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Overview

Engine

Units:
Tractor Engine Cat® C15 ACERT™ Cat® C15 ACERT™ Less

Tractor Engine

Gross Power - Gears 1-2 359.0 hp 268.0 kW Less
Gross Power - Gears 3-8 394.0 hp 294.0 kW Less
Net Power - Gears 1-2 330.0 hp 246.0 kW Less
Net Power - Gears 3-8 365.0 hp 272.0 kW Less
Caterpillar Net Power 330.0 hp 246.0 kW Less
ISO 9249 330.0 hp 246.0 kW Less
EEC 80/1269 330.0 hp 246.0 kW Less
SAE J1349 326.0 hp 243.0 kW Less
Bore 5.7 in 145.0 mm Less
Stroke 7.2 in 183.0 mm Less
Displacement 1098.0 in3 18.0 L Less
Net Power - Tractor/Scraper 246 kW (330 hp) 246 kW (330 hp) Less

Scraper Bowl

Rated Load 52800.0 lb 23950.0 kg Less
Capacity Struck 15.7 yd3 12.0 m3 Less
Depth of Cut - max. 13.1 in 333.0 mm Less
Width of Cut, to Router Bits 119.0 in 3023.0 mm Less
Ground Clearance - max. 20.6 in 522.0 mm Less
Cutting Edge - thickness 0.88 in. 22.0 mm Less
Hyd. Penetration Force 119600.0 lb 532.0 kN Less
Depth of Spread - max. 20.4 in 519.0 mm Less
Apron Opening 70.0 in 1780.0 mm Less
Apron Closure Force 24075.0 lb 107.0 kN Less
Capacity Heaped 22.0 yd3 17.0 m3 Less

Transmission

1 Forward 3.2 mph 5.1 km/h Less
2 Forward 5.8 mph 9.3 km/h Less
3 Forward 7.5 mph 12.1 km/h Less
4 Forward 10.1 mph 16.3 km/h Less
5 Forward 13.6 mph 21.9 km/h Less
6 Forward 18.2 mph 29.3 km/h Less
7 Forward 24.2 mph 38.9 km/h Less
8 Forward 32.0 mph 51.5 km/h Less
Reverse 5.7 mph 9.2 km/h Less
Travel Speed Maximum 32.0 mph 51.5 km/h Less

Hydraulics

Bowl Cylinder Bore 6.0 in 152.0 mm Less
Bowl Cylinder Stroke 32.0 in 813.0 mm Less
Apron Cylinder Bore 7.25 in 184.0 mm Less
Apron Cylinder Stroke 23.5 in 597.0 mm Less
Ejector Cylinder Bore 6.5 in 165.0 mm Less
Ejector Cylinder Stroke 61.0 in 1549.0 mm Less
Steering Circuit 55.0 gal/min 209.0 L/min Less
Scraper Circuit 72.1 gal/min 273.0 L/min Less
Cushion Hitch Circuit 9.8 gal/min 37.0 L/min Less
Secondary Steering Circuit 52.0 gal/min 147.0 L/min Less
Relief Valve - Steering Circuit 2250.0 psi 15500.0 kPa Less
Relief Valve - Implement Circuit 2175.0 psi 15000.0 kPa Less
Compensator Setting - Cushion Hitch Circuit 2175.0 psi 16000.0 kPa Less

Steering

Width - 180° Turn 35.9 ft 10.9 m Less
Steering Angle - Right 90° 90° Less
Steering Angle - Left 85° 85° Less
Hydraulic Output 55.0 gal/min 209.0 L/min Less

Service Refill Capacities - Tractor

Crankcase 10.0 gal 38.0 L Less
Transmission 18.0 gal 68.0 L Less
Differential 32.0 gal 121.0 L Less
Final Drive (per side) 5.3 gal 20.0 L Less
Cooling System 14.0 gal 73.0 L Less
Hydraulic Reservoir 33.0 gal 125.0 L Less
Wheel Coolant (each) 12.0 gal 45.0 L Less
Windshield Washer 1.5 gal 6.0 L Less

Dimensions

Width - rear tire center lines 86.6 in 2200.0 mm Less
Front of Tractor to Front Axle 120.4 in 3058.0 mm Less
Rim radius 17.0 in 432.0 mm Less
Axle to Vertical Hitch Pin 17.0 in 432.0 mm Less
Wheelbase 304.0 in 7722.0 mm Less
Length - overall machine 508.5 in 12917.0 mm Less
Rear Axle to Rear of Machine 84.3 in 2142.0 mm Less
Width - overall machine 136.5 in 3467.0 mm Less
Width - tractor 123.2 in 3130.0 mm Less
Width - inside of bowl 116.0 in 2946.0 mm Less
Width - outside rear tires 120.0 in 3048.0 mm Less
Height - overall shipping 145.9 in 3705.0 mm Less
Height - top of cab 134.8 in 3423.0 mm Less
Ground Clearance, Tractor 21.8 in 553.0 mm Less
Height - scraper blade max. 20.6 in 522.0 mm Less

Weights - Standard, tandem

Total Shipping 72455.0 lb 32865.0 kg Less
Tractor Shipping 49994.0 lb 22677.0 kg Less
Scraper Shipping 22461.0 lb 10118.0 kg Less
Total Operating - empty 73789.0 lb 33470.0 kg Less
Front Axle 50176.0 lb 22760.0 kg Less
Rear Axle 23612.0 lb 10710.0 kg Less
Total Operating - loaded 126589.0 lb 57420.0 kg Less
Front Axle Weight - loaded 67092.0 lb 30433.0 kg Less
Rear Axle Weight - loaded 59497.0 lb 26987.0 kg Less

Weights

Operating Weight 124590.0 lb 56513.0 kg Less

Power Train - Engine

Proven components are electronically integrated to achieve new levels of performance and efficiency.


Power Train - Transmission

Integrated electronics allows the machine to monitor the power train, which reduces stress as well as provides a better ride to the operator.


Electronic Controls

Instant response optimizes machine performance, and advanced diagnostic capabilities maximize machine availability.


Operator Station

Redesigned for enhanced operator comfort and productivity.


Structures

Superior structural design and construction optimize performance and reliability.


Scraper Bowl

Designed for optimum loading, material retention and ejection.


Serviceability

Count on Caterpillar for simplified service and the most productive uptime.


Customer Support

Cat dealer services help you operate longer with lower costs.


621G Standard Equipment

ELECTRICAL
  • Alarm, backup
  • Alternator, 75 amp - tractor engine
  • Batteries (4), 12V Maintenance Free, High Output
  • Electrical System, 24V
  • Lighting System - Tractor
  • Lighting System - Scraper
  • Starting Receptacle - tractor and scraper engines

OPERATOR ENVIRONMENT
  • Air Conditioner (includes heater and defroster)
  • Cigarette Lighter and Ashtray
  • Coat Hook
  • Diagnostic Connection Port (12V)
  • Dome Courtesy Light
  • Gauge Group
  • Horn
  • Implement Control Joystick
  • Rearview Mirrors
  • Radio Ready (two radio bays, speakers, and 5-amp converter)
  • ROPS Cab with Sound Suppression and Pressurization
  • Static Seatbelt
  • Seat, Air Suspension, Caterpillar Comfort, cloth
  • Steering Wheel - tilt and telescoping
  • Storage Compartment
  • Throttle Lock
  • Transmission Hold
  • Windows - sliding side, swing out
  • Windshield - laminated glass
  • Windshield Wiper/Washer - front and rear

POWER TRAIN
  • Engine
  • Braking System
  • Transmission

OTHER STANDARD EQUIPMENT
  • Air dryer
  • Cushion hitch
  • Extended Life Coolant, -36°C (-33°F)
  • Fast Oil Change
  • Fenders
  • Locks, vandalism protection
  • Product Link ready
  • Rims - 29 in (736.6 mm)
  • Tires - 33.25-R29 radial
  • Tow Pins - front and rear

621G Optional Equipment

621G
  • Fenders, scraper 121 kg (266 lb)
  • Fuel system, fast-fill 10 kg (23 lb)
  • Heater, engine coolant 2 kg (4 lb)
  • Lights, side vision 5 kg (10 lb)
  • Retarder, hydraulic 150 kg (330 lb)
  • Steering, secondary 50 kg (110 lb)

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Integrated technology can help you understand your equipment's output and help extend its lifespan.

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