Technical Description
The Case 521D is a durable and versatile wheel loader with a turbocharged and aftercooled Family III 445TA/M2 Tier II certified engine delivering 119 hp gross power and 110 hp net power at 2000 rpm. It features a 275 cu in, 4-cylinder engine with a torque rise of 14% and peak torque of 336 lb-ft at 1400 rpm. The loader is equipped with a 2.5 cubic yard heaped capacity bucket, 8.1 ft wide, and a breakout force of 20,951 lbs, providing excellent digging and loading performance. The bucket’s dump clearance reaches 9.1 ft at maximum raise, and the hinge pin height maxes out at 11.9 ft, aiding high lift and efficient dumping.
Operating dimensions include a length of 22.1 ft with the bucket on the ground, width over tires of 7.6 ft, height to cab top at 10.5 ft, and a wheelbase of 9.1 ft. Ground clearance is 1.3 ft, and the turning radius is 16.3 ft, enabling good maneuverability. The machine weighs 22,109 lbs with a static tipping weight of 18,424 lbs.
Hydraulics operate via a closed-centered, pressure/flow-compensated pump with a 35.4 gal/min flow rate at 2,750 psi relief pressure, achieving dump, raise, and lower times of 1.1, 5.6, and 3.7 seconds, respectively. The transmission offers 4 forward and 3 reverse gears with electronic control and torque-sensing autoshift, supporting a maximum forward speed of 23.4 mph and 15.2 mph in reverse. Fuel capacity is 50 gallons with additional fluid capacities supporting engine oil, hydraulic system, and transmission to maintain reliable operation.
