Dig in Tight Spots with Komatsu’s New PC78US-11 Compact Excavator

Komatsu has launched a brand new “tight tail swing” excavator well-suited for city environments, confined areas and crowded jobsites.

With its 68-horsepower engine, six work modes and swing radius below 5 ft, the PC78US-11 can deal with exact digging, in addition to giant excavation duties.

The 12-foot 2-inch increase has a higher elevating angle and a brief implement swing radius (6 ft 9 inches minimal), giving the PC78US-11 the power to dig effectively in a crowded area. On the rear, the tail swing radius measures simply 4 ft 7 inches. Considered from above, each the entrance and the rear corners of the superstructure are rounded, with the utmost cab extension over the tracks at simply 9 inches.

For quick diggingKomatsu’s latest tight tail swing excavator is good for city environments and confined areas.Komatsu

Good operators like a fast machine, and Komastu’s sooner increase up and swing velocity will increase productiveness by 9%. To raised match machine efficiency to the appliance, Komatsu arms the PC78US-11 with six work modes: energy, economic system, lifting, breaker, attachment-power, and attachment-economy.

For operators preferring backhoe-style controls, a sample change selector valve comes commonplace. The grading blade has a brand new moldboard profile to enhance backfilling and grading effectivity. The PC78US-11 accepts buckets from zero.10 to zero.26 cubic yards.

Low upkeep calls for

A brand new high-output 2.4-liter, Tier 4 Closing engine offers you ground-level entry to service factors. The heavy-duty, high-pressure frequent rail gasoline injection system and cooled exhaust gasoline recirculation (CEGR) obtain close to full combustion in cylinder to cut back emissions.

A Komatsu diesel oxidation catalyst removes exhaust soot and allows 100% passive regeneration with out a diesel particulate filter or common refills of diesel exhaust fluid. The no-DPF, no-DEF design interprets into decrease proudly owning and working prices, decreased upkeep and one much less part to interchange or fear about.

Komatsu’s compact engine makes room for a fan clutch system, permitting engine and hydraulic system tuning to cut back noise by a full decibel. Typical in-cab noise ranges measure 71 decibels — about the identical as a family vacuum cleaner. When engine cooling just isn’t required, the viscous fan clutch reduces parasitic horsepower draw. General engine enhancements enhance gasoline effectivity as a lot as 13%.

Cab consolation

The air-suspension seat has deep aspect helps and an adjustable backrest angle to assist operators of all sizes. The cab comes with AM/FM radio with USB and Bluetooth expertise.

Komatsu improved cab dampening by incorporating a spring and an extended stroke on the viscous cab mounts. This, plus a beefed up deck, reduces vibration to the operator to maintain her or him extra snug and centered all through the day. The sealed and pressurized cab retains mud out and robotically maintains temperatures to the extent set on the monitor.

A sliding cab door makes entry simpler, particularly once you’re coming into or exiting the excavator up towards a wall or in confined areas. The cab is ROPS licensed and satisfies the necessities of ISO OPG High Guard Stage 1 for falling objects.

Crowded jobsites typically prohibit sight traces, so Komatsu added a 7-inch LCD show to the PC78US-11 with a regular rearview digital camera picture. LED lights present nighttime illumination of the jobsite.

The variable displacement/axial piston hydraulics for the increase, arm, bucket, swing and journey circuits provide a most stream of 44.4 gallons per minute. Aid-valve settings for implement circuits are rated at 4,264 psi. The auxiliary circuits put out 36.5 gpm/3,830 psi (two manner) and 21.1 gpm/2,490 psi (a technique).

For journey and trailer issues, the PC78US-11 has an working weight of 17,747 kilos.