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  Wheel Loaders

  • Bobcat L28
  • Cat 926M
  • Case 221D
  • John Deere 304H
  • Doosan DL280-7
  • Case 521E
  • Kubota R070
  • John Deere 624J

Case 521D Specifications

The Case 521D wheel loader driveline system components: 238 cu.in (3.9L) Case 4TA-390 4-cylinder turbocharged liquid-cooled diesel engine with a rated power of 110 hp (82 kW), and 4x3 powershift transmission with single stage torque converter. The hydraulic system has a piston pump with a rated capacity of 35.4 gal/min (134 l/min). The Case 521D is equipped with a power steering system, hydraulic wet disc brakes, and 17.5x25 tires. The wheel loader has a maximum lift height to hinge pin of 142.1" (3610 mm) and boom breakout force of 18200 lbs (8255 kg). The rated operating capacity is 7115 lbs (3227 kg), and tipping load is 14230 lbs (6455 kg).

Engine Model .................... Case 4TA-390
Engine Type .................... 4-Stroke direct injection liquid-cooled diesel
Number of Cylinders .................... 4
Displacement, cu in (L) .................... 238 (3.90)
Engine Bore, in (mm) .................... 4.02 (102.0)
Engine Stroke, in (mm) .................... 4.72 (120.0)
Aspiration Type .................... Turbocharged
Rated Engine Power, hp (kW) .................... 110.0 (82.0)
Rated Engine Speed, rpm .................... 2000
Low Idle Speed, rpm .................... 1020-1080
High Idle Speed, rpm .................... 2220-2280
Maximum Torque, Nm (ft-lb) .................... 468 (345)
Torque Speed, rpm.................... 1400
Compression Ratio .................... 17.0:1
Firing Order .................... 1-3-4-2
Fuel System .................... Injection pump
Fuel Filter Type .................... Full flow spin-on cartridge
Governor Type .................... Mechanical
Lubricating System .................... Positive pressure
Cooling System .................... Liquid-cooled
Air Cleaner Type .................... Dry element
Fuel Tank Capacity, gal (L) .................... 50.0 (189.0)
Oil Capacity, qts (L) .................... 12.0 (11.3)
Coolant Capacity, qts (L) .................... 19.1 (18.2)
Electrical System Rating, Volts .................... 12
Charging System .................... Alternator
Alternator Rating, Amps .................... 45

Transmission Type .................... Powershift
Gearbox Type .................... 4F/3R
Number of Forward Gears .................... 4
Number of Reverse Gears .................... 3
Torque Converter Type .................... Single stage
Torque Converter Ratio .................... 2.55:1
Oil Capacity, gal (L) .................... 2.0 (7.6)
Maximum Forward Speed, mph (kph) .................... 24.1 (38.8)
Maximum Reverse Speed, mph (kph) .................... 15.6 (25.1)

Drive System Type .................... Four-wheel drive (4WD)
Steering Configuration .................... Articulated frame
Steering System .................... Hydrostatic power
Service Brakes Type .................... Hydraulic wet disc
Front Tire Size (Std) .................... 17.5x25
Rear Tire Size (Std) .................... 17.5x25
Front Tire Size (Opt) .................... 15.5x25
Rear Tire Size (Opt) .................... 15.5x25

Hydraulic System Type .................... Closed center
Hydraulic Pump Type .................... Variable displacement piston
Pump Capacity, gpm (Lpm) .................... 35.4 (134.0)
System Pressure, psi (Bar) .................... 2755 (190)
Hydraulic Reservoir Capacity, gal (L) .................... 15.0 (56.8)
Hydraulic System Capacity, gal (L) .................... 30.0 (113.6)

Rated Operating Capacity (Straight), lbs (kg) .................... 8490 (3850)
Rated Operating Capacity (Full Turn), lbs (kg) .................... 7115 (3227)
Tipping Load (Straight), lbs (kg) .................... 16980 (7700)
Tipping Load (Full Turn), lbs (kg) .................... 14230 (6455)
Lift Capacity, lbs (kg) .................... 12310 (5585)
Breakout Force, lbs (kg) .................... 18200 (8255)

Maximum Operating Height .................... 186.6 (4740)
Maximum Lift Height To Hinge Pin, in (mm) .................... 142.1 (3610)
Height To Top Of Cab, in (mm) .................... 124.9 (3175)
Length With Bucket On Ground, in (mm) .................... 264 (6705)
Width (Tread Center), in (mm) .................... 72.8 (1850)
Width (Over Tires), in (mm) .................... 92.1 (2340)
Wheel Base, in (mm) .................... 108.3 (2750)
Ground Clearance, in (mm) .................... 14.9 (375)
Departure Angle, deg .................... 34
Articulation Angle, deg .................... 40
Bucket Width, in (mm) .................... 97 (2460)
Bucket Capacity, cu.ft (m3) .................... 67.4 (1.91)
Digging Depth, in (mm) .................... 3.1 (77)
Rollback Angle At Ground, deg .................... 40
Rollback Angle At Full Height, deg .................... 54
Dump Angle At Full Height, deg .................... 50
Clearance With Bucket Dumped, in (mm) .................... 105.2 (2670)
Reach At Full Height, in (mm) .................... 41.6 (1055)
Turning Radius (w/Bucket), in (mm) .................... 194.8 (4945)
Operating Weight, lbs (kg) .................... 21600 (9800)

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Wheel Loaders, Skid Steers, and Compact Track Loaders