Komatsu GD521A-1 Motor Grader

Contents

Dimensions
Engine Details
Operational Specs
Steering
Transmission
Front Axle
Moldboard

Dimensions

Overall Length	26.78 ft in (8160 mm)
Width Over Tires	7.86 ft in (2395 mm)
Wheelbase	18.97 ft in (5780 mm)
Rear Ground Clearance	1.19 ft in (360 mm)
Tandem Axle Wheelbase	5.04 ft in (1535 mm)
Blade Base	8.34 ft in (2540 mm)
Height To Top Of Isomount Cab	11.44 ft in (3485 mm)

Engine Details

Number Of Cylinders	6
Engine Make	Komatsu
Engine Model	S6D105
Power Measured @	2500 rpm
Net Power Gear 5-6	135.5 hp (101 kw)
Max Power	135.5 hp (101 kw)
Displacement	396.1 cu in (6.5 L)

Operational Specs

Std Operation Weight – Total	23810 lb (10800 kg)
Fuel Tank Capacity	60 gal (227 L)
Tire Size	13.00-24-8PR

Steering

Articulation Angle	27 degrees
Turning Radius	21.7 ft in (6.6 m)

Transmission

Number Of Gears – Forward	6
Max Speed – Forward	27.8 mph (44.6 km/h)
Max Speed – Reverse	33.9 mph (54.4 km/h)

Front Axle

Ground Clearance

1.2 ft in (360 mm)

Moldboard

Moldboard Width	12.2 ft in (3710 mm)
Moldboard Height	25.4 in (645 mm)

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