- Category: Excavators ➔
- Manufacturer: Caterpillar ➔
- Model: 321D LCR ➔
The Caterpillar 321D LCR is a hydraulic excavator in Caterpillar's 321D series, designed with a reduced tail swing configuration for work in confined spaces. It is used in construction, utility, roadwork, and site development applications where maneuverability is important. The machine is equipped with a Caterpillar diesel engine, hydraulic digging system, and an operator cab configured for excavation and material handling tasks. The 321D LCR typically supports a range of buckets and attachments for trenching, grading, and loading. Its compact rear profile helps reduce interference with surrounding structures while maintaining digging performance for general earthmoving operations.
Boom/Stick Excavator Option 1
| Max Cutting Height | 36 ft (11 m)
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| Max Digging Depth | 22 ft (7 m)
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| Max Loading Height | 26 ft (8 m)
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| Max Reach Along Ground | 32 ft (10 m)
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| Max Vertical Wall Digging Depth | 19 ft (6 m)
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| Shipping Height of Unit | 10 ft (3 m)
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| Shipping Length of Unit | 29 ft (9 m)
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Boom/Stick Excavator Option 2
| Max Cutting Height | 35 ft (11 m)
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| Max Digging Depth | 21 ft (6 m)
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| Max Loading Height | 25 ft (8 m)
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| Max Reach Along Ground | 31 ft (9 m)
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| Max Vertical Wall Digging Depth | 18 ft (5 m)
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| Shipping Height of Unit | 10 ft (3 m)
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| Shipping Length of Unit | 29 ft (9 m)
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Bucket
| Maximum Bucket Capacity | 2 cu yd (2 cu m)
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| Reference Bucket Capacity | 1 cu yd (1 cu m)
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Dimensions
| Ground Clearance | 2 ft (0 m)
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| Height - Top of Cab | 10 ft (3 m)
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| Length of Track on Ground | 12 ft (4 m)
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| Removal Counterweight Clearance | 2 ft (0 m)
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| Shipping Height | 10 ft (3 m)
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| Tail Swing Radius | 6 ft (2 m)
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| Transport Width | 11 ft (3 m)
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| Width to Outside of Tracks | 10 ft (3 m)
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DRIVE SYSTEM
| Maximum Drawbar Pull | 46,311 lbs (21,006 kg)
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Engine
| Bore | 4 in (10 cm)
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| Displacement | 389 cu in (6,375 cu cm)
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| Engine Model | Cat C6.4 ACERT
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| Net Power | 148 hp (110 kw)
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| Net Power - EEC 80/1269 | 148 hp (110 kw)
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| Net Power - ISO 9249 | 148 hp (110 kw)
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| Net Power - SAE J1349 | 148 hp (110 kw)
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| Stroke | 5 in (13 cm)
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Hydraulic System
| Boom Cylinder - Bore | 5 in (12 cm)
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| Boom Cylinder - Stroke | 50 in (126 cm)
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| Main Implement System - Maximum Flow (2x) | 54 gpm (204 lpm)
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| Maximum Pressure - Equipment | 5076 psi
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| Maximum Pressure - Swing | 3626 psi
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| Maximum Pressure - Travel | 5076 psi
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Operating Specifications
| Alternator Supplied Amperage | 50 amps
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| Cooling System Fluid Capacity | 7 gal (25 l)
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| Engine Oil Capacity | 8 gal (30 l)
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| Fuel Capacity | 87 gal (329 l)
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| Hydraulic Pump Flow Capacity | 54 gpm (204 lpm)
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| Hydraulic System Fluid Capacity | 55 gal (208 l)
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| Hydraulic System Relief Valve Pressure | 5076 psi
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| Operating Voltage | 24 volts
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| Operating Weight | 51,875 lbs (23,530 kg)
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| Swing Drive Fluid Capacity | 2 gal (8 l)
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Service Refill Capacities
| Cooling System | 7 gal (25 l)
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| Engine Oil | 8 gal (30 l)
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| Final Drive - Each | 2 gal (8 l)
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| Fuel Tank Capacity | 87 gal (329 l)
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| Hydraulic System - Including Tank | 55 gal (208 l)
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| Hydraulic Tank | 32 gal (121 l)
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| Swing Drive | 2 gal (8 l)
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Standards
| Brakes | SAE J1026 APR90
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| Cab/FOGS | SAE J1356 FEB88
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Swing Mechanism
Track
| Number of Carrier Rollers - Each Side - Long Undercarriage | 2
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| Number of Shoes - Each Side - Long Undercarriage | 49
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| Number of Track Rollers - Each Side - Long Undercarriage | 8
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Undercarriage
| Drawbar Pull | 46,311 lbs (21,006 kg)
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| Max Travel Speed | 4 mph (6 kph)
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| Number of Carrier Rollers per Side | 2
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| Number of Shoes per Side | 49
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| Number of Track Rollers per Side | 8
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| Shoe Size | 24 in (61 cm)
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Weights
| Operating Weight | 51,875 lbs (23,530 kg)
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| Operating Weight - Long Undercarriage | 51,875 lbs (23,530 kg)
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| Operating Weight - Standard Undercarriage | 51,875 lbs (23,530 kg)
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