John Deere 770
Rotary Harvesting Heads 770
Overview:
The 770 Rotary Harvesting Unit features four large drum units and one small drum located on the outside of the left-hand and right-hand sides of the machine. Small drums were put on the outside of the harvesting unit to better handle low-tonnage requirements. Big drums handle high tonnages of crop better than small drums.
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Features
- Large drum cutting enables cutting of fields
- Harvesting down or lodged crops
- Advanced header-height control
- Row scrapers and cleaners prevent crop buildup
Specifications
| Manufacturer | John Deere |
| Model | 770 Rotary Harvesting Unit |
| Rotary harvesting unit | |
| Length | 3.5 m (11.5 ft) |
| Overall width | 7.6 m (24.9 ft) |
| Height | 2.4 m (7.9 ft) |
| Transport height | 3.2 m (10.6 ft) |
| Operating width | 7.5 m (24.6 ft) |
| Transport width | 3.3 m (10.8 ft) |
| Weight | 3,340 kg (7,363 lb) |
| Revolution rating calculated with forage harvester at a standstill without load | |
| Engine rpm | 2,100 rpm |
| Header drive shaft (shift rod pulled out for slow speed) | 405 rpm |
| Gathering drum | --- |
| Large | 22 rpm |
| Small | 47 rpm |
| Cutting blades for gathering drum | --- |
| Large | 640 rpm |
| Small | 1,190 rpm |
| Feed drums | --- |
| Cross feed drums | --- |