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Bobcat’s A770 All-Wheel Steer Loader Provides Versatility in Various Working Conditions

Fri September 02, 2011 - National Edition
Construction Equipment Guide

Bobcat Company has updated its line of all-wheel steer (AWS) loaders by introducing the Bobcat A770. The unit — which offers both all-wheel steer and skid-steer drive options by simply pressing a switch — has a vertical lift path and a 3,325 lb. (1,508 kg) rated operating capacity (ROC).

The A770 replaces the A300 model, and was designed to meet the needs of users who require the low ground disturbance, reduced tire wear and faster travel speed of a small wheel loader, but also the maneuverability and versatility of a skid steer. That makes the A770 the ideal machine for landscapers, retaining wall installers, paving crews and general contractors, as well as industrial users who face multiple operating conditions on a daily basis.

The design provides a lift height of 132 in. (335 cm), reach of 31.5 in. (80 cm), and dump angle of 42 degrees for easy truck loading. The new design also results in a hefty 3,325-lb. rated operating capacity (ROC) and a 6,650-lb. (3,016 kg) tipping load.

It comes standard with two-speed transmission and a travel speed of 12.3 mph (19.8 kmh) in high range and 7.1 mph (11.4 kmh) in low range. The A770 is equipped with a 92-hp (68.6 kW), liquid-cooled Tier III diesel engine and has an operating weight of 9,460 lbs. (4,291 kg).

The A770 has a turning circle diameter of 12.6 ft. (3.8 m) in AWS mode and 7.2 ft. (2 m) in skid steer mode.

Production is Key

The A770 all-wheel steer loader has the same increased hydraulic performance as the other M-Series loader models, enabling it to efficiently accomplish more work. The hydraulic systems on M-Series loaders have been engineered for higher standard flow and pressure that give attachments more power to work more quickly, according to the manufacturer.

New job-enhancing features were added to the optional deluxe instrumentation panel. Available only on M-Series machines, the panel intelligently monitors key loader functions and the keyless start with password protection helps prevent theft. The new 5-in., full-color LCD screen offers better readability and interaction. Easy-to-read virtual sweep gauges allow the operator to quickly read and understand the machine’s performance.

Increased Uptime

The loaders are designed to work long hours on demanding job sites, and operators want to spend minimal time on routine maintenance to start the workday earlier. Simple checks and enhanced design make it easier to perform maintenance correctly at the proper intervals.

The auxiliary hydraulic quick couplers are mounted directly to the front plate of the lift arm to provide a solid mounting and hoses are routed through the loader arms for better protection. A guard bar extends in front of the coupler for added security.

Keeping the loader cool when working long hours is important in prolonging the service life of the machine. That is why Bobcat redesigned the cooling system on the M-Series for increased efficiency and higher performance. The new design also makes it easier to clean out the cooling system, with an oil cooler that swings up, allowing the operator to clean the area between the oil cooler and the radiator.

Improved Visibility

The A770, like other M-Series loader models, features a cab-forward design that not only makes the loaders look different, but also moves the operator closer to the attachment and provides added visibility in all directions.

Visibility is provided to the cutting edge of the bucket or the corners of an attachment because of the large cab door. The cab door threshold has been lowered and the overall surface of the door has increased more than 40 percent to provide improved visibility and make it easier for operators to enter and exit the cab.

Windows on the sides and rear of the cab also have been increased in size to provide more visibility to the tires and to the rear. The larger top window makes it easier and more comfortable for the operator to see the attachment with the lift arms raised; an advantage when loading trucks or performing other tasks.

Cab Comfort

Comfortable operators are more productive, so to create a better working environment, Bobcat increased the size of the M-series cab by 10 percent, redesigned the interior to allow operators to adjust the environment to their individual preferences and improved cab pressurization.

Bobcat M-Series loaders have a pressurized cab, with a new one-piece seal that goes all the way around the door and fits into a special curved pocket. This minimizes the amount of dirt and dust that might enter the cab, creating more enjoyable working conditions and making it easier to clean the cab, according to the manufacturer.

Noise is another factor affecting operator comfort, and Bobcat reduced the sound level of M-Series loaders by more than 60 percent. New engine mounts improve isolation to decrease vibration and reduce sound levels.

The standard joystick control levers move up and down in conjunction with the seat to reduce arm movement and fatigue as the operator controls the machine. These joysticks are also mounted on slides so they can be adjusted forward or backward to the preference of each individual operator.

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