637K Wheel Tractor – Coal Bowl Scraper

637K Wheel Tractor – Coal Bowl Scraper

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Engine

Flywheel Power - Tractor/Scraper
425 kW (570 hp)/216 kW (290 hp)

Operating Specifications

Scraper Capacity - Heaped
50yd³
Top Speed - Loaded
34.7mile/h

General

Width - Cut
11.5ft
Top Speed - Loaded
34.7mile/h
Tires - Scraper
37.25R35**E3
Tires - Tractor
37.25R35**E3
Rated Load
37 285 kg (82,200 lb)/37.285 tonnes (41.1 tons)
Rated Engine RPM - Tractor
1900r/min
Rated Engine RPM - Scraper
2150r/min
Overall Length
609.5in
Operating Weight - Empty
117782lb
Maximum Depth of Spread
21.1in
Maximum Depth of Cut
17.7in
Flywheel Power - Tractor
570HP
Flywheel Power - Scraper
290HP
Engine Model - Tractor
Cat C18 ACERT™
Engine Model - Scraper
Cat C9.3 ACERT
Emissions
Cat C9.3 ACERT and Cat C18 ACERT engines meet U.S. EPA Tier 2/EU Stage II equivalent emission standards.
180° Curb-to-Curb Turning Width
42.59ft
Scraper Capacity - Struck
41yd³
Scraper Capacity - Heaped
50yd³
Overall Width
12.93ft
Fuel Tank Refill Capacity - Scraper
370gal (US)
Overall Shipping Height
13.62ft

Dimensions

Width - Tractor
137.8in
Width - Rear Tire Centers
96.9in
Width - Overall Machine
155in
Width - Outside Rear Tires
143.2in
Width - Inside of Bowl
134in
Rear Axle - Rear of Machine
95.4in
Length - Overall Machine - Standard
609.5in
Height - Top of Cab
147in
Height - Scraper Blade Maximum
21.2in
Height - Overall Shipping
163in
Ground Clearance - Tractor
26.1in
Front of Tractor to Front Axle
142.2in
Axle to Vertical Hitch Pin
20in
Wheel Base
377in

Cab

ROPS/FOPS
Meet ISO standards
Exterior Sound Power Level
The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).

Implement Cycle Times

Apron Lower
3.8s
Apron Raise
4s
Bail Lower
2.1s
Bail Raise
1.5s
Bowl Lower
3.5s
Bowl Raise
3.5s
Ejector Extend
8.5s
Ejector Retract
8.5s

Safety Criteria Compliance Standards

Brakes
ISO 3450:2011
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Reverse Alarm
ISO 9533:2010
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Seat Belt
SAE J386:FEB2006
Steering System
ISO 5010:2007

Service Refill Capacities

Cooling System - Scraper
16.1gal (US)
Cooling System - Tractor
19.8gal (US)
Crankcase - Scraper
6.5gal (US)
Crankcase - Tractor
13.7gal (US)
Fuel Tank
370gal (US)
Hydraulic System
37.5gal (US)
Transmission System - Scraper
12.9gal (US)
Transmission System - Tractor
29gal (US)

Travel Speeds - Runout

Transmission Gear - Eighth
34.7mile/h
Transmission Gear - Fifth
14.1mile/h
Transmission Gear - First
3.4mile/h
Transmission Gear - Fourth
10.5mile/h
Transmission Gear - Reverse
6.2mile/h
Transmission Gear - Second
6.2mile/h
Transmission Gear - Seventh
25.7mile/h
Transmission Gear - Sixth
19mile/h
Transmission Gear - Third
7.7mile/h

Tractor Serviceability Improvement

The fuel, water and engine oil are relocated at ground level on the right hand side of the machine for easy access.

Brakes

Have been changed from an air actuated drum shoe brake to a hydraulic actuated tractor wet disc brake and a scraper dry caliper.

Tire Spin Reduction

This feature will allow the machine to control the slip of the tractor tires only.

Engine Over Speed Protection

In the event of an engine over speed situation, the compression brake or brakes will automatically engage with no operator input. The machine determines the over speed condition based on rate of acceleration and applies compression brakes automatically.

Advanced Cushion Hitch

With similar technology as the Cat® Advanced Ride Management seat suspension, this software allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening. Resulting in reduced hitch maintenance and improved operator ride in rough conditions.

High Pressure Steering

K Series steering system design requires significantly less steering effort. The reduced steering effort will allow for decreased operator fatigue and a more efficient operator resulting in possible higher rates of production late in the work cycle.

Differential Lock Engagement Protection

This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur.

Cab Improved

The K Series cab interior improves operator comfort and visibility. The overall interior is 21% larger than the G Series cab.

Machine Speed Limit

This feature is designed to take the place of top gear selection. If the machine top speed needs to be limited the operator can select the top speed through the display or the top speed can be set in ET. This will allow the machine to find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases resulting in a lower engine load factor and lower fuel burn verses using top gear selection that required the machine to run at engine speeds at or close to high idle.

Ground Speed Control

Ground Speed Control sets the desired top speed by the operator if job site conditions or segment speed limits require a speed less than full run out. Machine Speed Limit is intended for use when top speed needs to be limited for longer durations and Ground Speed Control is intended for use when the top speed needs to be reduced for shorter segments or intermediate periods of time. The operator can set the desired top speed and the machine will find the correct gear that works best for the engine and transmission.

Fuel Economy Mode

This is a two part feature when selected. The first part of the feature lowers the transmission shift points allowing shifting to take place at lower rpms to aid in fuel savings. The second part of the Fuel Economy Mode allows the machine when operated at engine rpms less than full throttle to automatically vary the power distribution between the tractor and the scraper.

Sequence Assist (Optional Attachment)

This option uses cylinder position sensors to automate bowl, apron and further implement controls throughout the four core work cycles: Dig, Haul, Unload and Return. When utilized this can reduce up to 14 individual operator commands per cycle. Sequence Assist simplifies control over the implements, reduces joystick usage, automatically controls cushion hitch, transmission hold and ejector.

Payload Estimator (Optional Attachment)

The Payload Estimator will calculate the payload of the machine in tonnes or tons by measuring the bowl lift cylinder pressures at the beginning of the loaded haul segment. This feature works best when using Sequence Assist. Using Payload Estimator during testing has achieved better than 95% accuracy when compared to actual scale weights. The Payload Estimator feature comes automatically when a machine is ordered with Sequence Assist.

Load Assist (Optional Attachment)

Is designed to help shorten the learning curve of inexperienced operators to ensure consistency and faster loading of material while reducing effort of the operator. Based on the speed of the machine, Load Assist automatically adjusts the cutting edge height to manage wheel slip and to ensure consistent and efficient loading in bulk earthmoving applications.

Cat Grade Control (Optional Attachment)

Intelligently ensures the machine does not cut below grade in the cut area or over fill in the fill area – avoiding rework and moving unnecessary material.

Standard Equipment:

Optional Equipment:

    Steering Arrangements
    • Secondary Steering Arrangement
    Integrated Technologies
    • Sequence Assist Arrangement
    • Advanced Tire Spin Reduction
    Other Attachments
    • Camera arrangement – WAVS
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Wiring group
    Service Instructions
    • Film arrangement – International (ISO)