The CAT 320C long reach excavator with an 18-meter arm is a specialized machine designed for extended reach applications such as dredging, deep excavation, slope trimming, and demolition. Here are the key details about this configuration:
Key Features of CAT 320C with 18m Long Reach Arm
Extended Reach
The 18-meter (59-foot) long front allows digging and lifting at greater distances compared to standard excavators.
Ideal for deep trenches, riverbank work, and demolition where standard arms can't reach.
Engine & Performance
Powered by a CAT C6.6 ACERT turbocharged diesel engine (~115–125 HP).
Operating weight: ~22–25 tons (varies with configuration).
Hydraulic system optimized for smooth long-reach operation.
Stability & Counterweight
Requires additional counterweight (up to 3–4 tons extra) to balance the long arm.
Wider tracks or outriggers may be used for stability on soft ground.
Attachments
Compatible with long-reach buckets (narrower and lighter than standard buckets).
Can also use grapples, shears, or hydraulic hammers for demolition.
Applications
Dredging & Waterway Maintenance
Deep Excavation (e.g., ponds, foundations)
Demolition (high-reach buildings)
Slope Grading & Landscaping
Comparison to Standard CAT 320C
Feature Standard 320C 320C Long Reach (18m)
Dig Depth ~6–7m ~10–12m
Reach at Ground ~9–10m ~16–18m
Bucket Size 0.8–1.2 m³ 0.3–0.6 m³ (lighter)
Counterweight Standard Extra (3–4T)
Considerations Before Buying/Renting
Stability: Requires flat, firm ground; avoid steep slopes.
Lifting Capacity: Reduced at full extension (check load charts).
Maintenance: Long arms experience more stress; inspect pins/bushings regularly.
Alternatives
CAT 330 Long Reach (for heavier-duty needs)
Kobelco SK210LC-10 Long Reach (similar specs)
Volvo EC220E Long Reach
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