Coal Bowl Scrapers

<p>Cat® coal bowl scrapers use a high volume bowl designed to help the power generation industry move low density loose coal within the power generation facility.</p>


637K Product  Brochure

637 Coal Bowl - Key Features (Global)

637 Coal Bowl Technical Specifications

Be More Productive

Work in Comfort

Designed for Safety

Easy to Operate

Integrated Cat Technologies

Execute Efficiency

637 coal bowls are longer and higher than standard wheel tractor scraper bowls, allowing them to haul 38 m (50 yd) of low density loose coal. The bowls are designed and built to specifically deliver in coming loose coal to the stock pile and reserve stock piled coal to the feeder system.

Haul More Coal

The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).

Cat C9.3  and Cat C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV engine emission standards.

34 472 kg (76,000 lb)/34.20 tonnes (38 tons)

ISO 3471:2008 for up to 21 282 kg (46,919 lb)

Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

Improvements in fuel efficiency and the new APECS transmission controls deliver more productivity in most applications

More Productivity

New safety features help operators be more productive and work more efficiently all day long

360 Exterior View

360 Interior View

637 Coal Bowl Scraper

657 Product Brochure

657 Coal Bowl Key Features (Global excluding China and Japan)

657 Technical Specifications

Purpose-Built Coal Bowl

Caterpillar offers Wheel Tractor-Scrapers designed exclusively for your coal stockpiling and retrieval needs. The Caterpillar® 657 Coal Bowl Scrapers can construct and maintain your coal stockpiles, as well as haul loads to your inlet supply system to meet the burn requirements of the plant.

High productivity / low cost solution

Enhanced Operator Comfort

High volume Coal Bowl design, Improvements in fuel efficiency, utilizing payload estimator, and the new APECS transmission controls deliver increased productivity

Improved Productivity

Safety features help increase operator confidence by providing a safer environment for operations - effective wet disc brakes, WAVS camera, and powered access cab entry

Unparalleled Safety

657 Virtual Product Tour

Exterior Spin Set

360° Exterior View (HTML)

interior-spinset

360° Interior View (HTML)

Specalog

<ul><li>Caterpillar Coal Scraper bowls come from the factory especially built for coal handling.</li><li>An auger mechanism in the bowl improves self-loading capabilities by lifting material off of the cutting edge and carrying it to the top of the load.</li></ul>

MAXIMIZE PERFORMANCE

<ul><li>Proven Cat engines provide the power and torque rise for excellent lugging in tough loading conditions.</li><li>Variable injection timing and duration improve fuel efficiency and cold starting, decrease smoke and emissions.</li><li>Throttle back-up provides the operator with a preset engine speed control in the event of a throttle input failure.</li><li>Throttle lock allows the operator the capability of locking both engines at any operating level.</li><li>Directional shift management prevents the operator from shifting out of neutral when engine rpm is above a preset level.</li><li>Controlled throttle shifting increases drive train life by reducing the fuel injection rate just prior to shifting.</li><li>The aftercooler lowers intake charge air temperature to increase power and reduce thermal stresses that can cause premature wear of pistons, rings, and liners.</li><li>Engine oil cooler maintains optimum oil temperature for proper cooling and longer lubricant life.</li><li>Laminated thermal-shield improves tractor protection by reducing the temperature of exposed engine surfaces, cools engine and operating compartments, extends hose and wiring life.</li><li>Eight-speed power shift transmission provides automatic, on-the-go shifting for simple, reliable operation.</li><li>Top gear control helps prevent shifting above a programmed gear to better regulate haul road speeds.</li><li>The hydraulic retarder extends brake life when working on severe, downhill slopes.</li><li>Scraper driveline guard protects the output case, differential and ejector cylinder to help minimize driveline maintenance costs.</li></ul>

BUILT TO PERFORM

<ul><li>Standard rubber-mounted cab reduces noise and vibration for comfortable, shift-long operation.</li><li>Hydraulic servo-steering system provides low-effort automotive feel and excellent maneuverability.</li><li>Tilt steering column adjusts to five different positions for operator comfort and control.</li><li>A suspension seat delivers a comfortable ride.</li><li>The Electronic Monitoring System checks important machine systems and provides a three-level warning.</li><li>Air conditioning to keep the operator comfortable.</li><li>The electronically controlled cushion hitch design dampens shocks to provide a smoother ride, and locks down for positive control of the cutting edge during loading and dumping.</li></ul>

OPERATOR COMFORT AND CONTROL

<ul><li>Service points for the engine are grouped on the right side for easy access. Service platforms and numerous handholds improve access and safety. Folded core radiator allows individual cores to be replaced as modules, reducing service time and expense.</li><li>Diagnostic connector, with the aid of a service tool, allows quick analysis of the starting and charging circuits.</li><li>Electronic ground level shutoff enables the operator to stop the engine from the ground with the flip of a switch.</li><li>Centralized lubrication blocks for the hitch and steering reduce lube time.</li></ul>

SAVE ON MAINTENANCE TIME

<ul><li>Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear.</li><li>Separate front and rear circuits. Secondary brakes engage automatically if service pressure drops.</li><li>Parking Brake features a spring-applied, air-released mechanism that operates the service brakes.</li><li>Differential Lock improves traction in slippery conditions.</li></ul>

BUILT-IN SAFETY FEATURES

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing the Cat 657E Coal Scraper to consistently deliver high productivity at the lowest cost per ton.

High productivity at the lowest cost per ton

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