The new mainframe design around which HD800 machines are built creates a slightly wider platform which, while still keeping the trimmer fully within the width of modern tractors, allows for a layout that improves service access. It incorporates a heavy-duty top link area, forklift shoes for easy out-of-season relocation, and a flip-down foot plus a relocated right-hand stand for improved stability when the trimmer is dismounted from the tractor. A toolbox is an integral feature, as is a hose/cable storage area.
Utilising axle brackets for maximum stability and strength, the design of the new models ensures they mount as closely as possible to the tractor but do not require removal of the lower link arms, making attachment faster and more convenient. All 800 series machines can be both axle and 3 point linkage mounted with no modifications to the mainframe required.
HD800 models benefit from a bigger slew cylinder for increased power and strength, and a greater slew angle, increased from 90 degrees to 103 degrees to allow the head to be moved further behind in line with the tractor for road travel. Slew pin size and slew cylinder bush quality have been upgraded to match, and there is an integral slew locking pin.
The heavy-duty pillar is common to all HD800 models, and is designed with an open base to prevent trash build-up, while there is now a stop bolt on both the bottom and the top of the pillar to reduce stress on the slew ram and improve pillar stability. A pivoting bump stop protects the cab, moving out of the way during work, while it’s now also easier to access the wear pads.
A larger lift cylinder provides greater lift capacity for a wider range of heavier heads. A head movement angle of 248 degrees is common to all machines in the range, courtesy of a larger head angle cylinder with 40mm pivot pins. Reach cylinder size has also been uprated.