Check out this video from the Prelinger Archive showing 1950s construction equipment, including a Gradall, installing underground electrical infrastructure – but perhaps don't take any safety cues!
Heavy-duty trencher from Ditch Witch offers purpose-built design
Ditch Witch, a Charles Machine Works Company, introduced its largest trencher to date, the HT275, to boost productivity and versatility on a broad range of trenching jobs. The unit was designed to increase year-over-year return on investment (ROI) on water, sewer, gas, power and underdrain installations, pipeline distribution and other heavy-duty trenching tasks.
The HT275 provides operators exceptional efficiency on installations up to 10-ft deep and 26-in wide. A fully utilized Cummins® 275-hp (205-kW) T4 engine provides the power to tackle a variety of jobsite environments and digging conditions. And a hydrostatic trencher-chain drive with an infinitely variable displacement motor allows operators to easily match chain speeds to soil conditions.
"Designed specifically for heavy-duty trenching, the HT275 is an excellent addition to the fleet of any underground construction contractor working on a broad range of trenching jobs," said Steve Seabolt, Ditch Witch product manager, heavy duty trenchers. "Modular and patent-pending designs and purpose-built attachments further enhance productivity and enable contractors to accept a broader range of jobs than previously feasible."
The HT275 boosts jobsite performance with four hydraulic quick-disconnect blocks that reduce the time it takes to change attachments from days to hours. The design allows operators to change rear attachments in the field without the use of heavy lifting equipment. And, for better performance on uneven terrains, the machine has a patent-pending suspension that mounts to the center of each track frame. This innovative design feature provides the unique ability to "float" each track independently, which takes stress off the main frame.
Equipped with a power sliding cab and featuring external cameras, the HT275 offers industry-leading visibility of the jobsite. Operators also benefit from unparalleled comfort and control due to an air-ride suspension seat with 270-degree rotation, ergonomic joystick controls and dual 7-inch displays.
A one-piece, fully opening hood offers easy access to the engine and all routine maintenance points. The HT275 features a unique wireless remote that allows operators to perform daily service and inspections — including advancing the digging chain from ground level — saving time and simplifying maintenance. The trencher's patent-pending track frame is designed for easy removal, which further simplifies serviceability by minimizing time spent on track repairs.
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