| General Data | | Manufacturer | Ammann | | Model | ARX 12 | | Machine type | Tandem Roller |
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| Weights and Measures | | Manufacturer weight | 1.460 kg | | Operative weight | 1.700 kg | | Drum width | 820 mm | | Shipping length | 2.330 mm | | Transport height | 1.730 mm | | Working height | 2.400 mm | | Working width | 865 mm | | Overall width | 950 mm |
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| Motorization | | Type | Yanmar 3TNV80F | | Fuel | diesel | | Construction type | 3-cylinder, liquid cooled | | Electric start | yes | | Exhaust emissions standard | Stage V | | Rated output (ISO 14396) | 14,6 kw at 2.400 rpm | | Torque | 68,4 Nm at 1.800 rpm | | Displacement | 1.267 cm³ | | Motor oil capacity | 3,6 l | | Fuel tank | 24 l | | Consumption | 2,6 l/h | | Hydraulic oil quantity | 28,5 l | | Sound pressure level (at the operator's ear) LPA | 87 db(A) | | Guaranteed sound power level LWA,g | 108 db(A) | | Measured sound power level LWA,m | 106 db(A) |
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| Work performance | | Stroke rate | 58 / 66 Hz | | Linear pressure | 8,4 / 9,4 kg/cm | | Stroke power | 23 kN | | Fuel | Hydrostatisch V+H | | Climbing power with vibration | 30 % | | Climbing power without vibration | 40 % | | Inside turning radius | 2.100 mm | | Driving speed | 8,5 km/h | | Hand-arm vibration | < 0,5 m/s² | | Water sprinkler system | 110 l |
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