CM240^Non-Current

This means greater productivity and higher tonnage between rebuilds.

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.

The heavier, more rigid frame allows a better cutting rate when sumping at the top of the seam and ripping to the bottom.

As traction motors are controlled by a microprocessor-based system, the design minimizes the connection points that are the major cause of downtime. It provides data logging, fast diagnostics and enhanced troubleshooting capability. 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.

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

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.

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. 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 abrasion-resistant replaceable tips, allowing quick and easy refurbishment.

This commonality of parts has numerous advantages:
• Lower cost of inventory and higher parts availability
• Faster replacement
• Trained technicians can fix any machine in series
• Flexibility: for example, the CM230 can be converted into a CM220

Cutter motors are protected by a clutch and have no torque shafts, whereas gathering motors and dual-reduction gathering gear cases are protected by quill shafts which, like a torsional spring, twist along their length. Cooling system monitoring ensures that the proper flow and pressure are available to cool the motor and electrical system.

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.

Extra-large cutter boom pin and bush increase load and fatigue capacity, while traction liners are extra-thick 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.