Bobcat's E42, E45, and E50 compact excavators are part of its M-Series line in the 4- to 5-ton (3.6- to 4.5-t) weight class. The E42 is a conventional tail swing unit with an operating weight of 9246 lb (4194 kg). The E45 features zero tail swing and has a mass of 10,077 lb (4570 kg), while the E50 is a minimal tail swing model with a mass of 10,677 lb (4843 kg).
All three machines run Kubota engines. The E42 and E45 use the naturally aspirated V2403-M-DI-E3B 42-hp (31-kW) liquid-cooled diesel engine. The E50 runs with a turbocharged V2403-M-DI-TE3B 49-hp (37-kW) diesel.
Redesigned hydraulics with a load-sensing pump and closed center-valve system provide improved, refined control of machine travel and work-group operation. The new hydraulics combined with re-engineered boom geometry also result in increased bucket breakout forces. Cushioned work-group cylinders offer smooth end-of-stroke for precise control.
All three excavators include an auto-idle feature that, if activated by the operator, automatically returns the engine to idle if excavator functions are not used for 4 s, saving fuel and reducing jobsite noise. The engine automatically returns to the preset throttle position as soon as the operator starts working again. For precise engine speed adjustments, a new easy-to-use rotary knob has been added to the controls.
The boom swing control in the cab has been moved from the floor and placed on a thumb switch on the left joystick, making it easier to operate and opening up space for the operator’s feet. New larger travel pedals fold up to provide more floor space while flush-mounted floor mats make cleanup easier. A keyless start system that discourages theft and vandalism is available as an option.
A TOPS/ROPS canopy with high-back suspension seat, retractable seatbelt, cup holder, adjustable armrests, and lockable toolbox is standard on all three models. An enclosed “radio ready” cab with heat and air-conditioning is available as an option. The air-conditioning system features a 20% increase in air flow and additional air ducts. An optional deluxe cloth seat is also available.
Like all Bobcat M-Series compact excavators, the E42, E45, and E50 feature an X-frame undercarriage that provides improved ground clearance and sheds debris for reduced cleanup time. Drive motor covers are inset within the motor wrap-arounds to protect them from potential damage.
Integrated slew brakes hold loads still and steady on slopes for more accurate placement. The need for the operator to manually engage the slew brakes during transport is eliminated, making it easier to load and position the machine.
Bobcat says its exclusive in-track swing frame keeps the swing castings and cylinders within the width of the tracks when digging in an offset position, helping the operator dig flush against an obstacle. When other compact excavators work in an offset dig position, their components extend outside the tracks and reduce their ability to dig in tight areas.
All of the new models are available with a long-arm option that maximizes dig depth, reach, and dump height clearance. Other options include pad-ready steel tracks, a hydraulic angle blade, second auxiliary hydraulics, hydraulic clamp, and Hydraulic X-Change attachment mounting systems for quickly switching between the 16 attachments approved for the excavators.