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Siirry sivupalkkiinSiirry alaosaanMassey Ferguson 7250-7256




Here is the English translation of the provided text:
In the Danish 7200-series MF combine harvesters introduced in the autumn of 1999, there were very few technical differences compared to the earlier 30-series machines, even though the design of the panels was more robust. Even the grain tank capacities remained the same. The engines had been replaced with newer SisuDiesels, which, in addition to the rated power indicated in the table, had an extra 23-35 horsepower. Except for the 7250 model, the engines were intercooled.
In the 5-rattle threshing drum model range, the width of the threshing mechanism was 140 cm, and as with its predecessors, the two smallest models had a threshing cylinder diameter of 45 cm. The others were 60 cm in size, and the post-threshing device was standard. Except for the 7250, a rotating separation cylinder was available in front of the rattles, and the header was available in a tilting version. The Powerflow header, extended with a belt conveyor, was also still available.
A major structural innovation was that, instead of a "combine harvester" frame serving as the supporting structure, the machine had a truck-like chassis to which components were bolted. From model 7254 and upwards, the hydraulic double pump was replaced by a triple pump, ensuring faster operations. The cab underwent only minor changes to the controls. Gear shifts were made with push-buttons under the steering wheel. The Datavision II monitoring system remained unchanged and could be supplemented with yield measurement and precision farming functions (Fieldstar).
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| Model | MF 7250 | MF 7252 | MF 7254 | MF 7256 |
|---|---|---|---|---|
| Imported to Finland | No | No | No | No |
| Years | 1999-2002 | 1999-2003 | 1999-2003 | 1999-2003 |
| Engine | SisuDiesel | SisuDiesel | SisuDiesel | SisuDiesel |
| Engine type | 620DSEL | 620DSIEL | 634DSBIEL | 634DSBIEL |
| Displacement | 6600 cm³ | 6600 cm³ | 7400 cm³ | 7400 cm³ |
| Cyl/turbo | 6T | 6TI | 6TI | 6TI |
| Power | 165 hp DIN | 180 hp DIN | 200 hp DIN | 230 hp DIN |
| Fuel tank | 400 l | 400 l | 600 l | 600 l |
| Transmission | hydr. | hydr. | hydr. | hydr. |
| Gears | 3 | 3 | 3 | 3 |
| Speed min-max. | 0-24,4 km/h | 0-24,4 km/h | 0-24,4 km/h | 0-26,5 km/h |
| Cutting width | 500 cm | 500 cm | 560 cm | 620 cm |
| Cutting width, alternative | 372, 430 cm | 372-620 cm | 372-620 cm | 372-680 cm |
| Threshing cyl. diameter | 45 cm | 45 cm | 60 cm | 60 cm |
| Threshing cyl. width | 140 cm | 140 cm | 140 cm | 140 cm |
| Number of straw walkers | 5 | 5 | 5 | 5 |
| Area of walkers | 630 dm² | 630 dm² | 640 dm² | 640 dm² |
| Lenght of walkers | 440 cm | 440 cm | 440 cm | 440 cm |
| Straw shieve | 260 dm² | 260 dm² | 260 dm² | 260 dm² |
| Bottom shieve | 190 dm² | 190 dm² | 190 dm² | 190 dm² |
| Total screening area | 450 | 450 | 450 | 450 |
| Overall lenght | 957 cm | 957 cm | 987 cm | 987 cm |
| Width without header | 337 cm | 337 cm | 340 cm | 340 cm |
| Height with cabin | 392 cm | 393 cm | 400 cm | 400 cm |
| Weight with cabin | 10960 kg | 10960 kg | 14180 kg | 14330 kg |
| Weight without header | 9660 kg | 9660 kg | 12780 kg | 12780 kg |
| Grain tank | 52 hl | 62 hl | 66 hl | 80 hl |
| Unl. height | 385 cm | 385 cm | 417 cm | 417 cm |
| Tyres front (Finland) | 620/75R26 | 750/65R26 | 800/65R32 | 800/65R32 |
| Tyres front, alternative | 750/65R26 | 620/75R26 | 650/75R32 | 73×44-32 |
| Tyres rear (Finland) | 12.5/80-18 | 15.0/70-18 | 15.5/80-24 | 500/60-26.5 |
| Tyres rear, alternative | 15.0/70-18 | - | 600/55-26.5 | 600/55-26.5 |
| Reel forward/backw. adjustment | hydr. | hydr. | hydr. | hydr. |
| Reel speed adjustment | hydr. | hydr. | hydr. | hydr. |
| Threshing cyl. speed adjustment | elec. | elec. | elec. | elec. |
| Bottom sieve | adj. | adj. | adj. | adj. |
| Brakes | wet disc | wet disc | wet disc | wet disc |
| Reverser | x | x | x | x |
| Air conditioning | x | x | x | x |
| Heating | x | x | x | x |
| Floating cutting platform | x | x | x | x |
| Type of cutting platform floating | gas damper | gas damper | gas damper | gas damper |
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