Technical specification of agricultural tractor Zetor 4911/4945/5911/5945/6911/6945 :
| Model | Zetor 4911/4945 | Zetor 5911/5945 | Zetor 6911/6945 |
| Years of production | 77-80 | 77-80 | 77-80 |
| Engine model / type | Z 4901 | Z 5901 | Z 6901 |
| Number of cylinders / turbocharging | 3 | 4 | 4 |
| Engine displacement (cm3) | 2696 | 3456 | 3595 |
| Piston dimension / stroke (mm) | 102×110 | 100×110 | 102×110 |
| Maximum engine power (hp) / rpm | 45/2200 | 58/2200 | 65/2200 |
| Torque (Nm) / rpm | 142/1450 | 180/1650 | 205/1500 |
| Number of gears (front + rear) | 10+2 | 10+2 | 10+2 |
| Number of synchronized gears (front+rear) | 4 | 4 | – |
| Speed-Shift | – | – | – |
| Type of reverse | – | – | – |
| Driving speed (km/h) | 1,1-25,7 | 1,1-24,7 | 1,1-24,7 |
| Max Driving speed (km/h) | 27 | 26 | 26 |
| Hydraulic pump capacity (L/min) | 20 | 20 | 20 |
| 3-Point Hitch control | mech | mech | mech |
| 3-point hitch max load (kg) | 1350 | 1750 | 1750 |
| PTO speed (rpm) | 540/1000 | 540/1000 | 540/1000 |
| Disc brake type (dry / wet) | – | – | – |
| Type of control of the braking system | mech | – | – |
| Turning radius 2WD (m) | – | – | – |
| Turning radius 4WD (m) | – | – | – |
| Front wheel 2WD | 7,50-16 | 7,50-16 | 7,50-16 |
| Front wheel 4WD | 11,2-24 | 11,2-24 | – |
| Rear wheel 2WD | 12,4-36 | 12,4-36 | 12,4-36 |
| Rear wheel 4WD | 16,9-30 | 16,9-30 | – |
| 2WD total weight (kg) | 2580 | 2950 | 2950 |
| 4WD total weight (kg) | 3380 | 3380 | – |
| Total height with cabin (cm) | – | – | – |
| Total length (cm) | 338 | 372 | 372 |
| Total width (cm) | 198 | 225/226 | 225/226 |
| Fuel tank capacity (l) | 55 | 67 | 67 |
| Cabin sound level (dB) | 87 | 86 | 85,5 |
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The history of the Czech brand Zetor began immediately after the Second World War, in 1946. That year the Brno-based company was established, and at the same time the first Zetor model, model number 25, was manufactured. In less than a year, Zetor manufactured around 3400 Zetor 25 models. Farmers value Zetor tractors for their quality/price ratio.
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