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| CUTTING UNITS |
The hydraulic milling cutters of the ETH series can be mounted to an excavator in lieu of the bucket. The ETH is driven by a hydraulic motor which is powered by the hydraulic system of the excavator. Applications include tunneling, mining, quarries, roadway construction, demolition, forestry, and marine use. |
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The hydraulic milling cutter is suited for cutting rock, concrete, asphalt, industrial minerals, masonry and other similar materials. Examples of uses in various industries include:
Tunneling and Mining: Heading; profiling; restoration; ripping; and mineral extraction
Civil Engineering: Trench milling (down to 27.5 inches); foundation milling; cellar excavation
Road Construction: Asphalt cutting
Demolition: Well controlled, partial demolition while safeguarding the remainder of the building
Hydraulic Engineering: Lowering of navigable water ways; milling of trenches for pile planking; milling of culverts in river beds
Low noise operation: In all applications where other excavating equipment (i.e. hydraulic hammers) is too noisy
There are three versions of ETH milling cutters designed to suit a wide variety of needs. A table of the general specifications follows. |
SPECIFICATION |
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ETH 30 |
ETH 50 |
ETH 200 |
Excavator class (Min.) |
Lb. |
45,000 |
65,000 |
130,000 |
Power of the ETH |
HP (kW) |
135 (100) |
200 (150) |
360 (270) |
Operating Pressure |
psi (bar) |
4,350 (290) |
4,350 (290) |
4,350 (290) |
Oil flow rate |
gpm |
53 - 66 |
80 - 120 |
143 – 198 |
Cutting head rpm |
rpm |
75 - 95 |
60 - 90 |
52 – 72 |
Bit tip speed |
fpm |
510 – 650 |
450 – 675 |
590 – 820 |
Output torque (max.) |
Ft-lb (N-m) |
9,600 |
16,960 |
36,875 |
Cutting force |
lb |
9,000 |
13,500 |
20,000 |
Weight (approx.) |
Lb (kg) |
3,800 (1,727) |
6,100 (2,772) |
16,800 (7,636) |
Bits - picks |
Quantity |
60 |
76 |
152 |
Cutting head diameter over bit tips |
In. (mm) |
26.375 (670) |
29.5 (750) |
43.375 (1101) |
Cutting head width |
In. (mm) |
48 (1219) |
59 (1499) |
78 (1981) |
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