New Cat Excavator Built for High-Reach Demolition Tasks

Published: 5/5, 2020

The Cat 352 UHD ultra-high demolition excavator is designed to handle the difficult demolition of tall structures using a range of Cat demolition attachments, including multi processors, grapples, shears and hydraulic hammers with the retrofit boom. The UHD front can be switched for a straight or bent (retrofit) boom position for lower level demolition and earthmoving applications. This switch typically is done in about 15 minutes by two people with no special tool required.


The 352 UHD features a variable gauge undercarriage (hydraulically activated), as well as the Cat Active Stability Monitoring system, which continuously informs the operator of work tool position within a safe working range and warns when approaching stability limits.

In the UHD configuration, the 352 UHD provides 92 ft (28m) of vertical height to the work tool attachment pin, and 52 ft (15.8m) of horizontal reach when working with a 3.7t tool. These ample specifications allow the 352 UHD to demolish structures eight or nine stories high quickly, with precision and control thanks to the electro hydraulic control system. The undercarriage gauge is 13 ft (4m) for optimum stability when working, and 10 ft (3m) for transport with 23.6 in (600mm) track shoes.

The 352 models use the Cat C13 engine, rated at 304kW, which meets U.S. EPA Tier 4 Final emissions standards. The C13 also is capable of operating on biodiesel up to B20. Three power modes in the machine allow the operator to match machine performance to the task at hand and a new high efficiency, hydraulic, reversing fan cools the engine on demand to help reduce fuel consumption.

When using a retrofit boom, the machine can use the 2D grade control system, swing e-fencing, and the Cat Payload on-board weighing system. The latter can be used with VisionLink online telematics interface to remotely manage production targets via the machine’s Product Link™ telematics system.

The Cat demolition cab features a falling objects guard structure (FOGS) and includes front and roof laminated glass with a P5A impact rating. The cabs tilt up 30 degrees, providing optimum line of sight to the work tool and a more productive, more comfortable working position for the operator. The windshield and roof glass feature one-piece parallel wipers with three intermittent settings with washer spray. A premium seat, heated and cooled, is standard. Rear view and right-hand side view standard cameras provide clear images on the monitor.

The left console tilts up for easy cab entry and exit; advanced viscous mounts reduce cab vibration up to 50% when compared with previous excavator models, with controls being easily accessed. UHD models are equipped to accept a work tool camera, which can be installed by the Cat dealer with a kit. Standard radio has USB ports and Bluetooth technology to connect personal devices and to make hands free calls.

In the cab, each joystick button can be programmed, including power mode, response and pattern with these settings being recalled using appropriate operator identification. An automatic hydraulic oil warmup feature quickly brings the system to operating temperature and helps prolong component life. A high resolution 10-in (254mm) touchscreen monitor allows fast navigation, including operating and maintenance tutorials.

Extended service intervals help reduce maintenance costs, whilst ground level hydraulic oil checks and fuel system water drains speed routine service. Filter life and maintenance intervals can be tracked via the in-cab monitor. All fuel filters can be changed at a synchronized 1,000 hours and oil and fuel filters are grouped on the right-hand side of the machine for easy access.

The engine air intake filter with pre cleaner has double the dust holding capacity of the previous filter, and the hydraulic oil filter provides improved filtration performance, and anti-drain valves to keep oil clean when the filter is replaced at a 3,000-hour interval. Oil sampling ports further simplify maintenance and allow for easy extraction of fluid samples.

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