John Deere 120 Excavator Specs, Price Weight, & Review ❤️

John Deere 120 Excavator Specs, Price, Weight, Overview,dig dept, Attachments, Horsepower & Review

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John Deere 120 Excavator Overview

It has powerful power and smoothness and comfort similar to more powerful John Deere excavators, the 120D surpasses all expectations. With powerful digging forces and a remarkable lift capacity as well as reach and swinging torque.

It performs similarly to large machines. It functions like them as well, with a large comfortable cabin that has ample legroom as well as unbeatable visibility.

John Deere 120 Excavator

John Deere 120 Excavator  Price New

Price: USD $51,500

John Deere 120 Excavator Weight

Operating Weight: 26790 lbs (12,152 kg)

John Deere 120 Excavator dig depth

Maximum digging depth of :17 ft. 10 in. (5.445 m)

John Deere 120 Excavator Horsepower

John has a 120 diesel engine that produces: 90 hp (67 kw)

John Deere 120 Excavator Engine oil capacity

Engine Oil Capacity, 3.5 gal (11 l)

John Deere 120 Excavator  Specifications


Bore 4.1 in (10 cm)
Emissions U.S. EPA Tier 4 Final/EU Stage IV – U.S. EPA Tier 3/EU Stage IIIA
Aspiration Turbocharged
Displacement 427.8 cu in (0 m)
Engine Model Cat 7.1
Max Torque 260 lbs/ft
Power Measured @ 2200 rpm
Torque Measured @ 1400 rpm
Net Power 90 hp (67 kw)
Stroke 5.3 in (13 cm)


Height – Top of Cab 9 ft (3 m)
Removal Counterweight Clearance 3 ft (1 m)
Width to Outside of Tracks 8.5 ft (2 m)
Ground Clearance 1.3 ft (0 m)
Length of Track on Ground 9.5 ft (3 m)
Tail Swing Radius 6.9 ft (2 m)


Reference Bucket Capacity 1.1 cu yds (1 m)

Boom/Stick Excavator Option 1

Max Digging Depth 17.9 ft (5 m)
Max Reach Along Ground 26.4 ft (8 m)
Shipping Height of Unit 8.8 ft (2 m)
Max Cutting Height 27.7 ft (8 m)
Max Loading Height 20.6 ft (6 m)
Max Vertical Wall Digging Depth 16 ft (5 m)
Shipping Length of Unit 24.9 ft (7 m)

Boom/Stick Excavator Option 2

Max Digging Depth 19.5 ft (6 m)
Max Reach Along Ground 27.1 ft (8 m)
Shipping Height of Unit 8.8 ft (2 m)
Max Cutting Height 28.8 ft (9 m)
Max Loading Height 21.7 ft (6 m)
Max Vertical Wall Digging Depth 17.6 ft (5 m)
Shipping Length of Unit 25 ft (8 m)

Operating Specifications

Cooling System Fluid Capacity 5.9 gal (19 l)
Fuel Capacity 66 gal (250 l)
Hydraulic System Fluid Capacity 35 gal (132 l)
Operating Voltage 24 V
Swing Drive Fluid Capacity 0.8 gal (0 l)
Alternator Supplied Amperage 45 A
Engine Oil Capacity 3.5 gal (11 l)
Hydraulic Pump Flow Capacity 26.7 gal/min (98 l/min)
Hydraulic System Relief Valve Pressure 4980 psi
Operating Weight 26790 lbs (12,152 kg)

Service Refill Capacities

Fuel Tank 65 gal (246 l)
Cooling System 14 gal (53 l)

Swing Mechanism

Swing Speed 12.7 rpm


Ground Pressure 4.6 psi
Number of Carrier Rollers per Side 1
Number of Track Rollers per Side 7
Track Gauge 6.6 ft (2 m)
Drawbar Pull 22050 lbs (10,002 kg)
Max Travel Speed 3.4 mph (5 kph)
Number of Shoes per Side 44
Shoe Size 23.7 in (58 cm)

John Deere 120 Excavator Review

John Deere 120 Problems and Solutions 

Engine performance problem

The majority of excavators are liquid-cooled. A radiator and a fan are required to cool the engine. To cool the engine, the fan must pull cool air through a radiator.

An electric motor controls the cooling fan. The engine can overheat and stop working if one of these components fails.

You may have the fan motor stuck on or off. Both can cause coolant loss and engine overheating. Caterpillar machines use a thermistor to control when the fan turns on or off.

Relay also controls the excitation voltage for the cooling fan electric motor. It is possible for your machine to overheat if either one of these units fails.

Engine runs rough or low power

A faulty fuel injection pump can cause the john deere 120 excavator to run rough or have low power. It is necessary to remove the pump and rebuild it.

Some pumps have a pin stuck in the rack housing. The pin can be easily removed so that the pump functions properly.

Another possible cause is the governor. The idle cam of the governor can wear, which can cause the engine to run rough at idle.

This part can become worn and make it difficult to adjust the timing of injection. This will lead to engine performance problems. This part should be replaced as soon as possible.

Hydraulic System problems

After a long period of service, seals and O rings on parts can wear and leak oil or hydraulic fluid. This could lead to reduced working pressure and even failure. The accumulator pressure has dropped to a low level.

The gas could be released, damaged, or evaporated from long-term usage. First, check if the accumulator seal is damaged and if there is oil leakage at the joint of the cylinder head. If none of the above is present, it’s time to replace it with an oil-gas separator.

John Deere 120 Excavator Attachments

John Deere 120 Excavator

Our various excavator attachments include the following:

  • Augers & Auger Bits
  • Backhoe Buckets
  • Backhoe Rippers
  • Blades
  • Bobcat X-Change Buckets & Attachments
  • Booms / Sticks
  • Brush Cutters / Mowers
  • Brush Rakes
  • Crawler / Dozer Rippers & Shanks
  • Hydraulic Hammers/Breakers
  • Hydraulic Vibratory Plate Compactors
  • Loader Buckets
  • Loader Quick Changes & Adapters


This concludes our coverage of the John Deere 120 Excavator excavator price, specifications, review, and key features. If you have any questions about this post, please leave them in the comment section below, and we will get back to you as soon as possible.

John Deere 120 Excavator – FAQs

john deere 120 excavator

Q.1 How much does a 120 John Deere excavator weight?

✔ 26790 lbs (12,152 kg)

Q.2 How big is a John Deere 120 excavator?

✔ John Deere 120 Hydraulic Excavator Details:
From Top Of Cab to : 8.93 ft . >> Width To Outside Of Tracks: 8.5 ft in. >> Length Of Track On Ground: 9.45 ft in. Tail Swing Radius = 6.89 ft.

Q. 3 How much can a 120 excavator lift?

✔ Lift Capacity . . . . . . . . . . 2615 kg (5, 766 lb.) Digging Depth . . . . . . . .17 ft. 10 in. (5.445 m)


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