EG20 Grader raises the bar in underground haul road maintenance
Elphinstone has set the standard in underground haul road maintenance with the recently released EG20 Underground Grader. Based on the Caterpillar next-generation 120 surface grader platform, the EG20 features improved operator comfort and delivers balanced weight, power, and agility to maximise performance.
The role of the underground grader is to prepare and maintain quality haul and access roads with adequate drainage throughout the tunnel network.
The added benefit is a significant increase in the productivity of the haulage fleet, reducing equipment tyre wear increasing component life, and speed on grade.
In 2018, Elphinstone identified an opportunity to expand its growing range of underground mining support vehicles by including a purpose-built underground grader based on the Caterpillar 120K and 120M surface grader platform.
Elphinstone UG20K and UG20M underground graders operate worldwide including Canada, Argentina, Chile, the Democratic Republic of Congo, India, Mongolia, Mali, Mexico, Peru, Burkina Faso, Kazakhstan, Tanzania, Saudi Arabia, South Africa, and the USA.
Superseding the K&M series, the new EG20 series incorporates all Cat 120 standard upgrades and redesigned Elphinstone modifications, improving operator safety, ergonomics, comfort, and view of the blade.
Built to work hard
When conditions get tough, the robust frame, work tools and powertrain of the EG20 get the work done.
The EG20 drawbar is designed for high strength with hardened circle teeth for increased durability. Rippers (factory fit options) are available to assist with grading underground roadway surfaces.
The blade lift cylinder accumulators assist in reducing blade bounce and damage to the blade components.
Powered by the C7.1 ACERT Tier 3 engine arrangement, the EG20 meets the standard for regions that may not have ultra-low sulphur Fuel or more stringent emission regulations.
The Cat C7.1 uses Caterpillar’s breakthrough ACERT™ Technology to meet exhaust emission reduction standards. It features efficient fuel delivery, air management to provide outstanding performance and lower emissions, and electronic control for high productivity and exceptional service life.
The C7.1 ACERT Tier 4 Final Stage V engine arrangement is available, adhering to EU Stage V exhaust emission standards.
The electronic throttle control provides easier, more precise and consistent throttle operation. Engine over-speed protection prevents downshifting until an acceptable safe travel speed has been established.
Variable horsepower (VHP) Plus provides more power in the higher gears.
All power train components are specifically made to be rebuilt, adding value to the total cost and lifecycle of the machine.
Operator comfort
The EG20 enclosed cab has been redesigned to improve ergonomics, machine control adjustability and visibility.
The Roll Over Protection System (ROPS) or Falling Object Protection System (FOPS) cab provides a quiet environment with low vibration levels reducing operator fatigue, so the operator remains efficient, productive and safe.
Features include low-effort pedals and controls; adjustable implement controls, adjustable steering wheel angle, and adjustable seat all provide a comfortable work environment while tandem tyres enhance productivity and safety.
The digital instrument panel, with easy-to-read, high-visibility gauges and warning lamps, places vital machine information and diagnostic capability in direct view of the operator. Working in the dark is much easier with a backlit transmission shifter and rocker switches.
The instrument cluster includes gauges for engine coolant temperature, articulation, voltage and fuel level, service brake air pressure gauges, speedometer, tachometer, and an hour meter.
Operator comfort is further enhanced with phone connectivity through Bluetooth™ or auxiliary cord, USB charging port, phone holder, built-in radio mount, and additional storage areas including cup holders on both sides of the cab. The air conditioning (HVAC) system dehumidifies and pressurises the cab, circulates fresh air, removes dust, and prevents the windows from fogging.
Machine Safety
With safety as a priority, the EG20 is engineered with features to help protect the operator and others on the job site. The EG20 features a ground-level engine shut-off switch and refuelling, laminated glass windows, door and seat belt park brake interlocks with visual and audible detection alarms, a seat belt cutter, a robust rear guard, and a front counterweight for machine balance.
Emergency stops and fire suppression actuators are conveniently located at ground level and inside the cab, and hydraulic brakes replace air brakes that were previously standard on the UG20K.
High-visibility green grab rails and steps for 3-point contact, brake and backup lights, alarms, and blade and rear-view cameras with dedicated displays all combine to ensure a safe work environment. The ground-level fuel fill system prevents the need to climb onto the machine for refuelling. An optional fast fill is also available at ground level.
Maintenance and Serviceability
Grouped service points make daily maintenance easier and faster while enhanced diagnostics and monitoring help reduce downtime.
Ground-level access to service points reduces risk and time spent checking the machine’s status, while next-generation filters help you reduce your filtration costs.
Standard Product Link™ provides location, machine hours, fuel usage, productivity, idle time, diagnostic codes, and other machine data on demand through the VisionLink® online interface, improving job site efficiency and lowering operating costs.
The Elphinstone EG20 can be optioned with a wide range of additional features to suit each specific mine site application – eg. fire suppression, automatic lubrication, rippers etc.
Sales and Support
All Elphinstone® products, technical assistance, support, and access to spare parts are available through the global Cat® dealer network with additional support from the Elphinstone regional sales and support team.