621 Partial Scraper

621 Partial Wheel Tractor-Scraper

Caterpillar offers partial wheel tractor-scraper power units designed for specialty machines that complement the traditional Cat® product line. These tractor-only configurations are available for purchase directly from Caterpillar OEM Solutions. They can be leveraged for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more

621

DESCRIPTION

Caterpillar offers partial wheel tractor-scraper power units designed for specialty machines that complement the traditional Cat® product line. These tractor-only configurations are available for purchase directly from Caterpillar OEM Solutions. They can be leveraged for a variety of final machines, including water pulls, elevating scrapers, lowboy trailer power units, and more. With improvements in productivity combined with enhancements in operator comfort and new safety features – Powered Access System and effective wet disc brakes – this machine offers high returns on time and investment.

Features

  • WORK IN COMFORT

    • Steer with less effort with the newly designed high-pressure steering system.
    • Enjoy interior improvements and a more ergonomic work environment.
    • Intuitive, ergonomic controls with multifunction display keep operators focused on their work.
    • Maintain desired cab temperature with automatic temperature control.

  • EASY TO OPERATE

    • Cat Advanced Ride Management (ARM) seat suspension reduces end stroke movement of the load cylinder for a smoother ride.
    • Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine speed by canceling the throttle command and engaging the engine compression brake.

  • BE MORE PRODUCTIVE

          
    • The Advanced Productivity Electronic Control System (APECS) allows the machine to better utilize engine power and torque.
      •     
    • Set the desired top speed with Ground Speed Control, and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn in speed reduced areas.
      •     
    • The Machine Speed Limit feature replaces Top Gear Selection.
      •     
    • Auto-Stall assists in quickly bringing the transmission to an operating temperature at start-up when working in colder climates.

  • DESIGNED FOR SAFETY

    • Get in and out of the cab easier with the new powered access ladder system.
    • Enhance the operator’s awareness of site surroundings with the optional Work Area Vision System (WAVS).
    • Ground-level access to fuel fill and several maintenance points for easier and safer service.
    • Seat belt indicator provides visual and audible alerts when the seat belt is not in use.
    • Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear.
    • Secondary brakes engage automatically if service pressure drops
    • Parking Brake features a spring-applied, hydraulic pressure released mechanism that operates the service brakes.

  • SUPPORTED BY THE CAT DEALER NETWORK

    • Full support of Cat dealer and parts network.
    • Eligible for Equipment Protection Plans (EPP) & Customer Value Agreements (CVAs).

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • POWERTRAIN
    • Cat® C13 engine with Mechanically Actuated Electronic Unit Injection (MEUI™)
    • Transmission: 8-speed planetary powershift, ECPC control, APECS software, programmable top gear selection, transmission hold, differential lock, guard - power train, ground speed control, machine speed limit
    • Cat engine brake
    • Electric start, 24V
    • Fan, hydraulic
    • Ground level engine shutdown
    • Guard, crankcase
    • Starting aid, ether
    • Braking system: primary and secondary, wet disc, hydraulic; parking, hydraulic-released, spring-applied
  • ELECTRICAL
    • Alternator, 115 ampere
    • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Lighting system: LED
    • Starting/charging receptacle
  • OPERATOR ENVIRONMENT
    • HVAC system, heat, AC, defrost
    • Thermostat control of HVAC system
    • Coat hook
    • Lunchbox platform with holding strap
    • Diagnostic connection (2)
    • 12V power ports (2)
    • Differential lock
    • Dome courtesy light
    • Horn, electric
    • T-handle implement control
    • Radio ready
    • ROPS/FOPS cab, pressurized
    • Keypad switches: rear engine start; throttle lock; wipers/washers; hazard lights; worklights on, off; information mode; messenger display; safety tab rocker switches, parking brake
    • Seat belt, static two-piece
    • Windows, sliding
    • Windshield wipers, front and rear windows, includes washers
    • Windows, laminated, zipped in
    • Mirror, rearview
    • Door lock
    • Messenger display gauges, warnings include: coolant temp; engine oil temp; hydraulic oil temp; DPF temp; fuel level; park brake; implement lockout; brake system, regeneration required; throttle lock; system voltage; secondary steering; bail down; differential lock; apron float; transmission hold; high beam lights; action lamp; engine speed, rpm; gear selection; DPF fill levels
    • Safety tab rocker switches
    • Seat: Cat Advanced Ride Management (ARM), Cat Comfort Series III, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Windows, right side emergency egress
    • Messenger display
  • FLUIDS
    • Extended life coolant to -37° C (-34° F)
  • OTHER EQUIPMENT
    • Advanced cushion hitch
    • Accumulators (cushion hitch and brake) with Canadian registration number (CRN)
    • Tow pin, front
    • Fenders, non-metallic
    • Heater, engine coolant 120V
  • OTHER ATTACHMENTS
    • Fast-fill fuel tank

Optional Equipment

  • OTHER ATTACHMENTS
    • Camera arrangement: Work Area Vision System (WAVS)
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Kingbolt housing
    • Rear wheel arrangement (set of 2)
    • Scraper draft arm package
    • Steering cylinder group (set of 2)

Specs

Overview

Long Name:
621 Partial Wheel Tractor-Scraper
Name:
621 Partial Scraper
Brand:
Cat
Status:
Current

Engine

Tractor Engine
Cat® C13
Flywheel Power - Tractor
407 hp / 304 kW
Note
Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.

Transmission

Top Speed - Loaded
33.5 mile/h / 53.9 km/h
1 Forward
3.1 mile/h / 5 km/h
2 Forward
5.5 mile/h / 8.9 km/h
3 Forward
7.5 mile/h / 12.1 km/h
4 Forward
10.1 mile/h / 16.3 km/h
5 Forward
13.6 mile/h / 21.9 km/h
6 Forward
18.4 mile/h / 29.6 km/h
7 Forward
24.8 mile/h / 39.9 km/h
8 Forward
33.5 mile/h / 53.9 km/h
Reverse
5.7 mile/h / 9.2 km/h

Steering

Width - 180° Turn
38.6 ft / 11.8 m

Standards

Brakes
ISO 3450:2011
ROPS/FOPS
ROPS: ISO 3471:2008 for up to 17 084 kg (37,664 lb). FOPS: ISO 3449:2005 Level II.
Cab
Seat Belt: SAE J386:JUN1985

Service Refill Capacities - Tractor

Fuel Tank
216.1 gal (US) / 818 l
Crankcase
9.7 gal (US) / 37 l
Transmission
25.5 gal (US) / 97 l
Differential
41.7 gal (US) / 158 l
Final Drive - Each
5 gal (US) / 19 l
Cooling System
11 gal (US) / 42 l
Hydraulic Reservoir
21.9 gal (US) / 83 l
Windshield Washer
1.3 gal (US) / 5 l

SEE HOW 621 Partial Scraper COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.

Partial Scrapers
621 Partial Scraper
621
Brand
Cat
Status
Current
Tractor Engine
Cat® C13
Note
Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Top Speed - Loaded
33.5 mile/h / 53.9 km/h
1 Forward
3.1 mile/h / 5 km/h
2 Forward
5.5 mile/h / 8.9 km/h
3 Forward
7.5 mile/h / 12.1 km/h
4 Forward
10.1 mile/h / 16.3 km/h
5 Forward
13.6 mile/h / 21.9 km/h
6 Forward
18.4 mile/h / 29.6 km/h
7 Forward
24.8 mile/h / 39.9 km/h
8 Forward
33.5 mile/h / 53.9 km/h
Reverse
5.7 mile/h / 9.2 km/h
Brakes
ISO 3450:2011
ROPS/FOPS
ROPS: ISO 3471:2008 for up to 17 084 kg (37,664 lb). FOPS: ISO 3449:2005 Level II.
Cab
Seat Belt: SAE J386:JUN1985
Fuel Tank
216.1 gal (US) / 818 l
Crankcase
9.7 gal (US) / 37 l
Transmission
25.5 gal (US) / 97 l
Differential
41.7 gal (US) / 158 l
Final Drive - Each
5 gal (US) / 19 l
Cooling System
11 gal (US) / 42 l
Hydraulic Reservoir
21.9 gal (US) / 83 l
Windshield Washer
1.3 gal (US) / 5 l
Selected Model
Partial Scrapers
651 Partial Scraper
651
Brand
Cat
Status
Current
Tractor Engine
Cat® C18
Note
Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Top Speed - Loaded
34.9 mile/h / 56.1 km/h
1 Forward
3.5 mile/h / 5.7 km/h
2 Forward
6.5 mile/h / 10.5 km/h
3 Forward
7.8 mile/h / 12.5 km/h
4 Forward
10.6 mile/h / 17 km/h
5 Forward
14.2 mile/h / 22.8 km/h
6 Forward
19.2 mile/h / 30.9 km/h
7 Forward
25.7 mile/h / 41.4 km/h
8 Forward
34.9 mile/h / 56.1 km/h
Reverse
6.7 mile/h / 10.8 km/h
Brakes
ISO 3450:2011
ROPS/FOPS
ROPS: ISO 3471:2008 for up to 26 600 kg (58,643 lb). FOPS: ISO 3449:2005 Level II
Cab
Seat Belt: SAE J386:AUG2012
Fuel Tank
430.1 gal (US) / 1628 l
Crankcase
10 gal (US) / 38 l
Transmission
35.9 gal (US) / 136 l
Differential
36 gal (US) / 136 l
Final Drive - Each
6 gal (US) / 29.5 l
Cooling System
23.4 gal (US) / 88.6 l
Hydraulic Reservoir
39.6 gal (US) / 150 l
Windshield Washer
0.5 gal (US) / 5 l
More Details
Partial Scrapers
631 Partial Scraper
631
Brand
Cat
Status
Current
Tractor Engine
Cat® C18
Note
Meets U.S. EPA Tier 4 Final or EU Stage V emission standards, or equivalent to U.S. EPA Tier 2, or equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
Top Speed - Loaded
34.7 mile/h / 55.8 km/h
1 Forward
3.4 mile/h / 5.5 km/h
2 Forward
6.2 mile/h / 10 km/h
3 Forward
7.7 mile/h / 12.4 km/h
4 Forward
10.5 mile/h / 16.9 km/h
5 Forward
14.1 mile/h / 22.7 km/h
6 Forward
19 mile/h / 30.6 km/h
7 Forward
25.7 mile/h / 41.4 km/h
8 Forward
34.7 mile/h / 55.8 km/h
Reverse
6.2 mile/h / 9.9 km/h
Brakes
ISO 3450:2011
ROPS/FOPS
ROPS: ISO 3471:2008. FOPS:ISO 3449:2005 Level II.
Cab
Seat Belt: SAE J386:FEB2006
Fuel Tank
231 gal (US) / 874 l
Crankcase
13.7 gal (US) / 52 l
Transmission
29 gal (US) / 110 l
Differential
41.7 gal (US) / 158 l
Final Drive - Each
5 gal (US) / 19 l
Cooling System
19.8 gal (US) / 142 l
Hydraulic Reservoir
37.5 gal (US) / 83 l
Windshield Washer
1.3 gal (US) / 5 l
More Details