Key Takeaways
The Hitachi ZX120 is a 12–13 ton class hydraulic excavator widely used for construction, utility work, and light earthmoving. Fab Heavy Parts supports owners with quality aftermarket and OEM components.
- The Hitachi ZX120 weighs 12.5 tons, with compact transport dimensions that fit most lowboy trailers without special permits in many regions.
- Core specs include a fuel-efficient Isuzu diesel engine producing around 90–95 hp, a primary bucket capacity of 0.81 cubic meters, and a durable undercarriage with carrier rollers and track rollers built for daily jobsite use.
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The ZX120 series spans several generations-ZX120, ZX120-3, ZX120-5A, ZX120-6-and ZX120 specifications vary by model year and configuration, so buyers should always check the serial plate.
- Fab Heavy Parts at fabheavyparts.com can help source undercarriage, hydraulic pumps, swing motors, and filters for most ZX120 variants.
Introduction to the Hitachi ZX120 Excavator
The Hitachi ZX120 is a 12-ton class mid-size crawler hydraulic excavator first introduced in the early 2000s by Hitachi Construction Machinery, headquartered in Tokyo, Japan. Common across generations such as the ZX120-3, ZX120-5A, and ZX120-6, it is used for construction, utility, and light earthmoving work, with the compact transport size and jobsite range many contractors and operators want for trenching, site prep, loading trucks, small demolition, and municipal work.
The ZX120 is built for versatility and is popular in rental fleets. For buyers comparing machines, fleet managers planning maintenance, and owners sourcing replacement components, the key questions are specs, hydraulic and undercarriage design, attachment compatibility, real-world performance, service needs, and parts availability. Many contractors purchase used ZX120 excavators and rely on aftermarket parts from a company like Fab Heavy Parts to control costs, reduce downtime, and make better repair or purchase decisions.
Hitachi ZX120 Specs, Operating Weight, and Dimensions
Exact specifications vary between model generations and boom/arm options. The numbers below represent typical ranges for a standard ZX120 configuration.
Dimensions and operating weight:
- Operating weight: approximately 12,500 kg (~27,600 lbs). Some variants range from 12,000–12,800 kg depending on shoes and counterweight.
- Transport length: 7.61 meters (about 25 ft 0 in).
- Width: typically 2.45–2.50 m with 600–700 mm steel tracks.
- Height: around 2.70–2.80 m to the top of the cab.
- Track width: 700 mm shoe width is common, improving flotation and reducing ground pressure on soft terrain. Bolt on rubber pads are available for roadwork.
Engine and performance:
- Engine power sits in the 66–70 kW range (about 90–95 hp). The ZX120 features a fuel-efficient Isuzu diesel engine-an Isuzu four-cylinder turbo known for reliability when maintained with clean fuel and regular filter changes. Components like the bucket isuzu engine pins should be inspected at each service interval.
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The ZX120's engine speed adjusts automatically to reduce fuel use during lighter tasks, cutting fuel concumption on every shift.
- Maximum digging depth reaches 5.57 meters with a standard stick, while the maximum horizontal reach is 8.27 meters.
Bucket and lifting:
- The standard bucket capacity of the ZX120 ranges from approximately 0.35 to 0.80 cu. yd., and many sources list a primary bucket around 0.81 m³ with about 1.2 m width. Contractors often keep a std dig bucket, trench bucket, and rock bucket on hand. A std bucket or dig bucket paired with a quick attach coupler speeds tool changes on combined operations.
Understanding dimensions and operating weight matters for transport permitting, trailer selection, and jobsite access planning across various locations.
Undercarriage Design: Tracks, Carrier Rollers and Track Rollers
The ZX120 undercarriage is a conventional steel track crawler setup built for stability and traction in dirt, mud, and rock. Most machines use sealed and greased track chains with shoes sized for a balance of grip and low ground pressure. Some units run rubber track or rubber pads for urban sites to protect pavement. The excavator's design extends durability and reduces repair costs when the undercarriage is properly maintained.
- Carrier rollers support the top run of the chain and keep it aligned. A typical ZX120 has 1–2 carrier rollers per side. Watch for flat spots, noisy operation, or track sag-early replacement prevents cascading damage.
- Track rollers (bottom rollers): the ZX120 commonly uses 5-7 per side to carry the machine's weight. Worn track rollers cause uneven ride and accelerated shoe wear. A quick check-every 250 hours during service keeps problems small.
- Sprockets and idlers should be replaced as a set or planned over a short window to keep wear balanced.
The ZX120 is designed for easy maintenance with centralized service points. Fab Heavy Parts offers replacement carrier rollers, track rollers, idlers, and sprockets for most Hitachi ZX120 serial ranges-matching parts to a specific serial number is important because bolt patterns can change across ZX120-3, ZX120-5A, and ZX120-6 models.
Hydraulic System, Attachments, and Jobsite Performance
The ZX120 is a responsive hydraulic excavator known for smooth control, making it a reliable choice for operators who need both precision and power for tough jobs. The hydraulic system of the ZX120 supports multi-function movements through a load-sensing design with variable displacement pumps. The ZX120 features 4,000-hour hydraulic oil intervals and a 1,000-hour hydraulic oil filter replacement interval, which directly reduces downtime. This high-efficiency hydraulic system delivers smooth operation and better fuel efficiency compared to older constant-flow setups.
Common attachments include standard digging buckets, ditch cleaning buckets for slope finishing, hydraulic breakers, and thumbs with a pin grabber or pin grabber sn coupler. Auxiliary hydraulics and aux hydraulics plumbing on most ZX120 units support breakers and compactors-just verify flow and pressure before installation. A std stick or standard stick configuration handles most general excavation, while long-arm variants dig deeper at the cost of breakout force.
The operator cab of the ZX120 is designed for visibility and comfort, with air conditioning, ergonomic lever and joystick controls, and optional rearview and sideview cameras on newer ZX120-6 units. Sideview cameras and quieter cabs reduce operator fatigue on long shifts, helping the machine do more work through the day. Operators frequently praise the ZX120 for its reliability and uptime, and the Hitachi ZX120 has lower operating costs due to reduced fuel consumption across all working modes.
Buying, Maintaining, and Sourcing Parts for a Hitachi ZX120
A good clean, low hour excavator from the ZX120-5A era (roughly 2011–2016) can still deliver years of productive service. Whether you compare it against a doosan excavator, a komatsu, or other caterpillar models, these are durable machines that hold value well in the market.
Used ZX120 buying checklist:
- Inspect undercarriage wear: measure chain, carrier rollers, track rollers, idlers, sprockets, and shoes.
- Check hydraulic function: smooth boom, arm, and bucket movements without drift or chatter.
- Review engine condition and cold-start behavior—watch for smoke and leaks.
- Confirm electrical features: lights, gauges, switches, HVAC, and safety equipment.
Maintenance schedule highlights:
- Daily walk-around for leaks, loose track shoes, abnormal noise.
- 250–500 hour intervals for oil and fuel filters.
- Regular greasing of pins and bushings on boom, arm, and bucket to avoid costly line-boring.
Common wear parts include pins, bushings, bucket teeth, cutting edges, and swing bearing seals. Running with loose steel tracks accelerates roller and sprocket wear-keep tension correct.
Fab Heavy Parts cross-references OEM part numbers to quality aftermarket or genuine parts, helping customers manage repair budgets on equipment across the country. Hitachi has several units available across the country. We commonly supply undercarriage, hydraulic cylinders, seal kits, swing bearings, travel motors, filters, and cooling components for the ZX120 and similar excavators.
Ready to order? Visit fabheavyparts.com or contact our team with your ZX120 model and serial number for a tailored quote on parts. Whether you need a single bolt or a full undercarriage kit, we ship to customers at locations nationwide. Power through your next project with the right parts at the right price. Productivity on tight excellent schedules demands reliable supply-our website is built to help you purchase with confidence. Even during a heat thursday rush or peak construction season, we keep shipping fast to support your sale and service needs. The Hitachi ZX120 delivers max performance when backed by quality components, and that is exactly what our company provides to the heavy equipment market across every country we serve.
FAQ
Q1: What years was the Hitachi ZX120 produced?
A1: The original ZX120 began in the early 2000s. Updates like the ZX120-3 and ZX120-5A were developed and produced roughly through the mid-2010s, while the ZX120-6 and ZX120-7 are more recent. Always check the serial plate or consult a parts specialist before ordering components, as production years depend on sub-model and market-including china variants built for local demands.
Q2: Is the Hitachi ZX120 big enough for lifting pipe and structures?
A2: Yes. A 12–13 ton class machine like the ZX120 regularly lifts concrete manholes, drainage pipe, and small precast elements within its published load chart. Always consult the specific load chart, subtract attachment weight, and follow local safety regulations before picking any load. The width and length of the undercarriage provide stable support for these combined operations.
Q3: How does the ZX120 compare to a ZX135 or ZX130?
A3: The ZX120 is slightly lighter, often easier to transport, and produces a bit less breakout force than the ZX130 or ZX135. ZX135 models are typically reduced tail swing machines for tighter spaces, while the ZX120 offers a conventional tail swing for maximum stability. For the grabber or pin-on bucket setup, either platform works-just confirm hydraulic flow.
Q4: Can I run modern hydraulic attachments on an older ZX120?
A4: Most ZX120 models can operate thumbs, breakers, and compactors as long as the auxiliary circuit matches the attachment's flow and pressure needs. Consult an attachment dealer and a parts supplier like Fab Heavy Parts to confirm the correct auxiliary valve, hoses, and return line configuration.
Q5: Where can I get replacement parts for my Hitachi ZX120?
A5: Fab Heavy Parts at fabheavyparts.com specializes in parts for the Hitachi ZX120 series and similar efficient construction equipment. Gather your model, serial number, and any OEM part numbers, then reach out via the website for fast, accurate support.
Recommended Replacement Parts for Hitachi ZX120 at Fab Heavy Parts
1.
Condition: new, aftermarket
Part Number: 4645227
Voltage: 24V
Compatible Equipment Models: The Fuel Feed Pump fits for CP220-3, EG65R-3, EG70R-3, FPC1700, MA200, SCX400-C3, SCX400T-C3, SCX500, SCX550, SCX700-2, SCX700-C3, SCX800-2, SCX800HD-2, SCX900-2C3, SR2000G, VR512, VR512-2, VR516FS, ZH200-A, ZH200LC-A, ZR125HC, ZR950JC, ZW250-5B, ZX110-3, ZX110-3-AMS, ZX110-3-HCME, ZX110M-3, ZX110M-3-HCME, ZX120-3, ZX130-3, ZX130K-3, ZX130LCN-3F-AMS, ZX130LCN-3FHCME, ZX135US-3, ZX135US-3-HCME, ZX135US-3F-AMS, ZX135US-3F-HCME, ZX135USK-3, ZX140W-3, ZX140W-3-AMS...
2.
Condition: new, aftermarket
Replace Part Number: 898185-1951, VA430131, VB430131, VC430131, VD430131, 8980681970,
8-98068-1970, 898068-1970, 8 98068 1970, 8-98185-1951, 898185-1951, 8981851951, F51CND-S0131B, F51CND-S0131G, F51CNDS0131B, F51CNDS0131G
Turbo Model: RHF5
Fit for Engine: Isuzu 4JJ1X
Applications : The Turbocharger fits for Hitachi Tire Roller: CP220-3; Hitachi Excavator: PZX135USK-3F, ZX110-3, ZX110-3-AMS, ZX110-3-HCME, ZX110M-3, ZX110M-3-HCME, ZX120-3, ZX130-3-AMS, ZX130-3-HCME, ZX130K-3, ZX135US-3, ZX135US-3-HCME, ZX135US-3F-HCME, ZX135USK-3; John Deere Excavator: 135D
3.
Hitachi Excavator ZX110 ZX120 ZX160 ZX200 ZX225USR ZX230 ZX270 ZX330 24V Blower Motor 4370266
Condition: new, aftermarket
Part Number: 4370266
Voltage: 24V
Compatible Models: The Blower Motor fits for 270C LC John Deere CHR70 EX100-5 EX100-5 JPN EX100M-5 EX120-5 EX120-5 JPN EX120-5HG EX120-5LV JPN EX120-5X EX120-5Z EX120SS-5 EX125WD-5 EX130H-5 EX130H-5 JPN EX130K-5 EX135USR EX135USRK EX150LC-5 EX200-3 EX200-5 EX200-5 JPN EX200-5HG EX200-5HHE EX200-5LV JAP EX200-5X JPN EX200-5Z JPN EX200LC-5HHE EX200SS-5 EX210H-5 EX210H-5 JPN EX210K-5 JPN EX210LC-5HHE EX225USR(LC) EX225USRK(LC) IZX200 IZX200LC MA200-G RX2300 UCX300 ZX110 ZX110-E ZX110M ZX120 ZX120-E ZX125W ZX130-AMS ZX130-HCME
4.
A/C Evaporator 4469056 Fits for John Deere 120C 160C 600C for Hitachi ZX110 ZX120 ZX180W Excavator
Part Numbers: 4469056
Condition: New, Aftermarket
Package Contents: 1 x A/C Evaporator (4469056)
Equipment Compatibility: The A/C Evaporator fits for John Deere Engine: 4045, 6125; John Deere Excavator: 120C, 160C, 160CLC, 180, 180CW, 450CLC, 450DLC, 600C, 650CLC, 650DLC, 800C, 850DLC; Hitachi Excavator: EX1200-5, EX1200-5C, EX1200-5D, EX1200-6, FV30, PZX450-HCME, TL1100-3, ZX110, ZX110-E, ZX110M, ZX120, ZX120-E, ZX120-HCMC, ZX130-AMS, ZX130-HCME, ZX130H, ZX130K, ZX130W, ZX130W-AMS, ZX160, ZX160LCT, ZX160W, ZX160W-AMS, ZX1800K-3, ZX180LC, ZX180LC-AMS, ZX180LC-HCME, ZX180W, ZX180W-AMS, ZX200-3, ZX225USR-3, ZX240-3, ZX330-3, ZX450, ZX450-3, ZX450-3F, ZX450H, ZX450H-HHE, ZX460LCH-AMS, ZX460LCH-HCME, ZX470H-3, ZX470H-3-HCMC, ZX470H-3F, ZX470R-3, ZX470R-3F, ZX480MT, ZX480MTH, ZX500LC, ZX500LC-3...
5.
Compatible Part Numbers: 4617327, 4431082
Compatible Equipment: The A/C Condenser Core fits for Hitachi Excavators: PZX450-HCME, TL1100-3, ZAXIS120, ZAXIS160LC, ZAXIS180W, ZAXIS450LC, ZAXIS450LC-3, ZAXIS600LC, ZAXIS650LC-3, ZAXIS800, ZAXIS850LC-3, ZX110, ZX110-E, ZX110M, ZX120, ZX120-E, ZX120-HCMC, ZX130-AMS, ZX130H, ZX130-HCME, ZX130K, ZX130W, ZX130W-AMS, ZX160, ZX160W, ZX160W-AMS, ZX1800K-3, ZX180LC, ZX180LC-AMS, ZX180LC-HCME, ZX180W, ZX180W-AMS, ZX450, ZX450-3, ZX450-3F, ZX450H, ZX450H-HHE, ZX460LCH-AMS, ZX460LCH-HCME, ZX470H-3, ZX470H-3F, ZX470H-3-HCMC, ZX470R-3, ZX470R-3F, ZX480MT, ZX480MTH, ZX500LC, ZX500LC-3, ZX500LC-3F, ZX500LCH, ZX520LCH-3, ZX520LCH-3F, ZX520LCR-3, ZX520LCR-3F, ZX600, ZX650H, ZX650LC-3...
6.
Replace Part Number: 9247135, YB60000571, 9257577
Applications: The Pilot Control Valve fits for Hitachi Excavator: EG65R-3, EG70R-3, MA200, TX160, ZW250-5B, ZX110-3, ZX110-3-AMS, ZX110-3-HCME, ZX110M-3, ZX110M-3-HCME, ZX120-3, ZX130-3, ZX130-3-AMS, ZX130-3-HCME, ZX130K-3, ZX130LCN-3F-AMS, ZX130LCN-3FHCME, ZX135US-3, ZX135US-3F-AMS, ZX135US-3F-HCME, ZX135US-3-HCME, ZX135USK-3, ZX160LC-3, ZX160LC-3-AMS, ZX160LC-3-HCME, ZX180LC-3, ZX180LC-3-AMS, ZX180LC-3-HCME, ZX200-3, ZX200-3F, ZX200-3-HCMC, ZX210-3-AMS, ZX210-3-HCME, ZX210H-3, ZX210H-3F, ZX210H-3-HCMC, ZX210K-3, ZX210K-3F, ZX210K-3-HCMC, ZX210LC-3-HCMC, ZX210LCK-3-HCMC, ZX210N-3-AMS, ZX210N-3-HCME, ZX225US-3, ZX225US-3F, ZX225US-3-HCME, ZX225USR-3, ZX225USR-3F...
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Welcome to Fab Heavy Parts' online catalog, your trusted source for quality auto parts and tools. Explore our extensive selection of Replacement Parts for Hitachi ZX120 and more. Avoid delays by securing the parts you need from a reliable supplier who keeps inventory moving. Our expert team is here to provide personalized support, ensuring you get the right parts. Reach out today to stay ahead and keep your operations seamless!