intlooki.blogg.se - november 2023

#Cat d7 generator
#Cat d7 plus
#Cat d7 series

The C9.3 engine is smaller and achieves rated power at 1,700 rpm, compared to the D7R's 240-horsepower Cat 3176.

#Cat d7 generator

And because power flows from the generator to the electric drives through cables, rather than a hard drive shaft, the tractor's heaviest components can be positioned optimally in the frame for ideal machine balance. The electric drive train has 60 percent fewer moving parts than the drive in previous D7s. The current powers two AC drive motors arranged in series, which drives a differential steering system much like that used on other Caterpillar dozers.

The drive is developed by Caterpillar specifically for crawler tractors.Ī 235-horsepower Cat C9.3 diesel drives a generator to produce electricity that runs to a power module where it is inverted to AC current. The drive system takes advantage of today's small, less-costly semiconductors that can rectify heavy-duty-drive voltage to AC, eliminating brushes.

#Cat d7 series

Production of the D7RII is planned to end in the middle of next year.Ĭaterpillar electric D7E crawler dozer is the first electrically driven dozer using modern alternating-current (AC) technology, and Cat claims it will move up to 25 percent more material per gallon of fuel than the D7R Series II. Cat expects D7E production to begin in October, with some specialty adaptations (a solid-waste version, for example) to be introduced in spring of 2010. They promised 10 percent better production per hour with 10 to 30 percent lower fuel consumption, but is that enough to outweigh a $600,000 price tag?Įighteen pre-production D7E hybrid bulldozers built on Caterpillar’s line in East Peoria have amassed thousands of hours in customer operations. In addition to machine protection against impacts and airborne debris, these specialty dozers can be ordered with an impact-resistant cab, application-specific undercarriage and a specialty blade.At the D7E's official introduction event in Peoria, Cat representatives spoke for the first time of the electrically driven bulldozer as a “hybrid-electric” tractor, and candidly discussed the 20-percent premium it is expected to draw over the D7RII it will soon replace.

The D7 can also be ordered with specialized guarding to take on the challenges of Waste/Landfill work and Forestry/Land Clearing.

The D7 is available in Standard or Low Ground Pressure (LGP) configurations, with a variety of blade and track shoe choices to optimize the machine for the intended application.

Cat LINK telematics technology offers a range of security, accessibility and management features.

Cat COMMAND for Dozing offers line-of-sight (LOS) control using an over-the-shoulder console, or a non-line-of-sight (NLOS) option using the Cat Command Station to run the machine remotely.

Customers can also add factory-integrated Cat GRADE with 3D.

ARO with Assist is a grade-ready technology option bundled with basic blade control and a new set of assist features that just work in the background to help operators get more done in less time.

Standard High Definition rearview camera shows prominently in the main display.

Easy-to-use 10-in (254-mm) touchscreen operator interface.

Redesigned cab, common with the D5 and D6/D6 XE, improves comfort and productivity.

Elevated sprocket undercarriage delivers better ride and balance, as well as increased penetration force.

The D7 moves up to 8% more material per hour than the D7E, with about 6% more weight and 12% more horsepower.

(29,776 kg), the new D7 dozer replaces the D7E

At 265 hp (197 kW) and an operating weight of 65,644 lbs.

#Cat d7 plus

A fully automatic 4-speed transmission offers optimal fuel and dozing efficiency, plus ease of operation.The new Cat® D7 dozer offers high drive undercarriage design, increased performance and an array of easy-to-use technology features to help operators get the most from their bulldozers.