Chain selection is one of the most critical factors in trenching performance. The wrong chain size can reduce efficiency, increase wear, and compromise trench quality.
The GeoTrencher system offers multiple chain configurations — 25mm, 38mm, and 58mm (including STIHL wide 58mm) — allowing operators to match trench width to specific applications, soil conditions, and installation requirements.
For professionals, this flexibility is what turns GeoTrencher into a multi-application trenching system rather than a single-purpose tool.
| Chain Type | Trench Width | Primary Use | Key Advantage |
| 25mm | Narrow | Precision Trenching | Minimal Disruption |
| 38mm | Medium | General Trenching | Versality |
| 58mm | Wide | Heavy Duty Trenching | Handles Tough Soil |
| Stihl 58mm Wide | Wide(Aggressive) | Heavy Duty + Root Cutting | Maximum Cutting Power |
⛓️ 25mm Chain – Precision & Clean Trenching
The 25mm chain is designed for accuracy and minimal surface disruption.
Best Used For:
- NBN and telco installation
- Garden lighting (12v systems)
- Tight access trenching
- Landscaping projects
Performance:
- Clean, narrow trench
- Minimal backfill required
- Ideal for finished surfaces
⛓️ 38mm Chain – The All-Rounder
The 25mm chain is designed for accuracy and minimal surface disruption.
Best Used For:
- NBN and telco installation
- Garden lighting (12v systems)
- Tight access trenching
- Landscaping projects
Performance:
- Clean, narrow trench
- Minimal backfill required
- Ideal for finished surfaces
⛓️ 38mm Chain – The All-Rounder
The 38mm chain is the most commonly used option across industries.
Best Used For:
- Irrigation and reticulation
- Plumbing and pipe laying
- Fencing and netting installation
- General trenching
Performance:
- Balanced trench width and speed
- Works in most soil conditions
- Most versatile option
This is the default chain for contractors.
⛓️ 58mm Chain – Standard Wide Trenching
The standard 58mm chain is suited for wider trenches and tougher conditions.
Best Used For:
- Drainage
- Larger pipe installations
- Compact soil
- Agricultural trenching
Performance:
- Wider trench for larger installs
- Increased cutting stability
- Suitable for heavier workloads
⛓️ STIHL 58mm Wide Chain – Maximum Cutting Power
The STIHL wide 58mm chain is designed for more aggressive trenching conditions, especially where standard chains begin to struggle.
Best Used For:
- Root-heavy ground
- Palm tree removal zones
- Hard and compact soil
- Erosion control and exclusion fencing
- Demanding agricultural applications
Performance:
- More aggressive cutting action
- Improved performance in dense material
- Better for continuous heavy-duty work
- Ideal for contractors dealing with varied ground conditions
This is the go-to option for high-resistance trenching environments.
Matching Chain Size to Job Requirements
Professional selection comes down to job type:
- Precision / cables / landscaping → 25mm
- General trenching / irrigation / fencing → 38mm
- Wider installs / drainage → 58mm
- Roots / compact soil / heavy-duty work → STIHL 58mm
Soil Conditions & Chain Performance
- Soft soil → 25mm or 38mm
- Compacted soil → 38mm or 58mm
- Root-heavy ground → STIHL 58mm (best)
- Finished landscapes → 25mm
Contractor Efficiency & ROI
Having multiple chain options allows operators to:
- Reduce job time
- Improve trench quality
- Minimize equipment strain
- Handle more job types with one system
The addition of the STIHL 58mm chain extends capability into heavier-duty and root-intensive work, increasing overall machine value.
The real advantage of the GeoTrencher system is not just trenching — it’s adaptability.
With the addition of the STIHL 58mm wide chain, operators can confidently handle:
- Precision landscaping
- General trenching
- Heavy-duty and root-intensive environments
