- Overall Length: 42.42 ft / 12917 mm
- Overall Width: 11.42 ft / 3467 mm
- Overall Height: 12.17 ft / 3705 mm
- Wheelbase: 25.42 ft / 7722 mm
Published dimensions and weight
Caterpillar 621G
Weighing roughly 56.5 t and rated at 365 hp, the Caterpillar 621G is a motor scraper in its size class.
01Published dimensions and weight
Dimensions reference
Measurement reference — not to scale
01Dimensions referenceLength × width × height
02Operating Weight124590 lb56513.1 kg
03Selected published values120
Motor scrapers are commonly used to cut, load, haul and spread soil over medium-distance earthmoving cycles. Published rows for Caterpillar 621G include published payload of 52800 lb / 23950 kg, published body capacity of 22 yd3 / 17 m3, published engine power of 393 hp / 293 kw. These values describe the published configuration; verify the specific machine's configuration, attachments and records.
- Compare the published “Overall Length” field (42.42 ft / 12917 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Width” field (11.42 ft / 3467 mm) with the specific machine's configuration and records; options and condition can differ.
- Compare the published “Overall Height” field (12.17 ft / 3705 mm) with the specific machine's configuration and records; options and condition can differ.
02Specifications
Published values, clearly grouped.
Published specifications and measurements are organized by section for quick reference.
Dimensions
Overall Length42.42 ft12917 mm
Overall Width11.42 ft3467 mm
Overall Height12.17 ft3705 mm
Wheelbase25.42 ft7722 mm
Tractor Ground Clearance1.83 ft553 mm
Height To Top Of Cab11.25 ft3423 mm
Length - Overall Machine508.5 in12915.9 mm
Rear Axle - Rear Of Machine84.3 in2141.22 mm
Rim Radius17 in431.8 mm
Wheel Base25.34 in0.65 m
Width - Inside Of Bowl116 in2946.4 mm
Width - Outside Rear Tires120 in3048 mm
Width - Overall Machine136.5 in3467.1 mm
Width - Rear Tire Center Lines86.6 in2199.64 mm
Axle To Vertical Hitch Pin17 in431.8 mm
Width - Tractor123.2 in3129.28 mm
Front Of Tractor To Front Axle120.4 in3058.16 mm
Ground Clearance - Tractor21.8 in553.72 mm
Height - Overall Shipping145.9 in3705.86 mm
Height - Scraper Blade Maximum20.6 in523.24 mm
Height - Top Of Cab11.24 in0.29 m
Tractor Engine
MakeCaterpillarCaterpillar
ModelC15 ACERTC15 ACERT
Gross Power393 hp293 kw
Net Power365 hp272 kw
Displacement1098 cu in18 L
Net Power - Gears 1-2330 hp246.1 kw
Gross Power - Gears 1-2359 hp267.8 kw
Caterpillar Net Power330 hp246.1 kw
Iso 9249330 hp246.1 kw
Eec 80/1269330 hp246.1 kw
Sae J1349326 hp243.1 kw
Bore5.7 in144.8 mm
Stroke7.2 in182.9 mm
Net Power - Gears 3-8365 hp272.2 kw
Gross Power - Gears 3-8394 hp293.9 kw
Net Power - Tractor/Scraper246 kW (330 hp)246 kW (330 hp)
Engine
Tractor EngineCat C15 ACERTCat C15 ACERT
Operational
Fuel Capacity160 gal606 L
Cooling System Fluid Capacity28 gal107 L
Engine Oil Fluid Capacity9.5 gal36 L
Transmission Fluid Capacity19 gal72 L
Differential Fluid Capacity38 gal144 L
Hydraulic System Fluid Capacity37 gal140 L
Wheel Coolant Fluid Capacity - Each12 gal45 L
Operating Voltage24 V24 V
Alternator Supplied Amperage75 amps75 amps
Tire Size33.25-R2933.25-R29
Transmission
Transmission Type8-speed automatic Powershift with Electronic Control8-speed automatic Powershift with Electronic Control
Number Of Forward Gears88
Number Of Reverse Gears11
Max Speed Forward32 mph51.5 km/h
Max Speed Reverse5.7 mph9.2 km/h
Reverse5.7 mile/h5.7 mile/h
1 Forward3.2 mph5.2 km/h
2 Forward5.8 mph9.4 km/h
3 Forward7.5 mph12.1 km/h
4 Forward10.1 mph16.3 km/h
5 Forward13.6 mph21.9 km/h
6 Forward18.2 mph29.3 km/h
7 Forward24.2 mph39 km/h
8 Forward32 mph51.5 km/h
Travel Speed - Maximum32 mph51.5 km/h
Steering
Width - 180 Degrees Turn35.9 ft11 m
Steering Angle - Right90 degrees90 degrees
Steering Angle - Left85 degrees85 degrees
Hydraulic Output55 gal/min55 gal/min
Weights
Total Operating - Empty73788.8 lb33470 kg
Operating Weight124590 lb56513.1 kg
Front Axle - Empty50177.3 %50177.2076 %
Rear Axle - Empty23611.6 %23611.5067 %
Total Operating - Loaded126589.5 lb57420 kg
Front Axel - Loaded67093.3 lb30433 kg
Rear Axle - Loaded59496.2 %59496.1468 %
Bowl
Rated Payload52800 lb23950 kg
Heaped Capacity22 yd317 m3
Struck Capacity15.7 yd312 m3
Max Depth Of Cut13.1 in333 mm
Width Of Cut9.2 ft3023 mm
Hydraulics
Bowl Cylinder Bore6 in152.4 mm
Bowl Cylinder Stroke32 in812.8 mm
Steering Circuit55 gal/min55 gal/min
Scraper Circuit72.1 gal/min72.1 gal/min
Cushion Hitch Circuit9.8 gal/min9.8 gal/min
Relief Valve - Steering Circuit2250 psi2250 psi
Relief Valve - Implement Circuit2175 psi2175 psi
Compensator Settings - Cushion Hitch Circuit2175 psi2175 psi
Ejector Cylinder Bore6.5 in165.1 mm
Ejector Cylinder Stroke61 in1549.4 mm
Secondary Steering Circuit52 gal/min52 gal/min
Apron Cylinder Bore7.3 in184.2 mm
Apron Cylinder Stroke23.5 in596.9 mm
Scraper Bowl
Capacity Heaped22 yd316.9 m3
Width - Cut - To Router Bits119 in3022.6 mm
Rated Load52800 lb23949.7 kg
Capacity - Struck15.7 yd312.1 m3
Depth Of Cut - Maximum13.1 in332.8 mm
Ground Clearance - Maximum20.6 in523.3 mm
Cutting Edge Thickness0.9 in22.4 mm
Depth Of Spread - Maximum20.4 in518.2 mm
Apron Closure Force24075 lb10920.3 kg
Apron Opening70 in1778 mm
Hyd. Penetration Force119600 lb54249.7 kg
Service Refill Capacities - Tractor
Transmission18 gal68.2 L
Differential32 gal121.2 L
Final Drive - Each5.3 gal20.1 L
Cooling System14 gal53 L
Hydraulic Reservoir33 gal125 L
Crankcase10 gal37.9 L
Wheel Coolant - Each12 gal45.5 L
Windshield Washer1.5 gal5.7 L
Weights - Standard, Tandem
Total Shipping72455 lb32865.1 kg
Tractor Shipping49994 lb22676.9 kg
Scraper Shipping22461 lb10188.2 kg
Total Operating - Empty73789 lb33470.2 kg
Front Axle50176 lb22759.5 kg
Rear Axle23612 lb10710.3 kg
Total Operating - Loaded126589 lb57419.9 kg
Front Axle Weight - Loaded67092 lb30432.5 kg
Rear Axle - Weight - Loaded59497 lb26987.4 kg
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Manufacturer-published specifications.