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Open Bowl Scrapers(Non Current)

Cat Wheel Tractor-Scrapers have the power, traction, and speed for reliable output in a variety of applications. Scraper options include single- and tandem-engine open bowls, tandem engine push-pulls, elevators, and auger arrangements.

621G Scrapers

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

  • Specification Summary

  • Net Power – Tractor/Scraper 246 kW (330 hp)
  • Gross Power - Gears 1-2 268.0 kW
  • Gross Power - Gears 3-8 294.0 kW
  • Net Power - Gears 1-2 246.0 kW

Product Details

Tractor Engine

Net Power – Tractor/Scraper 246 kW (330 hp)
Gross Power - Gears 1-2 268.0 kW
Gross Power - Gears 3-8 294.0 kW
Net Power - Gears 1-2 246.0 kW
Net Power - Gears 3-8 272.0 kW
Caterpillar Net Power 246.0 kW
ISO 9249 246.0 kW
EEC 80/1269 246.0 kW
SAE J1349 243.0 kW
Bore 140.0 mm
Stroke 165.0 mm
Displacement 15.2 L

Scraper Bowl

Capacity Heaped 17.0 m3
Rated Load 23950.0 kg
Capacity Struck 12.0 m3
Depth of Cut - max. 333.0 mm
Width of Cut, to Router Bits 3023.0 mm
Ground Clearance - max. 522.0 mm
Cutting Edge - thickness 22.0 mm
Hyd. Penetration Force - 621G 150.4 kN
Depth of Spread - max. 522.0 mm
Apron Opening 1780.0 mm
Apron Closure Force 107.0 kN

Transmission

Travel Speed Maximum 51.5 km/h
1 Forward 5.0 km/h
2 Forward 7.6 km/h
3 Forward 10.9 km/h
4 Forward 14.8 km/h
5 Forward 19.9 km/h
6 Forward 26.9 km/h
7 Forward 36.4 km/h
8 Forward 51.5 km/h
Reverse 9.2 km/h

Engine

Tractor Engine C15 ACERT

Weights

Operating Weight 56513.0 kg

Weights - Standard, tandem

Total Shipping 32865.0 kg
Tractor Shipping 22677.0 kg
Scraper Shipping 10118.0 kg
Total Operating - empty 33470.0 kg
Front Axle 22760.0 kg
Rear Axle 10710.0 kg
Total Operating - loaded 57420.0 kg
Front Axle Weight - loaded 30433.0 kg
Rear Axle Weight - loaded 26987.0 kg

Dimensions

Width - overall machine 3467.0 mm
Width - tractor 3130.0 mm
Width - rear tire center lines 2180.0 mm
Width - inside of bowl 2946.0 mm
Width - outside rear tires 3048.0 mm
Height - overall shipping 3705.0 mm
Height - top of cab 3423.0 mm
Ground Clearance, Tractor 553.0 mm
Front of Tractor to Front Axle 3058.0 mm
Rim radius 432.0 mm
Axle to Vertical Hitch Pin 432.0 mm
Height - scraper blade max. 522.0 mm
Wheelbase 7722.0 mm
Length - overall machine 12917.0 mm
Rear Axle to Rear of Machine 2142.0 mm
Bail Length - max. (push-pull) 1612.0 mm
Extended Push Block (push-pull) 2786.0 mm

Service Refill Capacities – Tractor

Crankcase 36.0 L
Transmission 72.0 L
Differential 144.0 L
Final Drive (per side) 19.0 L
Cooling System 107.0 L
Hydraulic Reservoir 140.0 L
Wheel Coolant (each) 45.0 L
Windshield Washer 6.0 L

Hydraulics

Bowl Cylinder Bore 152.0 mm
Bowl Cylinder Stroke 813.0 mm
Apron Cylinder Bore 184.0 mm
Apron Cylinder Stroke 597.0 mm
Ejector Cylinder Bore 165.0 mm
Ejector Cylinder Stroke 1549.0 mm
Steering Circuit 209.0 L/min
Scraper Circuit 284.0 L/min
Cushion Hitch Circuit 37.0 L/min
Secondary Steering Circuit 150.0 L/min
Relief Valve - Steering Circuit 15500.0 kPa
Relief Valve - Implement Circuit 15000.0 kPa
Compensator Setting - Cushion Hitch Circuit 16000.0 kPa

Steering

Width - 180° Turn 10.9 m
Steering Angle – Right 90°
Steering Angle – Left 85°
Hydraulic Output 209.0 L/min

Power Train – Engine

Electronically controlled Caterpillar® engines with ACERT technology, modular radiator with 9 fins per inch, and an Electronic Control Module maximizes power to the cutting edge and exceptional haul road speed.

Power Train – Transmission

Planetary powershift transmission delivers excellent load capability. Redesigned front and rear axles accommodate wider brake shoes and drums. The neutral coast inhibitor and programmable top gear reduce wear while increasing machine performance.

Electronic Controls

Electronic controls improve machine response and provide advanced diagnostic capabilities that result in better machine availability. The Product Link option allows remote monitoring of location, machine system status, and alert indicators.

Operator Station

Convenient control placement and a comfortable work environment are keys to high productivity. Features include Single Lever Implement Control, an air seat suspension and improved instrumentation.

Structures

Superior structural design delivers state-of-the-art ride, capacity, and material control while assuring the durability and reliability customers expect from Caterpillar.

Scraper Bowl

Caterpillar Scraper bowls deliver large loads with better retention, excellent material flow, fast cycle times and high productivity. Relocating the implement valve to the draft tube improves access and serviceability.

Auger Arrangement

Provides self-loading capability with the same wide material appetite as an open bowl machine.

Serviceability

The latest electronic monitoring systems, grouped service points, and rugged Caterpillar components simplify maintenance and minimize downtime. New two-piece access doors open easily and stay open for better access.

Customer Support

The best parts availability and the best service capability will help keep your equipment working.
Catepillar Equipments

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