The Howard HD range of Rotaslashers is built for 100HP tractors, with
the same cutting gear and gearbox spindle diameter as the EHD.
The Howard HD Series gearbox is strengthened at the working end and
has the same spindle diameter and the same bearing and seals as used
on the EHD spindle. Like the EHD, the HD gerabox is warranted for
two years, as are the spring steel, laminated blade beams, with their
stress reducing, 'tear drop' blade fastener holes.
The drop forged,
heat treated, 'lift' blades swing on extra hard, cold forged bushes
and are secured with the exclusive Howard blade bolt and nut.
The HD300 is a
twin head version of the HD Rotaslasher. It is equipped with two HD
gearboxes driven, via a splitter gearbox, through Howard sintered
bronze clutches. The blade beams are vertically offset at the overlap
point so blades cannot clash. This allows the clutch on each box to
slip under shock load, obviating any transmission damage.
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HD
Rotaslasher General Specifications:
Bodies:
Bodies are manufactured from 5mm, hot dip galvanised steel plate,
strongly reinforced with full length gussets. Adjustable skids and
a swinging headstock, supported by chain backstays, are fitted as
standard.
Mounting:
Cat 1 and 2 bottom clevis pins at Cat 1 centres. HD models are centrally
mounted, except for the HD150 model which is offset 18cm to the left.
Drive Shaft:
BYPY 107 series tri-lobal drive shafts (uni-cross 35x94mm) are used
on the HD150, hd180 and as cross shafts on the HD300. The drive shaft
on the HD300 is a tri-lobal BYPY 108 series (uni-cross 35x107mm).
Clutch:
A Howard sintered bronze, two-plate clutch is fitted to the slasher
end of the drive shaft.
Gearbox:
The Howard designed and built, fabricated steel 100 HP HD gearbox
is fitted with machine cut hardened alloy steel gears and taper roller
bearings throughout. The combined spindle, output shaft and blade
beam mounting flange is precision machined from a single drop forging.
A double oil seal system, backed up by a felt seal and a dust cover,
is used to protect the spindle bearings. The HD gearbox ration is
1:1.81. On the HD300, the Comer splitter box ratio is 1:1.
Blade
Beam:
Multi-leaf, spring steel blade beam with tear-drop, stress reduced
blade fastener holes.
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Blades:
Drop forged, heat treated step-down blades swinging on extra hard,
cold forged bushes. The HD300 model uses stepped bi-directional blades.
Options:
Single, laminated rubber, puncture proof height control wheel. (Twin
wheels are standard on HD300).
Front and rear safety guards. (Note: Rear guards cannot be fitted
to the HD180 is a single wheel is also fitted).
| Model |
Recommended
Power @ 540 rpm PTO Speed |
Cutting
Height
|
Cutting
Width |
Machine
Weight |
Blade
Tip Speed |
|
Minimum |
Maximum |
|
|
|
|
| HD 150 |
29kW (39hp) |
80kW(107hp) |
0 - 75mm
on skids
0 - 11cm on wheels
|
1.52m (5ft) |
360kg |
78m/sec
(15350 ft/min)
|
| HD 180 |
36kW (48hp) |
80kW(107hp) |
0 -75mm on
skids
0 - 11cm on wheels
|
1.83m (6ft) |
440kg |
94m/sec
(18420 ft/min) |
| HD 300 |
60kW(80hp) |
120kW(161hp) |
0 - 11cm
on wheels |
3.00m (10ft)
|
820 kg |
78m/sec
(15350 ft/min) |
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For more information contact BC Machinery
Phone: 08 89721988
Email: sales@bcmachinery.com.au
