Technical specifications of the agricultural tractor Landini 6550/7550/8550:
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| Model | Landini 6550 | Landini 7550 | Landini 8550 |
| Years of production | 78-87 | 78-87 | 78-87 |
| Engine model / type | Perkins A4.236 | Perkins a4.236 | Perkins A4.248 |
| Number of cylinders / turbocharging | 4 | 4 | 4 |
| Engine displacement (cm3) | 3865 | 3865 | 4065 |
| Piston dimension / stroke (mm) | 98,42×127 | 98,42×127 | 100,9×127 |
| Maximum engine power (hp) / rpm | 65/2200 | 70/2200 | 80/2200 |
| Torque (Nm) / rpm | 256/1400 | 268/1200 | 286/1400 |
| Number of gears (front + rear) | 12+4 | 12+4 | 12+4 |
| Number of synchronized gears (front+rear) | 12+4 | 12+4 | 12+4 |
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| Speed-Shift | – | – | – |
| Type of reverse | mech | mech | mech |
| Driving speed (km/h) | 1,3-24,0 | 1,3-24,7 | 1,3-24,7 |
| Max Driving speed (km/h) | – | – | – |
| Hydraulic pump capacity (L/min) | 26,5 | 26,5 | 26,5 |
| 3-Point Hitch control | mech | mech | mech |
| 3-point hitch max load (kg) | 2380 | 2380 | 2540 |
| PTO speed (rpm) | 540/1000 | 540/1000 | 540/1000 |
| Disc brake type (dry / wet) | – | – | – |
| Type of control of the braking system | hydr | hydr | hydr |
| Turning radius 2WD (m) | – | – | – |
| Turning radius 4WD (m) | – | – | – |
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| Front wheel 2WD | 7,50-16 | 7,50-20 | 7,50-20 |
| Front wheel 4WD | 11,2-24 | 12,4-24 | 12,4-24 |
| Rear wheel 2WD | 12,4-36 | 13,6-38 | 13,6-38 |
| Rear wheel 4WD | 12,4-36 | 13,6-38 | 13,6-38 |
| 2WD total weight (kg) | 3050 | 3128 | 3250 |
| 4WD total weight (kg) | 3215 | 3350 | 3580 |
| Total height with cabin (cm) | 247 | 272 | 272 |
| Total length (cm) | 396 | 399/404 | 399/404 |
| Total width (cm) | 243/237 | 246/240 | 246/240 |
| Fuel tank capacity (l) | 100 | 120 | 120 |
| Cabin sound level (dB) | 85 | 85 | 85 |
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