CAT 621H Motor Scraper

Engine Details

Tractor Cat C13 ACERT
Maximum Power 407 hp (303.5 kw)

Tractor Engine

Flywheel Power – Tractor/Scraper 304 kW (407 hp)

Transmission

Reverse 5.7 mile/h

Steering

Steering Angle – Right 85
Steering Angle – Left 82

Transmission

1 Forward 3.1 mph (5 km/h)
2 Forward 5.5 mph (8.9 km/h)
3 Forward 7.5 mph (12.1 km/h)
4 Forward 10.1 mph (16.3 km/h)
5 Forward 13.6 mph (21.9 km/h)
6 Forward 18.4 mph (29.7 km/h)
7 Forward 24.8 mph (40 km/h)
8 Forward 33.5 mph (54 km/h)
Top Speed – Loaded 33.5 mph (54 km/h)

Standards

Standards Standards

Hydraulics

Bowl Cylinder Bore 5.5 in (139.7 mm)
Bowl Cylinder Stroke 33.3 in (845.9 mm)
Ejector Cylinder Bore 5.5 in (139.7 mm)
Ejector Cylinder Stroke 61 in (1549.4 mm)
Steering Cylinder – Bore 5 in (127 mm)
Steering Cylinder – Stroke 44.4 in (1127.8 mm)
Cushion Hitch Cylinder Bore 5.5 in (139.7 mm)
Cushion Hitch Cylinder Stroke 9.9 in (251.5 mm)
Steering Circuit Flow 61.8 gal/min
Secondary Steering Circuit Flow 10.3 gal/min
Scraper Circuit Flow 66 gal/min
Cushion Hitch Circuit Flow 10.6 gal/min
Apron Cylinder Bore 5.9 in (149.9 mm)
Apron Cylinder Stroke 22.2 in (563.9 mm)
Push/Pull Bail Cylinder Bore 3.5 in (88.9 mm)
Push/Pull Bail Cylinder Stroke 16.3 in (414.1 mm)

Scraper Bowl

Rated Load 57600 lb (26127 kg)
Scraper Capacity – Heaped 24 yd3 (18.4 m3)
Heaped Capacity 24 yd3 (18.4 m3)
Struck Capacity 17.1 yd3 (13.1 m3)
Maximum Depth Of Cut 12.4 in (315 mm)
Width – Cut – Outside Router Bits 123.5 in (3136.9 mm)
Maximum Ground Clearance At Cutting Edge 23.4 in (594.4 mm)
Thickness – Cutting Edge 0.9 in (22.9 mm)
Maximum Hydraulic Penetration Force 130390 lb (59144 kg)
Maximum Depth Of Spread 21.3 in (541.1 mm)
Maximum Apron Opening 69.6 in (1767.9 mm)
Maximum Apron Closure Force 50580 lb (22942.8 kg)

Service Refill Capacities – Scraper

Non-Powered Wheel 1.1 gal (4.2 L)
Fuel Tank Capacity 201.6 gal (763.2 L)

Service Refill Capacities – Tractor

Engine Crankcase 8.8 gal (33.2 L)
Transmission 18.5 gal (70.1 L)
Differential 45.8 gal (173.4 L)
Final Drive – Each 5 gal (19 L)
Cooling System 17 gal (64.4 L)
Hydraulic Reservoir 22 gal (83.3 L)
Windshield Washer Reservoir 1.3 gal (5 L)

Tractor Engine – Prior U.S. Epa Tier 3/Eu Stage Iiia Configuration*

Tractor Engine Cat C13 ACERT
Maximum Power – All Gears – Iso 14396 407 hp (303.5 kw)
Maximum Power Reference Engine Speed 1700 rpm
Displacement 763 cu in (12.6 L)
Bore 5.1 in (129.6 mm)
Stroke 6.2 in (157.5 mm)

Tractor Engine – U.S. Epa Tier 4 Interim/Eu Stage Iiib

Tractor Engine Cat C13 ACERT
Maximum Power – All Gears – Iso 14396 407 hp (303.5 kw)
Maximum Power Reference Engine Speed 1700 rpm
Displacement 763 cu in (12.6 L)
Bore 5.1 in (129.6 mm)
Stroke 6.2 in (157.5 mm)

Weights – Machines Achieving Prior U.S. Epa Tier 3/Eu Stage Iiia Emission Levels

Standard – Shipping Weight – 10% Fuel 77735 lb (35260.1 kg)
Standard – Operating Weight – Full Fuel Tanks 79230 lb (35938.2 kg)
Standard – Loaded, Based On A Rated Load 136830 lb (62065.1 kg)
Push-Pull – Shipping Weight – 10% Fuel 80502 lb (36515.1 kg)
Push-Pull – Operating Weight – Full Fuel Tanks 81996 lb (37192.8 kg)
Push-Pull – Loaded – Based On A Rated Load 135597 lb (61505.8 kg)

Weights – Machines Meeting U.S. Epa Tier 4 Interim/Eu Stage Iiib Emission Standards

Standard – Shipping Weight – 10% Fuel 78279 lb (35506.8 kg)
Standard – Operating Weight – Full Fuel Tanks 79774 lb (36184.9 kg)
Standard – Loaded, Based On A Rated Load 137374 lb (62311.9 kg)
Push-Pull – Shipping Weight – 10% Fuel 81090 lb (36781.9 kg)
Push-Pull – Operating Weight – Full Fuel Tanks 82541 lb (37440 kg)
Push-Pull – Loaded – Based On A Rated Load 141141 lb (64020.5 kg)
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