Zero Tail Swing Excavator

Product Overview

A Zero Tail Swing Excavator is a compact hydraulic excavator designed so that the rear of the upper structure remains within, or essentially within, the width of the crawler tracks while the machine swings. This allows the excavator to operate close to walls, buildings, roads, pipelines and other obstacles where a conventional excavator would have limited clearance. Kubota specifically describes its zero-tail-swing design as keeping the tail within the track width during slewing.

It is particularly suitable for urban construction, utility work, trenching, pipeline projects, landscaping, road maintenance and confined oil & gas sites.

Technical Specifications

• Parameter Typical / Reference Specification
• Equipment Type Zero Tail Swing Hydraulic Excavator
• Configuration Crawler-mounted
• Operating Weight Approx. 1–6 tonnes for common compact models
• Engine Diesel
• Engine Power Approx. 10–60 hp, depending on model
• Drive System Hydraulic crawler drive
• Tail Swing Zero/within track width
• Hydraulic System Open-center or load-sensing, model dependent
• Bucket Capacity Approx. 0.02–0.20 m³
• Digging Depth Approx. 1.8–4.0 m
• Maximum Reach Approx. 3.3–6.0 m
• Swing System Hydraulic swing motor
• Boom Hydraulic
• Arm/Stick Hydraulic
• Undercarriage Steel or rubber tracks
• Blade Hydraulic dozer blade
• Operator Protection ROPS/TOPS/FOPS depending on configuration
• Auxiliary Hydraulics Available for attachments
• Travel Speed Typically approximately 2–5 km/h
• Applications Excavation, trenching, utilities, construction and confined-area work

These are general ranges; the actual specification depends heavily on the machine's make, model and configuration.

Reference Examples

Kubota U10-3

• Operating weight: 1,055 kg
• Engine output: 10.3 hp
• Bucket capacity: 0.022 m³
• Maximum digging depth: 1,800 mm
• Maximum digging radius: 3,380 mm
• Zero-tail-swing turning radius: approximately 500 mm.

Cat 302 CR

• Digging depth: 2,370 mm with standard stick
• Maximum ground-level reach: 4,040 mm
• Maximum digging height: 3,550 mm
• Tail swing: 750 mm
• Retracted track width: 1,090 mm
• Expandable track width: 1,400 mm
• Boom swing: 50° right / 65° left.

Major Components

1. Diesel Engine – Supplies power to the hydraulic and travel systems.
2. Hydraulic Pump – Generates hydraulic flow and pressure.
3. Hydraulic Main Valve – Directs hydraulic flow to the various actuators.
4. Boom Cylinder – Raises and lowers the boom.
5. Arm/Stick Cylinder – Controls arm movement.
6. Bucket Cylinder – Operates the bucket.
7. Hydraulic Swing Motor – Rotates the upper structure.
8. Travel Motors – Drive the crawler tracks.
9. Crawler Undercarriage – Provides stability and mobility.
10. Dozer Blade – Supports grading, backfilling and machine stabilization.
11. Operator Cab/Canopy – Provides operator protection and controls.
12. Auxiliary Hydraulic Circuit – Allows use of breakers, augers, compactors and other attachments.

ZERO TAIL SWING EXCAVATOR — FOR SALE & LEASE

Compact, maneuverable hydraulic excavator designed for excavation, trenching, utility installation, pipeline work and construction activities in confined operating environments. Its zero-tail-swing architecture provides improved clearance around buildings, roads, structures and other obstacles.