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 job sites. It is commonly used in construction, utility, roadwork, and site preparation applications where maneuverability is important. The machine is equipped with a Caterpillar diesel engine, hydraulic digging system, and an operator cab configured for visibility and control. The 321D LCR supports a range of buckets and attachments for excavation, trenching, and material handling. Its compact rear profile helps reduce contact risk in restricted areas while maintaining the performance expected from a mid-size excavator.
Boom/Stick 1
Caterpillar 321D LCR Excavator Boom/Stick 1 specifications
Boom/Stick 1
Boom 18\'7\" (5680mm) / Stick 9\'7\" (2900mm) -Reach
Max Cutting Height
36.08 ft (11.00 m)
Max Digging Depth
22.00 ft (6.71 m)
Max Loading Height
25.92 ft (7.90 m)
Max Reach Along Ground
32.08 ft (9.78 m)
Max Vertical Wall Digging Depth
19.33 ft (5.89 m)
Shipping Height Of Unit
9.92 ft (3.02 m)
Shipping Length Of Unit
29.17 ft (8.89 m)
Boom/Stick 2
Caterpillar 321D LCR Excavator Boom/Stick 2 specifications
Boom/Stick 2
Boom 18\'7\" (5680mm) / Stick 8\'2\" (2500mm) -Reach
Max Cutting Height
35.17 ft (10.72 m)
Max Digging Depth
20.67 ft (6.30 m)
Max Loading Height
24.92 ft (7.60 m)
Max Reach Along Ground
30.83 ft (9.40 m)
Max Vertical Wall Digging Depth
18.00 ft (5.49 m)
Shipping Height Of Unit
9.92 ft (3.02 m)
Shipping Length Of Unit
29.17 ft (8.89 m)
Buckets
Caterpillar 321D LCR Excavator Buckets specifications
Maximum Bucket Capacity
2.1 cu yd
Reference Bucket Capacity
1.4 cu yd
Dimensions
Caterpillar 321D LCR Excavator Dimensions specifications
Ground Clearance
1.50 ft (0.46 m)
Height
9.92 ft (3.02 m)
Height To Top Of Cab
9.75 ft (2.97 m)
Length
29.17 ft (8.89 m)
Length Of Track On Ground
11.98 ft (3.65 m)
Removal Counterweight Clearance
1.48 ft (0.45 m)
Shipping Height
9.90 ft (3.02 m)
Tail Swing Radius
5.50 ft (1.68 m)
Transport Width
10.44 ft (3.18 m)
Weight
51,875.00 lbs (23,530.13 kg)
Width
10.42 ft (3.18 m)
Width To Outside Of Tracks
9.75 ft (2.97 m)
Drive
Caterpillar 321D LCR Excavator Drive specifications
Maximum Drawbar Pull
46,311.00 lbs (21,006.34 kg)
Maximum Travel Speed
3.50 mph (5.63 kph)
Engine
Caterpillar 321D LCR Excavator Engine specifications
Bore
4.10 in (10.41 cm)
Displacement
389.00 cu in (6,374.58 cu cm)
Engine Make
2236
Engine Model
C6.4 ACERT
Net Flywheel Power
148.00 hp (110.37 kw)
Net Power
148.00 hp (110.37 kw)
Net Power - Eec 80/1269
148.00 hp (110.37 kw)
Net Power - Iso 9249
148.00 hp (110.37 kw)
Net Power - Sae J1349
148.00 hp (110.37 kw)
Stroke
5.20 in (13.21 cm)
Hydraulic System
Caterpillar 321D LCR Excavator Hydraulic System specifications
B1 Family Bucket Cylinder - Bore
4.70 in (11.94 cm)
B1 Family Bucket Cylinder - Stroke
43.50 in (110.49 cm)
Boom Cylinder - Bore
4.70 in (11.94 cm)
Boom Cylinder - Stroke
49.60 in (125.98 cm)
Main Implement System - Maximum Flow (2x)
54.00 gpm (204.39 lpm)
Maximum Pressure - Equipment
5076 psi
Maximum Pressure - Heavy Lift
5221 psi
Maximum Pressure - Swing
3626 psi
Maximum Pressure - Travel
5076 psi
Pilot System - Maximum Flow
9.00 gpm (34.07 lpm)
Pilot System - Maximum Pressure
566 psi
Reach Stick Cylinder - Bore
5.50 in (13.97 cm)
Reach Stick Cylinder - Stroke
59.80 in (151.89 cm)
Operational
Caterpillar 321D LCR Excavator Operational specifications
Alternator Supplied Amperage
50 amps
Cooling System Fluid Capacity
6.60 gal (24.98 l)
Engine Oil Capacity
8.00 gal (30.28 l)
Fuel Capacity
87.00 gal (329.30 l)
Hydraulic Pump Flow Capacity
54.00 gpm (204.39 lpm)
Hydraulic System Fluid Capacity
55.00 gal (208.18 l)
Hydraulic System Relief Valve Pressure
5076 psi
Operating Voltage
24 V
Operating Weight
51,875.00 lbs (23,530.13 kg)
Swing Drive Fluid Capacity
2.10 gal (7.95 l)
Service Refill Capacities
Caterpillar 321D LCR Excavator Service Refill Capacities specifications
Cooling System
6.60 gal (24.98 l)
Engine Oil
8.00 gal (30.28 l)
Final Drive - Each
2.10 gal (7.95 l)
Fuel Tank Capacity
87.00 gal (329.30 l)
Hydraulic System - Including Tank
55.00 gal (208.18 l)
Hydraulic Tank
32.00 gal (121.12 l)
Hydraulic Tank - Including Suction Pipe
35.00 gal (132.48 l)
Swing Drive
2.10 gal (7.95 l)
Sound Performance
Caterpillar 321D LCR Excavator Sound Performance specifications
Performance
ANSI/SAE J1166 APR 90
Standards
Caterpillar 321D LCR Excavator Standards specifications
Brakes
SAE J1026 APR90
Cab/Fogs
SAE J1356 FEB88
Swing Mechanism
Caterpillar 321D LCR Excavator Swing Mechanism specifications
Swing Speed
11.5 rpm
Swing Torque
45,612.00 lbs ft (61,840.75 nm)
Track
Caterpillar 321D LCR Excavator Track specifications
Number Of Carrier Rollers - Each Side - Long Undercarriage
2
Number Of Shoes - Each Side - Long Undercarriage
49
Number Of Track Rollers - Each Side - Long Undercarriage
8
Undercarriage
Caterpillar 321D LCR Excavator Undercarriage specifications
Drawbar Pull
46,311.00 lbs (21,006.34 kg)
Max Travel Speed
3.50 mph (5.63 kph)
Number Of Carrier Rollers Per Side
2
Number Of Shoes Per Side
49
Number Of Track Rollers Per Side
8
Shoe Size
24.00 in (60.96 cm)
Weights
Caterpillar 321D LCR Excavator Weights specifications
Operating Weight
51,875.00 lbs (23,530.13 kg)
Operating Weight - Long Undercarriage
51,875.00 lbs (23,530.13 kg)
Operating Weight - Long Undercarriage 2
53,308.00 lbs (24,180.13 kg)
Operating Weight - Standard Undercarriage
51,875.00 lbs (23,530.13 kg)
