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Continuous Miners
Product Line
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Cutting-Edge Productivity
Caterpillar has a seamless range of continuous miners covering both soft- and hard-cutting applications
in any seam thickness. The range includes machines capable of operating in seams from 0.76 m (30 in) to
4.70 m (15.4 ft).
Top Performance Underground
As the result of an all-out engineering effort, this
complete range of miners is on the very cutting edge
of underground mining technology.
As part of our complete range of Room & Pillar
equipment, our continuous miners are based on operating
experience in coal elds worldwide and incorporate the
latest engineering ndings and innovations. This expertise
– combined with modular design and a large number of
common components – means that all Cat® continuous
miners offer superior performance and productivity
combined with high availability and low maintenance;
resulting in higher production, lower maintenance cost per
tonne and, as a result, lower total cost of ownership.
Features
All Cat continuous miners offer:
• Heavy main frame for rigidity and stability
• Independent tramming for maneuverability
• Wide conveyor for maximum loading rates
• Wide crawlers for maximum penetration and
low ground pressure
• Radio remote with self diagnostics available
• Easy access and low maintenance
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CM200 Series
For thin- to mid-seams we have the CM200 Series – from the thinseam CM210 with a minimum cutting height of 0.76 m (30 in) to the
mid-seam CM240 for seams of up to 3.4 m (134 in).
MODEL MINING RANGE WEIGHT TOTAL POWER
CM210
CM220
CM230
CM235
CM240
0.71-1.52 m
28-60 in
0.86 – 2.39 m
34 – 94 in
1.12 – 2.90 m
44 – 114 in
0.86 – 3.25 m
34 – 128 in
1.22 – 3.91 m
48 – 154 in
47.60 tonnes
105,000 lbs
52.2 tonnes
115,000 lbs
56.7 tonnes
125,000 lbs
61.3 tonnes
135,000 lbs
61.3 tonnes
135,000 lbs
503 kw
675 hp
522 kw
700 hp
563 kw
755 hp
720 kw
965 hp
563 kw
755 hp
CM300 Series
The CM300 Series ranges from the mid-seam CM330 to the CM345
for narrow pathways and the CM845 miner bolter. These miners have
maximum cutting heights ranging from 3.1 m (122 in) to 4.6 m (181 in).
CM210
CM230
MODEL MINING RANGE WEIGHT TOTAL POWER
CM330
CM340
CM345
1.20 – 3.78 m
48 – 149 in
1.37 – 4.00 m
54 – 158 in
1.80 – 4.62 m
71 – 182 in
70 tonnes
155,000 lbs
70 tonnes
155,000 lbs
74.9 tonnes
165,000 lbs
697 kW
935 hp
697 kW
935 hp
697 kW
935 hp
CM400 Series
The CM400 Series is designed for harder-cutting applications such
as hard-cutting coal, trona and potash. They have a hard head-style
cutting head. The maximum cutting height can be extended to 4.7 m
(15.1 ft).
MODEL MINING RANGE WEIGHT TOTAL POWER
CM440
CM445
1.63 – 3.91 m 85.0 tonnes 629 kW
64 – 154 in 187,000 lbs 850 hp
1.80 – 4.62 m 90.0 tonnes 629 kW
71 – 177 in 198,400 lbs 850 hp
*Final design pending
Miner Bolter
CM340
CM445
MODEL MINING RANGE WEIGHT TOTAL POWER
CM845
2.01 – 4.70 m 78.0 tonnes 738 kW
79 – 185 in 172,000 lbs 990 hp
CM845
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Performance and Productivity
Longer Overhaul Interval
In addition to offering features that deliver superior
performance, Cat continuous miners offer a whole
range of engineering features that contribute to long,
reliable service between overhauls. This means greater
productivity and higher tonnage between rebuilds.
More Power
As a result of higher cutter motor power and a heavier
chassis than competitive models, Cat continuous miners
offer superior performance in hard-cutting applications.
Efficient Cuts
of cutting heights
Rapid change
Innitely variable tram control allows precise control
of steering, speed and traction with independent
control of the two sides. This high maneuverability
allows faster positioning and optimum cutting,
increasing productivity.
Cat continuous miners also have a lift kit that allows
cutting height changes to be made within 3 hours. This
rapid change is made possible by pin-on wire runners.
Our competitors’ machines require welding and cannot
compete with this speed.
Weight
Cat continuous miners use a 75 mm steel plate for
the main frame – 50% thicker than competitors. The
heavier, more rigid frame allows a better cutting rate
when sumping at the top of the seam and ripping
to the bottom.
Ease of Operation
Caterpillar offers a Machine Control Unit designed
to operate the entire Cat continuous miner. Based
on a mine-duty PLC, this drive and control system
combines maximized coal production and operator
safety with minimum downtime. As traction motors are
controlled by a microprocessor-based system, the design
minimizes the connection points that are the major cause
of downtime. Itprovides data logging, fast diagnostics
and enhanced troubleshooting capability.
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The optional ergonomic graphics display provides
easy access to visualization, parameters, logs and
help. Screens can be accessed via the transmitter and
parameter changes can be made. The unit allows three
modes of control: wireless for normal operation,
umbilical and a mode for troubleshooting.
Graphics display
New Generation Controls
High Availability, Low Maintenance
The dimensioning of components and structural
elements – such as motors, pumps, clevises and
pivots – and their location and packaging ensure
ease of maintenance, increase machine availability and
reduce operating costs. Cat continuous miners are built
to last. For example, the Cat clevis is 113 mm, compared
to 100 mm for our major competitor, and pin diameter
is 194 mm compared to 100 mm. The rugged design of
Cat continuous miners ensures long maintenance intervals
and higher tonnage between rebuilds.
Caterpillar has ongoing development aimed at providing
mining operations with reliable controls to the level
of complexity that ts their needs. The system can
be tailored to meet the needs of an operation with a
combination or total of:
• AC VFD (Variable Frequency Drive) or DC Drive
Options
• Integrated electronic overloads
• Color graphic diagnostic options
• Data logging
• Smart Hydraulic System
A CM210 at work in an 860 mm (34 in) seam
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Commonality of Parts
The CM220, CM230 and CM240 have common
components such as gathering head gearboxes,
conveyor motors, tram motors, tram gearboxes, electrical
boxes, radio control system, hydraulic pump, pump
motor and crawler chain assemblies.The major common
components of the CM330, CM340, CM345 and CM430
are the gathering head gearboxes, conveyor motors, tram
motors, tram gearboxes, radio control system, hydraulic
pump, pump motor, cutting head gearbox and crawler
chain assemblies.
CM220 Continuous Miner
Ease of Maintenance
Cat continuous miners are designed to facilitate
maintenance, which in turn cuts costs and increases
availability and productivity. Unlike our major
competitor, the cutter head gearcases on Cat machines
are independent. So if there is a failure on one side, only
one half of the cutter head has to be replaced as opposed
to changing the whole head.
This commonality of parts has numerous advantages:
• Lower cost of inventory and higher parts availability
• Faster replacement
• Trained technicians can x any machine in series
• Flexibility: for example, the CM230 can be converted
into a CM220
Keeps on Keeping on
Cat continuous miners have a whole range of features
designed to maximize availability, enhance maintainability,
cut operating costs and extend overhaul periods and
service life.
Motors
Motors are designed for heavy-duty 50 Hz operation
so as not to compromise power, speed or production.
Overheating and failure of these powerful motors is
prevented by electronic motor overload protection.
Cutter motors are protected by a clutch and have no
torque shafts, whereas gathering motors and dualreduction gathering gear cases are protected by quill
shafts which, like a torsional spring, twist along their
length. Cooling system monitoring ensures that the
proper ow and pressure are available to cool the
motor and electrical system.
Tram cases can be repaired on machine without
having to pull the tram case off the miner, resulting
in considerable time and cost savings.
The Centrifugal Loading Arm (CLA) has abrasionresistant replaceable tips, allowing quick and
easy refurbishment.
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Robust Gear Cases
The robust gears are made from carburized high-alloy
steel with ground teeth for accuracy and quiet operation.
The replaceable cutter head input gear cases allow quick
and economical replacement of the components most
susceptible to failure due to inadequate lubrication.
The long-life double planetary tram gear case has
separately changeable planetaries and sprockets
incorporating improved torric seal protection. The
design of the high-speed gearing makes troublesome
bevel gearing unnecessary. Helical input gears and
spiral bevel gears maximize cutter gearbox life.
Other Features
Discharge boom with automatic chain tensioner
The conveyor chain has an automatic hydraulic chain
tensioner to ensure correct chain tension. Incorrect
tensioning is the main cause of premature chain failure.
Large-diameter pins and bushings lower contact pressure
in the bushings.
Health and safety features include ventilation, dust
collector, scrubber, discharge to left or right, dust
ignition protection, water solenoid valve to minimize
water use and spillage, methane monitoring, noise
reduction, and remote control.
Life-Cycle Management
Low Overhaul Frequency
The overhaul interval is maximized by various measures
to reduce wear and tear. All major wear areas –
including spade, conveyor and cutter gear case webs –
have long-life 13 mm Chrome Carbide Overlay (CCO)
liners. Extra-large cutter boom pin and bush increase
load and fatigue capacity, while traction liners are extrathick for extended life. Cabling and hydraulic hosing
are integrated for improved protection. Spigoted and/or
keyed mounting of cutter motors, traction motors and
traction gear cases isolate mounting bolts from the load.
Frame
The heavy welded frame structure with one-piece main frame
rails is extremely robust. The steel plate used for the main frame
is 75 mm – 50% thicker than our major competitors – to ensure
greater rigidity and stability.
Wear Resistance
The gathering head and conveyor deck both feature CCO plate,
offering wear resistance many times higher than abrasiveresistant steel plate.
Wethead Compatibility
Cat® wethead technology delivers water right at the cutting
edge, resulting in better dust control, noise reduction,
operator comfort and visibility, as well as a substantial
improvement in bit life.
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Continuous Miners – Product Line �
For more complete information on Cat products, dealer services, and industry solutions,
visit us on the web at mining.cat.com and www.cat.com
© 2011 Caterpillar Inc.
All rights reserved
Materials and specifications are subject to change without notice. Featured machines in
photos may include additional equipment. See your Cat dealer for available options.
CAT, CATERPILLAR, their respective logos, “Caterpillar Yellow” and the “Power Edge” trade
dress, as well as corporate and product identity used herein, are trademarks of Caterpillar and
may not be used without permission.
AEXQ0612-01
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