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  • 621K - Open Bowl Scrapers
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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.

Maximum Depth of
540 mm
180° Curb-to-Curb Turning
11.8 m
Scraper Capacity -
13 m³
Tires - Scraper


Related Materials
File Format Size
621K Product Brochure pdf 109.42 KiB


• 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.

• Peningkatan Kemudahan Servis Traktor - Baris filter yang terletak di bagian belakang ruang engine telah diperbaiki demi memudahkan servis dengan mengangkat baris filter ke atas agar mudah diakses.

• Perlindungan Kecepatan Engine Berlebih - Jika terjadi situasi kecepatan engine berlebih, rem kompresi atau rem akan secara otomatis aktif tanpa perintah dari operator. Alat berat menentukan kondisi kecepatan berlebih berdasarkan laju percepatan dan mengaktifkan rem kompresi secara otomatis.

• Hitch Bantalan Canggih - Dengan teknologi yang serupa dengan suspensi kursi Cat® Advanced Ride Management, perangkat lunak ini memungkinkan hitch bantalan mencegah langkah akhir dengan kemampuan untuk memprediksi terjadinya langkah akhir dan mengelola tingkat peredaman. Hasil yang diinginkan adalah perbaikan hitch dan perawatan yang lebih mudah serta peningkatan kenyamanan operator di kondisi yang berat.

• Kemudi Tekanan Tinggi - Desain sistem kemudi Seri 620K hanya memerlukan sedikit tenaga untuk digunakan. Upaya mengemudi yang mudah akan mengurangi keletihan operator dan menjadikan operator lebih efisien sehingga kinerja produksi di akhir siklus kerja lebih tinggi.


Standard Equipment
Maximum Depth of Cut 315 mm
Maximum Depth of Spread 540 mm
180° Curb-to-Curb Turning Width 11.8 m
Scraper Capacity - Struck 13 m³
Tires - Scraper 33.25R29**E3
Overall Width 3.57 m
Overall Shipping Height 4.03 m
Width - Cut 3.14 m
Tires - Tractor Drive 33.25R29**E3
Top Speed - Loaded 53.9 km/h
Fuel Tank Refill Capacity - Scraper 763 l
Scraper Capacity - Heaped 18.4 m³
Rated Load 26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
Standard Equipment
Rated Engine RPM - Tractor 2000 r/min
Engine Model - Tractor Cat C13
Flywheel Power - Tractor 304 kW
Note Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Standard Equipment
Flywheel Power - Tractor/Scraper 304 kW (407 hp)
Standard Equipment
Scraper Capacity - Heaped 18.4 m³
Standard Equipment
Top Speed - Loaded 53.9 km/h
Standard Equipment
Hydraulic System 83 l
Cooling System 45 l
Fuel Tank 818 l
Crankcase 30.58 l
Diesel Exhaust Fluid 30.5 l
Transmission System 93 l
Standard Equipment
Width - Overall Machine 3585 mm
Width - Tractor 3381 mm
Width - Inside of Bowl 3048 mm
Width - Outside Rear Tires 3275 mm
Height - Overall Shipping 4029 mm
Height - Top of Cab 3612 mm
Ground Clearance - Tractor 557 mm
Front of Tractor to Front Axle 3119 mm
Axle to Vertical Hitch Pin 540 mm
Height - Scraper Blade Maximum 520 mm
Wheel Base 7998 mm
Rear Axle - Rear of Machine 2898 mm
Length - Maximum (Push-Pull) 15576 mm
Length - Overall Machine - Standard 14015 mm
Width - Rear Tire Centers 2290 mm
Width - Overall Machine - Ladder Down 3790 mm
Standard Equipment
Overall Length 14.02 m
Operating Weight - Empty 36185 kg
Standard Equipment
Operating Weight - Empty 36567 kg
Overall Length - With Bail Down 15.58 m
Standard Equipment
ROPS/FOPS Meets SAE and ISO standards
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 111.5 dB(A).