The Kaiser Systems S1 is a compact excavator engineered for demanding industrial and construction environments. Built on a hydrostatic drive platform with dual-speed transmission and telescopic leg stabilization, it delivers precise digging, lifting, and material handling across confined work sites. The machine combines a 70 kW Perkins diesel engine with a load-sensing hydraulic system featuring three independent circuits, enabling synchronized multi-function operation with hydraulic end-position damping. ROPS/FOPS certification and a fully enclosed cabin with excellent visibility ensure operator safety on dynamic job sites.
## Technical Specifications
**Engine & Power**
• Perkins diesel, 70 kW (95 HP)
• Liquid-cooled design
• Fuel capacity: 100 L (58.7 US gal)
**Hydraulic System**
• Load-sensing control with proportional valve response
• Three independent circuits: 164 l/min, 65 l/min, 51 l/min
• Cylinders with integrated end-position damping
• 4-circuit cooling system (hydraulic oil, coolant, fuel, air conditioning)
• Optional hydraulic connection for grapple bucket attachment
**Drive & Mobility**
• Hydrostatic transmission, 2-speed: 0–4 km/h (Range 1); 0–8 km/h (Range 2)
• Continuously extendable telescopic stabilizer legs, 850 mm stroke
• Hydraulic disk brakes with pressure relief
**Performance (S1-5 Model)**
• Operating weight: 7.5 t
• Max horizontal reach: 8.18 m
• Max dig depth (mono boom): 4.57 m
• Max dig height (mono boom): 8.18 m
• Slewing radius: 2.08 m
• Slew speed: 0–9 rpm
• Break-out force: 54 kN
• Tensile strength: 43 kN
• Lifting capacity at 3.05 m: 8,377.5 lb; at 5.08 m: 3,527.4 lb
**Cabin & Safety**
• ROPS/FOPS certified enclosure
• Multi-adjustable air-suspension seat
• 360° visibility design
• Sound pressure: 75 dB(A); Sound intensity: 99 dB(A)
## Key Features
• Multi-circuit hydraulic damping eliminates shock loads during end-of-stroke operations
• Dual-speed transmission for precision positioning and travel efficiency
• Integrated four-circuit cooling maintains optimal operating temperatures across all systems
• Quick-coupler compatibility for rapid bucket and tool changeover
## Typical Applications
Excavation, material handling, utility work, confined-space trenching, and demolition in urban and industrial settings.
## Compatibility & Integration
Optional winch (proportional), auto-lubrication system, particle filtration, micro-filtration with water absorption, ditching bucket with hydraulic tilt, and stone grapple bucket.
