The JCB JS120 fills the 12-tonne category in our heavy tracked excavators range. It boasts great efficiency, strength and  ease of maintenance.

An extremely tough boom and dipper is mounted onto a robust undercarriage, ensuring that the JS120 is fit for the very toughest tasks. To keep downtime to a minimum, we’ve made sure this 360 excavator has plenty of features to prolong both service intervals and engine life.


Maximum Engine Power
Maximum Bucket Capacity
Maximum Operating Weight

Best In Class Performance

Excellent bucket and dipper tear out force result in high output and faster completion
of work, especially in hard strata.

JCB’s innovative hydraulic regeneration
system recycles hydraulic oil across the cylinders for faster cycle times and reduced
fuel consumption.

The advanced hydraulic system also ensures excellent multifunction performance resulting in higher output levels.

Best in Fuel efficiency

JCB ecoMAX engine designed especially for construction equipment provides high fuel efficiency and generates high torque at low speeds to suit various job needs

Choice of Productivity (P) & Economy (E) modes:

E: Economy mode - For fuel saving with optimum productivity.
P: Productivity mode - Increased productivity through pump flow when higher output is required.

Auto idler for fuel saving during engine idling at high speeds.

Ease of Service

Compact and easy to handle bonnet is assisted by gas strut that helps in easy opening and closing. It makes periodic maintenance easy and effortless.

Easy to access periodic check points. Wire mesh provided to avoid clogging of radiator & oil cooler. Cooler unit air-conditioner is hinged for easy access to radiator & cooler unit for cleaning.

Boom end pivot bushes need to be greased at 1000 hrs thereby reducing maintenance costs and increasing machine uptime.

Low Maintenance Cost

Air pre-cleaner assembly filters dust particles and helps in increasing life of air filter elements and life of the engine.

Special filtration system extends hydraulic life up to 5000 hrs with the hydraulic main return filter change intervals of 1000 hrs, which reduces maintenance costs

High capacity fuel pre-filter with water separator - To increase life of fuel system components.

Most Reliable

Hard faced bucket : Usage of hardox steel for optional heavy duty hard faced bucket with reinforced hanger plates. Together they ensure long life with provisionfor bolt-on side cutters.
Durable upper frame : Ruggedconstruction of upper frame provides durability in tough working conditions .

Heavy duty X-frame with belly guard at the bottom comes as a standard fitment . Reinforced boom : Deep section design for high strength.

Reinforced base area and cylinder mounting area for higher strength.