feeding for large stems, while Flex Friction Control keeps each stem in the ideal position. The result is powerful feeding, smooth operation, and excellent delimbing performance.
Power for demanding conditions
For forests with large trees and tough cutting conditions, an optional 30cc high-torque saw motor delivers the extra power needed. This upgrade ensures efficient cutting and sustained productivity, even when handling thick stems.
Service made simple
Maintenance is streamlined through an accessible design and automatic chain tensioning, which reduces wear and extends the saw unit’s lifespan. These features help maximise uptime and keep performance consistently high.
Specifications
- Full specs
- Max width (in): 76.3
- Max width (mm): 1 937
- Height including rotator (mm): 2 222
- Height including rotator (in): 87.5
- Roller opening, max (in): 28.1
- Height to vertical knife (mm): 1 748
- Roller opening, max (mm): 713
- Height to vertical knife (in): 68.8
- Opening knives, lower (in): 30.4
- Opening knives, lower (mm): 772
- Opening knives, upper (in): 29.8
- Opening knives, upper (mm): 757
- Maximum delimbing diameter (in): 19.7
- Maximum delimbing diameter (mm): 500
- Weight (lbs): 3693
- Weight (kg): 1 675
- Feed speed (m/s): 0 - 5
- Feed speed (ft/s): 0 - 16.4
- Gross feed force (kN): 40.2
- Gross feed force (lbf): 9037
- Feed wheel type: Steel rollers
- Delimbing knives, number: 4
- Delimbing knives, opening (mm): 500
- Delimbing knives, opening (in): 19.7
- Bar (option)(in): 35.4
- Bar (option)(cm): 90
- Saw motor (in^3/rev): 7.48 / 11.8
- Saw motor (cm^3/rev): 19 / 30
- Fell/Cut diam. theor. max (mm): 750
- Fell/Cut diam. theor. max (in): 29.5
- Max hydraulic flow (L/min): 300
- Max hydraulic flow (gpm): 79
- Max hydraulic pressure (psi): 4061
- Max hydraulic pressure (MPa): 28
- 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.
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