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621K Wheel Tractor-Scraper

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Product Description

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.

Specifications
Us
Metric
General
Maximum Depth of Cut
12.4 in
315 mm
Maximum Depth of Spread
21.3 in
540 mm
180° Curb-to-Curb Turning Width
38.71 ft
11.8 m
Scraper Capacity - Struck
17.1 yd³
13 m³
Tires - Scraper
33.25R29**E3
Overall Width
11.71 ft
3.57 m
Overall Shipping Height
13.22 ft
4.03 m
Width - Cut
10.3 ft
3.14 m
Tires - Tractor Drive
33.25R29**E3
Top Speed - Loaded
33.5 mile/h
53.9 km/h
Fuel Tank Refill Capacity - Scraper
201 gal (US)
763 l
Scraper Capacity - Heaped
24 yd³
18.4 m³
Rated Load
26 127 kg (57,610 lb); 26.19 tonnes (28.81 tons)
Engine
Rated Engine RPM - Tractor
2000 r/min
2000 r/min
Engine Model - Tractor
Cat C13
Flywheel Power - Tractor
407 hp
304 kW
Note
Cat C13 engine meets U.S. Environmental Protection Agency (EPA) Tier 4 Final/EU Stage IV engine emission standards.
Tractor Engine
Flywheel Power - Tractor/Scraper
304 kW (407 hp)
Scraper Bowl
Scraper Capacity - Heaped
24 yd³
18.4 m³
Transmission
Top Speed - Loaded
33.5 mile/h
53.9 km/h
Service Refill Capacities
Hydraulic System
21.926 gal (US)
83 l
Cooling System
11.89 gal (US)
45 l
Fuel Tank
216.09 gal (US)
818 l
Crankcase
8.08 gal (US)
30.58 l
Diesel Exhaust Fluid
8.057 gal (US)
30.5 l
Transmission System
24.76 gal (US)
93 l
Dimensions
Width - Overall Machine
141.1 in
3585 mm
Width - Tractor
133.1 in
3381 mm
Width - Inside of Bowl
120 in
3048 mm
Width - Outside Rear Tires
128.9 in
3275 mm
Height - Overall Shipping
158.6 in
4029 mm
Height - Top of Cab
142.2 in
3612 mm
Ground Clearance - Tractor
21.9 in
557 mm
Front of Tractor to Front Axle
122.8 in
3119 mm
Axle to Vertical Hitch Pin
21.3 in
540 mm
Height - Scraper Blade Maximum
20.5 in
520 mm
Wheel Base
314.9 in
7998 mm
Rear Axle - Rear of Machine
114.1 in
2898 mm
Length - Maximum (Push-Pull)
613.2 in
15576 mm
Length - Overall Machine - Standard
551.8 in
14015 mm
Width - Rear Tire Centers
90.2 in
2290 mm
Width - Overall Machine - Ladder Down
149.2 in
3790 mm
Non Push-Pull
Overall Length
45.9 ft
14.02 m
Operating Weight - Empty
79787 lb
36185 kg
Push-Pull
Operating Weight - Empty
80630 lb
36567 kg
Overall Length - With Bail Down
51.1 ft
15.58 m
Cab
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).
Safety Criteria Compliance Standards
Brakes
ISO 3450:1996
Seat Belt
SAE J386:JUN1985
Steering System
ISO 5010:2007
Reverse Alarm
ISO 9533:2010
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 17 084 kg (37,664 lb)
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Travel Speeds - Runout
Transmission Gear - Sixth
18.4 mile/h
29.6 km/h
Transmission Gear - Fifth
13.6 mile/h
21.9 km/h
Transmission Gear - Reverse
5.7 mile/h
9.2 km/h
Transmission Gear - Second
5.5 mile/h
8.9 km/h
Transmission Gear - Third
7.5 mile/h
12.1 km/h
Transmission Gear - First
3.1 mile/h
5 km/h
Transmission Gear - Eighth
33.5 mile/h
53.9 km/h
Transmission Gear - Fourth
10.1 mile/h
16.3 km/h
Transmission Gear - Seventh
24.8 mile/h
39.9 km/h
Implement Cycle Times
Bail Lower
3.2 s
3.2 s
Bail Raise
1.8 s
1.8 s
Apron Lower
3.8 s
3.8 s
Apron Raise
2.95 s
2.95 s
Ejector Extend
5.2 s
5.2 s
Ejector Retract
6.7 s
6.7 s
Bowl Raise
3 s
3 s
Bowl Lower
3.5 s
3.5 s
Standard/Optional

Standard Equipment

NOTE
POWER TRAIN - TRACTOR
POWER TRAIN - SCRAPER
ELECTRICAL - TRACTOR
ELECTRICAL - SCRAPER
OPERATOR ENVIRONMENT - TRACTOR
FLUIDS
OTHER STANDARD EQUIPMENT - TRACTOR
OTHER STANDARD EQUIPMENT - SCRAPER

Optional Equipment

NOTE
STEERING ARRANGEMENTS
INTEGRATED TECHNOLOGIES
OTHER ATTACHMENTS
WORK LIGHT ATTACHMENTS
AMBIENT CAPABILITY ARRANGEMENTS
SERVICE INSTRUCTIONS
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