CAT 621G Motor Scraper


Dimensions

Overall Length 42.42 ft in (12917 mm)
Overall Width 11.42 ft in (3467 mm)
Overall Height 12.17 ft in (3705 mm)
Wheelbase 25.42 ft in (7722 mm)
Tractor Ground Clearance 1.83 ft in (553 mm)
Height To Top Of Cab 11.25 ft in (3423 mm)
Length – Overall Machine 508.5 in (12915.9 mm)
Rear Axle – Rear Of Machine 84.3 in (2141.22 mm)
Rim Radius 17 in (431.8 mm)
Wheel Base 25.34 ft in (0.65 m)
Width – Inside Of Bowl 116 in (2946.4 mm)
Width – Outside Rear Tires 120 in (3048 mm)
Width – Overall Machine 136.5 in (3467.1 mm)
Width – Rear Tire Center Lines 86.6 in (2199.64 mm)
Axle To Vertical Hitch Pin 17 in (431.8 mm)
Width – Tractor 123.2 in (3129.28 mm)
Front Of Tractor To Front Axle 120.4 in (3058.16 mm)
Ground Clearance – Tractor 21.8 in (553.72 mm)
Height – Overall Shipping 145.9 in (3705.86 mm)
Height – Scraper Blade Maximum 20.6 in (523.24 mm)
Height – Top Of Cab 11.24 ft in (0.29 m)

Tractor Engine

Make CAT
Model C15 ACERT
Gross Power 393 hp (293 kw)
Net Power 365 hp (272 kw)
Displacement 1098 cu in (18 L)

Engine Details

Tractor Engine Cat C15 ACERT

Tractor Engine

Net Power – Gears 1-2 330 hp (246.1 kw)
Gross Power – Gears 1-2 359 hp (267.8 kw)
CAT Net Power 330 hp (246.1 kw)
Iso 9249 330 hp (246.1 kw)
Eec 80/1269 330 hp (246.1 kw)
Sae J1349 326 hp (243.1 kw)
Bore 5.7 in (144.8 mm)
Stroke 7.2 in (182.9 mm)
Net Power – Gears 3-8 365 hp (272.2 kw)
Gross Power – Gears 3-8 394 hp (293.9 kw)
Net Power – Tractor/Scraper 246 kW (330 hp)

Operational Specs

Fuel Tank Capacity 160 gal (606 L)
Cooling System Fluid Capacity 28 gal (107 L)
Engine Oil Fluid Capacity 9.5 gal (36 L)
Transmission Fluid Capacity 19 gal (72 L)
Differential Fluid Capacity 38 gal (144 L)
Hydraulic System Fluid Capacity 37 gal (140 L)
Wheel Coolant Fluid Capacity – Each 12 gal (45 L)
Operating Voltage 24 V
Alternator Supplied Amperage 75 amps
Tire Size 33.25-R29

Transmission

Transmission Type 8-speed automatic Powershift with Electronic Control
Number Of Forward Gears 8
Number Of Reverse Gears 1
Max Speed Forward 32 mph (51.5 km/h)
Max Speed Reverse 5.7 mph (9.2 km/h)
Reverse 5.7 mile/h

Steering

Width – 180 Degrees Turn 35.9 ft in (11 m)
Steering Angle – Right 90 degrees
Steering Angle – Left 85 degrees
Hydraulic Output 55 gal/min

Transmission

1 Forward 3.2 mph (5.2 km/h)
2 Forward 5.8 mph (9.4 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 18.2 mph (29.3 km/h)
7 Forward 24.2 mph (39 km/h)
8 Forward 32 mph (51.5 km/h)
Travel Speed – Maximum 32 mph (51.5 km/h)

Weights

Total Operating – Empty 73788.8 lb (33470 kg)
Operating Weight 124590 lb (56513.1 kg)
Front Axle – Empty 50177.3 % (50177.2076 %)
Rear Axle – Empty 23611.6 % (23611.5067 %)
Total Operating – Loaded 126589.5 lb (57420 kg)
Front Axel – Loaded 67093.3 lb (30433 kg)
Rear Axle – Loaded 59496.2 % (59496.1468 %)

Bowl

Rated Payload 52800 lb (23950 kg)
Heaped Capacity 22 yd3 (17 m3)
Struck Capacity 15.7 yd3 (12 m3)
Max Depth Of Cut 13.1 in (333 mm)
Width Of Cut 9.2 ft in (3023 mm)

Hydraulics

Bowl Cylinder Bore 6 in (152.4 mm)
Bowl Cylinder Stroke 32 in (812.8 mm)
Steering Circuit 55 gal/min
Scraper Circuit 72.1 gal/min
Cushion Hitch Circuit 9.8 gal/min
Relief Valve – Steering Circuit 2250 psi
Relief Valve – Implement Circuit 2175 psi
Compensator Settings – Cushion Hitch Circuit 2175 psi
Ejector Cylinder Bore 6.5 in (165.1 mm)
Ejector Cylinder Stroke 61 in (1549.4 mm)
Secondary Steering Circuit 52 gal/min
Apron Cylinder Bore 7.3 in (184.2 mm)
Apron Cylinder Stroke 23.5 in (596.9 mm)

Scraper Bowl

Capacity Heaped 22 yd3 (16.9 m3)
Width – Cut – To Router Bits 119 in (3022.6 mm)
Rated Load 52800 lb (23949.7 kg)
Capacity – Struck 15.7 yd3 (12.1 m3)
Depth Of Cut – Maximum 13.1 in (332.8 mm)
Ground Clearance – Maximum 20.6 in (523.3 mm)
Cutting Edge Thickness 0.9 in (22.4 mm)
Depth Of Spread – Maximum 20.4 in (518.2 mm)
Apron Closure Force 24075 lb (10920.3 kg)
Apron Opening 70 in (1778 mm)
Hyd. Penetration Force 119600 lb (54249.7 kg)

Service Refill Capacities – Tractor

Transmission 18 gal (68.2 L)
Differential 32 gal (121.2 L)
Final Drive – Each 5.3 gal (20.1 L)
Cooling System 14 gal (53 L)
Hydraulic Reservoir 33 gal (125 L)
Crankcase 10 gal (37.9 L)
Wheel Coolant – Each 12 gal (45.5 L)
Windshield Washer 1.5 gal (5.7 L)

Weights – Standard, Tandem

Total Shipping 72455 lb (32865.1 kg)
Tractor Shipping 49994 lb (22676.9 kg)
Scraper Shipping 22461 lb (10188.2 kg)
Total Operating – Empty 73789 lb (33470.2 kg)
Front Axle 50176 lb (22759.5 kg)
Rear Axle 23612 lb (10710.3 kg)
Total Operating – Loaded 126589 lb (57419.9 kg)
Front Axle Weight – Loaded 67092 lb (30432.5 kg)
Rear Axle – Weight – Loaded 59497 lb (26987.4 kg)
Ask a question