Caterpillar 320

Name: Caterpillar 320
Brand: Caterpillar

Configuration: Long undercarriage, HD Reach boom 5.7 m, HD R2.9B1 (9'6") stick, HD 1.19 m³ bucket, 3700 kg counterweight, 700 mm triple grouser shoes; Tier 4 Final/Stage V (AEXQ3755-01).

24 sourced values · Sources: Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24

Check trailer fit Download CSV

Dimension diagram

A	Overall length	9,530 mm
B	Overall height	3,160 mm
C	Track length on ground	3,650 mm
D	Ground clearance	470 mm
E	Overall width	3,080 mm
F	Track gauge / tread	2,380 mm
G	Shoe / track width	700 mm

Weights

Spec	Value	Source
Operating weight	22,200 kg	Published: 22,200 kg Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 700 mm shoes, 3700 kg counterweight, long UC, HD Reach boom, R2.9 stick, 1.19 m³ HD bucket; 90% fuel, 75 kg operator.

Dimensions

Spec	Value	Source
Overall length	9,530 mm	Published: 9,530 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Shipping length with boom/stick/bucket installed, R2.9B1 stick.
Overall width	3,080 mm	Published: 3,080 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Undercarriage width with 700 mm shoes. Upperframe width 2,780 mm.
Overall height	3,160 mm	Published: 3,160 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Shipping height with boom/stick/bucket installed, R2.9B1. Top of cab 2,960 mm.
Transport height	Not captured	—
Track gauge / tread	2,380 mm	Published: 2,380 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24
Track length on ground	3,650 mm	Published: 3,650 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Length to center of rollers.
Track length (overall)	4,450 mm	Published: 4,450 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24
Shoe / track width	700 mm	Published: 700 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Triple grouser. Options 600/790 mm.
Ground clearance	470 mm	Published: 470 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24
Tail swing radius	2,830 mm	Published: 2,830 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24

Undercarriage / tires

Spec	Value	Source
Undercarriage type	Crawler (steel tracks), long undercarriage	Published: Crawler (steel tracks), long undercarriage Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24
Track rollers / shoes per side	8 track rollers, 2 carrier rollers, 49 shoes per side	Published: 8 track rollers, 2 carrier rollers, 49 shoes per side Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24

Ground pressure

Spec	Value	Source
Ground pressure	39.6 kPa	Published: 39.6 kPa Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 700 mm shoes, 3700 kg counterweight config.

Engine

Spec	Value	Source
Engine model	Cat C4.4 ⚠ Printed as C4.4, but the printed bore, stroke and displacement match the C7.1. See data notes.	Published: Cat C4.4 Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 As printed; see review_note (bore/stroke/displacement match C7.1). U.S. EPA Tier 4 Final / EU Stage V / Japan 2014.
Net power	128.5 kW	Published: 128.5 kW Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 ISO 9249 (172 hp) at 2,200 rpm. ISO 14396: 129.4 kW.
Gross power	Not captured	—
Displacement	7.01 L	Published: 7.01 L Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 As printed (428 in³).
Rated speed	2,200 rpm	Published: 2,200 rpm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24

Hydraulics

Spec	Value	Source
Pump / aux flow	429 L/min	Published: 429 L/min Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Main system maximum flow, implement (2 x 215 L/min).
System / relief pressure	≈ 35 MPa	Published: 35,000 kPa Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Maximum pressure, equipment, normal.

Performance

Spec	Value	Source
Max digging depth	6,720 mm	Published: 6,720 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 R2.9B1 stick.
Max reach (at ground)	9,860 mm	Published: 9,860 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 R2.9B1 stick.
Dump height / clearance	6,490 mm	Published: 6,490 mm Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Maximum loading height, R2.9B1 stick.
Breakout / digging force	141 kN	Published: 141 kN Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Bucket digging force (ISO), R2.9B1. Auto Dig Boost 153 kN. Stick 107 kN.
Max travel speed	5.7 km/h	Published: 5.7 km/h Cat 320 Hydraulic Excavator Technical Specifications AEXQ3755-01 (11-2025), U.S. EPA Tier 4 Final/EU Stage V (current North American-market sheet). Retrieved 2026-10-24 Maximum travel speed.

Similar models

Brand	Model	Operating weight
HD Hyundai	HX210A L	22,150 kg
Volvo	EC210	22,150 kg
Link-Belt	220 X4S	22,300 kg
Liebherr	R 922 Litronic	22,450 kg
Volvo	EC220E (EC220EL)	21,740 kg
Case	CX220E	22,700 kg

Compare side by side with HD Hyundai HX210A L and Volvo EC210

Head-to-head

Caterpillar 320 vs Komatsu PC210LC-11