New Cat 120 GC Motor Grader offers reliable, low cost-per-hour performance

By | 2021-11-24T07:39:37+00:00 November 24th, 2021|

The new Cat 120 GC motor grader offers the market a solution in the low- to medium-duty application arena – government and municipal work, county road maintenance, and finish grading. It delivers reduced fuel consumption, low maintenance costs and easy-to-operate controls.

Its powershift transmission and balanced machine design ensure appropriate drawbar power to the ground with the fuel-efficient Cat C4.4 engine. Adapting engine power and torque to application demands, the 120 GC features electronic throttle control to improve grading productivity. With precisely matched engine power ranges for the standard rear-wheel drive and optional all-wheel drive, standard Eco mode operation increases fuel economy up to five percent. The hydraulic cooling fan, with optional reversing fan for high debris applications, only runs when necessary, to further reduce fuel consumption.

With its familiar steering wheel and lever layout consistent with the 120, 140 and 160K models, the efficient hydraulic system provides more precise and predictable control for a consistent grade. Its transmission with torque converter eliminates the need for an inching pedal, so only throttle and brake pedals are required to simplify operation. The drive system’s no-spin differential automatically unlocks in the turn to eliminate required input from the operator. The parking brake automatically engages when the machine is in neutral, and the service brake is disengaged.

Cat 120 GC motor grader. Photo credit: Caterpillar UK Ltd.

Cat 120 GC motor grader. Photo credit: Caterpillar UK Ltd.

Built with long-life machine structures for reliable operation, the 120 GC’s standard drawbar circle moldboard increases durability with hardened circle teeth and replaceable wear inserts protecting main component structures. This design stays factory tight to provide long-term precision grading, while the circle drive slip clutch option protects the drawbar, circle and moldboard from potential damage if the machine strikes an immovable object. Easy to maintain, the available Circle Saver option reduces daily greasing requirements and repairs to the circle and pinion. The grader’s new front axle design maximises bearing life to minimise maintenance.

A narrow machine width of 2.4m (7.9ft) plus cab choice of standard or low-profile to reduce overall transport height to 3.12m (10.25ft) makes it easier to transport. For operating comfort, the cab offers an option between mechanical or air suspension seat, while the control console and steering wheel easily adjusts to the operator’s preference. Pressurised to prevent debris entry, the cab’s optional HVAC system circulates fresh air to keep the windows from fogging.

The optional Digital Blade Slope Meter shows the operator the grade without relying on manual grade checkers. Available all-wheel drive increases traction and efficiency, while the increased engine power that comes with the option improves performance on slopes and with poor underfoot conditions. The 120 GC offers 3.0m, 3.7m, and 4.3m (10ft, 12ft, and 14ft) moldboard options to meet a range of road coverage requirements, and a newly redesigned mid-mount scarifier improves visibility of the attachment while decreasing overall machine length. Improving machine performance, the 120 GC features a common front bolster for a choice of front lift group, counterweight, or front blade option, which aids in spreading more material faster. The rear of the machine accommodates a ripper or tow hitch option.