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Global-CE > Tractor > Cat Tractor > Cat Wheel Tractor-Scrapers 621K
Cat Wheel Tractor-Scrapers  621K

Cat Wheel Tractor-Scrapers 621K

Product Feature

• Tractor Serviceability Improvement - The filter bank located at the rear of the engine compartment has undergone improvements for serviceability by raising the filter bank up for easier access.

• 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. The desired result is improved hitch repair, reduced maintenance and improved operator ride in rough conditions.

• High Pressure Steering - 620K 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.

• Draft Arm Overflow Guards - The open bowls now come standard with bowl side overflow guards to help prevent material from flowing over the bowl sides and falling onto the draft arms where material becomes lodged between the bowl side and draft arm resulting in decreased work cycle times.

• Auto Stall - In cold weather conditions the machine will use the Auto Stall feature to help warm up the transmission oil faster resulting in the machine shifting out of torque converter drive (2nd gear) faster than on previous models.

• Differential Lock Engagement Protection (Standard) - This standard feature allows the machine to prevent the operator from engaging the differential lock when damage could occur.

• Cab Improved - The interior of the K Series cabs has improved the operator comfort and visibility by redesigning the dash area and key pad placement.

• 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 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. Allowing the engine and transmission to select the correct gear to pull the load in most cases will result in a lower engine load factor and lower fuel burn verses top gear selection.


Product Parameter

Overview

Quick loading, high travel speeds and the ability to load and dump on the run yield fast cycle times, allowing Cat Wheel Tractor-Scrapers to consistently deliver high productivity at the lowest cost per ton.

General

Units:

180° Curb-to-Curb Turning Width38.71 ft 11.8 mLess
Fuel Tank Refill Capacity - Scraper201.0 gal (US) 763.0 lLess
Maximum Depth of Cut12.4 in 315.0 mmLess
Maximum Depth of Spread21.3 in 540.0 mmLess
Overall Shipping Height13.22 ft 4.03 mLess
Overall Width11.71 ft 3.57 mLess
Rated Load26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons) 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)Less
Scraper Capacity - Heaped24.0 yd³ 18.4 m³Less
Scraper Capacity - Struck17.1 yd³ 13.0 m³Less
Tires - Scraper33.25R29**E3 33.25R29**E3Less
Tires - Tractor Drive33.25R29**E3 33.25R29**E3Less
Top Speed - Loaded33.5 mile/h 53.9 km/hLess
Width - Cut10.3 ft 3.14 mLess

Engine

Engine Model - TractorCat C13 ACERT™ Cat C13 ACERT™Less
Flywheel Power - Tractor407.0 HP 304.0 kWLess
NoteCat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards. Cat C13 ACERT engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.Less
Rated Engine RPM - Tractor2000.0 r/min 2000.0 r/minLess

Tractor Engine

Flywheel Power - Tractor/Scraper304 kW (407 hp) 304 kW (407 hp)Less

Scraper Bowl

Scraper Capacity - Heaped24.0 yd³ 18.4 m³Less

Transmission

Top Speed - Loaded33.5 mile/h 53.9 km/hLess

Service Refill Capacities

Cooling System11.89 gal (US) 45.0 lLess
Crankcase8.08 gal (US) 30.58 lLess
Diesel Exhaust Fluid8.057 gal (US) 30.5 lLess
Fuel Tank216.09 gal (US) 818.0 lLess
Hydraulic System21.926 gal (US) 83.0 lLess
Transmission System24.76 gal (US) 93.0 lLess

Dimensions

Width - Overall Machine141.1 in 3585.0 mmLess
Width - Tractor133.1 in 3381.0 mmLess
Width - Inside of Bowl120.0 in 3048.0 mmLess
Width - Outside Rear Tires128.9 in 3275.0 mmLess
Height - Overall Shipping158.6 in 4029.0 mmLess
Height - Top of Cab142.2 in 3612.0 mmLess
Ground Clearance - Tractor21.9 in 557.0 mmLess
Front of Tractor to Front Axle122.8 in 3119.0 mmLess
Axle to Vertical Hitch Pin21.3 in 540.0 mmLess
Height - Scraper Blade Maximum20.5 in 520.0 mmLess
Wheel Base314.9 in 7998.0 mmLess
Rear Axle - Rear of Machine114.1 in 2898.0 mmLess
Length - Maximum (Push-Pull)613.2 in 15576.0 mmLess
Length - Overall Machine - Standard551.8 in 14015.0 mmLess
Width - Overall Machine - Ladder Down149.2 in 3790.0 mmLess
Width - Rear Tire Centers90.2 in 2290.0 mmLess

Non Push-Pull

Operating Weight - Empty79787.0 lb 36185.0 kgLess
Overall Length45.9 ft 14.02 mLess

Push-Pull

Operating Weight - Empty80630.0 lb 36567.0 kgLess
Overall Length - With Bail Down51.1 ft 15.58 mLess

Cab

Exterior Sound LevelThe exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A). The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).Less
ROPS/FOPSMeets SAE and ISO standards Meets SAE and ISO standardsLess

Safety Criteria Compliance Standards

BrakesISO 3450:1996 ISO 3450:1996Less
Falling Object Protective Structure (FOPS)ISO 3449:2005 Level II ISO 3449:2005 Level IILess
Reverse AlarmISO 9533:2010 ISO 9533:2010Less
Rollover Protection Structure (ROPS)ISO 3471:2008 for up to 17 084 kg (37,664 lb) ISO 3471:2008 for up to 17 084 kg (37,664 lb)Less
Seat BeltSAE J386:JUN1985 SAE J386:JUN1985Less
Steering SystemISO 5010:2007 ISO 5010:2007Less

Travel Speeds - Runout

Transmission Gear - Eighth33.5 mile/h 53.9 km/hLess
Transmission Gear - Fifth13.6 mile/h 21.9 km/hLess
Transmission Gear - First3.1 mile/h 5.0 km/hLess
Transmission Gear - Fourth10.1 mile/h 16.3 km/hLess
Transmission Gear - Reverse5.7 mile/h 9.2 km/hLess
Transmission Gear - Second5.5 mile/h 8.9 km/hLess
Transmission Gear - Seventh24.8 mile/h 39.9 km/hLess
Transmission Gear - Sixth18.4 mile/h 29.6 km/hLess
Transmission Gear - Third7.5 mile/h 12.1 km/hLess

Implement Cycle Times

Apron Lower3.8 s 3.8 sLess
Apron Raise2.95 s 2.95 sLess
Bail Lower3.2 s 3.2 sLess
Bail Raise1.8 s 1.8 sLess
Bowl Lower3.5 s 3.5 sLess
Bowl Raise3.0 s 3.0 sLess
Ejector Extend5.2 s 5.2 sLess
Ejector Retract6.7 s


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