The SR20-3 is a super heavy class roller that is a self-propelled, fully hydraulic, vibratory roller. It features full hydraulic double drive, three-gear CVT, hydraulic vibration and steering, double frequency and amplitude.
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The SR20-3 is a super heavy class roller that is a self-propelled, fully hydraulic, vibratory roller. It features full hydraulic double drive, three-gear CVT, hydraulic vibration and steering, double frequency and amplitude.
Weights | Operating weight | 20000 kg |
| Axle load, drum | 13000 kg | |
| Axle load, wheel | 7000 kg | |
| Static linear load (at drum) | 590/631 N/cm | |
Drum and tires | Maximum working width | 2140 mm |
| Drum diameter | 1550 mm | |
| Drum shell thickness | 40 mm | |
| Number of padfeet | — | |
| Height of the padfoot | — | |
| Tire size | 23.1-26-12PR | |
Frequency | High amplitude | 29 Hz |
| Low amplitude | 35 Hz | |
Nominal amplitude | High | 2.0 mm |
| Low | 1.0 mm | |
Centrifugal force | Maximum | 380 kN |
| Minimum | 275 kN | |
Forward Speed | I | 0~4.8 km/h |
| II | 0~6.0 km/h | |
| III | 0~7.9 km/h | |
| IV | 0~12.0 km/h | |
Reverse Speed | I | 0~4.8 km/h |
| II | 0~6.0 km/h | |
| III | 0~7.9 km/h | |
| IV | 0~12 km/h | |
| Maximum climbing ability | 48% | |
| Drive system | Hydrostatic | |
| Make & model Shangchai | SC8DK190.G3 | |
| Type | Turbocharged | |
| Fuel | Diesel | |
| Fuel capacity | 300 L | |
| Cool | Water | |
| Number of cylimder | 6 | |
| Rated power | 140 kW | |
| Rated speed | 2200 rpm | |
Electrical system | DC, negative ground | 24 V |
| Alternator | 28 V, 70 A | |
| Brakes | Service brake | Hydrostatic |
Steering | Steering system | Oscillating, articulating |
| Steering method | Hydrostatic | |