- Category: Wheel Loaders ➔
- Manufacturer: Case ➔
- Model: 521D ➔
The Case 521D is a wheel loader designed for material handling, loading, and general construction applications. Part of Case's D Series, it is built for use in aggregate yards, agriculture, municipal work, and jobsite material movement. The 521D typically features a diesel engine, articulated steering, hydraulic lift and bucket functions, and an operator cab configured for visibility and control. Common attachments and bucket options support tasks such as stockpiling, truck loading, and site cleanup. The model is used in environments that require maneuverability, moderate lifting capacity, and reliable cycle performance in compact to mid-size loader operations.
Bucket
| Breakout Force | 20,951.00 lbs (9,503.23 kg)
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| Bucket Capacity - heaped | 2.50 cu yd (1.91 cu m)
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| Bucket Capacity - struck | 2.20 cu yd (1.68 cu m)
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| Bucket Width | 8.10 ft (2.47 m)
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| Dump Clearance at Max Raise | 9.10 ft (2.77 m)
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Dimensions
| Ground Clearance | 1.30 ft (0.40 m)
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| Height - Top of Cab | 10.50 ft (3.20 m)
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| Hinge Pin - Max Height | 11.90 ft (3.63 m)
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| Length with Bucket on Ground | 22.10 ft (6.74 m)
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| Reach at Max Lift and Dump | 3.50 ft (1.07 m)
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| Wheelbase | 9.10 ft (2.77 m)
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| Width Over Tires | 7.60 ft (2.32 m)
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Engine
| Aspiration | Turbocharged and Aftercooled
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| Displacement | 275.00 cu in (4,506.45 cu cm)
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| Engine Model | Family III 445TA/M2 Tier II certified
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| Gross Power | 119.00 hp (88.74 kw)
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| Net Power | 110.00 hp (82.03 kw)
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| Number of Cylinders | 4
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| Power Measured @ | 2000 rpm
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| Torque Measured @ | 1400 rpm
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| Torque Rise | 14%
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Hydraulic System
| Dump Time | 1.1 seconds
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| Lower Time | 3.7 seconds
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| Pump Flow Capacity | 35.40 gpm (133.99 lpm)
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| Pump Type | closed centered pressure/flow compensated
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| Raise Time | 5.6 seconds
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| Relief Valve Setting | 2750 psi
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Operating Specifications
| Alternator Supplied Amperage | 70 amps
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| Cooling System Fluid Capacity | 5.80 gal (21.95 l)
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| Engine Oil Fluid Capacity | 3.40 gal (12.87 l)
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| Front Axle/Diff Fluid Capacity | 5.90 gal (22.33 l)
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| Fuel Capacity | 50.00 gal (189.25 l)
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| Hydraulic System Fluid Capacity | 30.00 gal (113.55 l)
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| Operating Voltage | 24 volts
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| Operating Weight | 22,109.00 lbs (10,028.49 kg)
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| Rear Axle Oscillation | 24 degrees
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| Rear Axle/Diff Fluid Capacity | 5.90 gal (22.33 l)
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| Static Tipping Weight | 18,424.00 lbs (8,357.00 kg)
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| Tire Size | 17.5x25
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| Transmission Fluid Capacity | 5.00 gal (18.93 l)
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| Turning Radius | 16.30 ft (4.97 m)
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Transmission
| Max Speed - Forward | 23.40 mph (37.66 kph)
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| Max Speed - Reverse | 15.20 mph (24.46 kph)
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| Number of Forward Gears | 4
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| Number of Reverse Gears | 3
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| Transmission Type | 4F/3R Proportional w/ Electronic Control Module torque sensing autoshift/manual shift and modulation
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