Compact Crawler Excavator HT40 Overview
The Hightop 4-ton class mini digger is a 3810kg compact crawler excavator designed for tight-space excavation. It pairs a Kubota D1703 diesel engine (18.5kW / 25HP @ 2200rpm, Euro 5 / EPA4 emission) with a 22.5MPa hydraulic system to deliver a 3810kg operating weight, 0.12m³ standard bucket, 30.4kN bucket digging force, 18.2kN arm digging force, 9rpm swing speed, 58% maximum grade ability, and 32KPa ground pressure. Maximum digging depth is 3208mm, maximum digging height 4800mm, and maximum digging distance 5480mm — the working range required for trenching, foundation, utility, and landscaping work.
Performance & Hydraulics
- 0.12m³ standard bucket for efficient material handling in tight spaces.
- 30.4kN maximum bucket digging force for breaking through hard ground.
- 18.2kN maximum arm digging force for sustained digging pressure.
- 22.5MPa hydraulic system pressure for responsive, high-output operation.
- 9rpm swing speed for smooth, controlled rotation between dig and dump cycles.
- 58% maximum grade ability for slope work and uneven terrain.
- 32KPa ground pressure for stable operation on soft or finished surfaces.
Kubota D1703 / Engine — Kubota D1703
- Make / Model: Kubota D1703 diesel engine.
- Type: In-line, water-cooled, 4-stroke, mechanical pump, normally aspirated.
- Power: 18.5kW (25HP) @ 2200rpm.
- Maximum torque: 97.4N.m @ 1500rpm.
- Displacement: 1.647L.
- Number of cylinders: 3.
- Emission standard: Euro 5 / EPA4.
- Engine oil capacity: 7L.
Track Driving System
- Maximum travel speed (high / low): 4.4 / 2.4 km/h.
- Steel track shoe width: 300mm.
- Carrier rollers per side: 1.
- Supporting rollers per side: 4.
Compact Crawler Excavator HT40 Key Features
The Hightop 3810kg compact crawler excavator is a 4-ton class mini digger designed for efficient operation in tight spaces. Powered by a Kubota D1703 3-cylinder, in-line, water-cooled, 4-stroke diesel engine with Euro 5/EPA4 emission compliance, it delivers 18.5kW (25HP) at 2200rpm, 97.4N.m max torque at 1500rpm, and 1.647L displacement — strong power with clean, low emissions for emission-regulated markets.
For hydraulics and digging performance, this 4-ton class mini digger features a 22.5MPa hydraulic system with 30.4kN max bucket digging force and 18.2kN max arm digging force, easily breaking through hard ground. The 9rpm swing speed ensures smooth transitions between dig and dump cycles, handling trenching, foundation work, utility installation, and landscaping with ease.
In structure and working range, the overall dimensions of 4915 × 1720 × 2525mm keep the machine compact and easy to transport. With only 860mm tail swing radius and 55°/65° boom swing angle, it works close to walls and fences. Maximum digging depth of 3208mm, max digging height of 4800mm, and max digging distance of 5480mm provide wide coverage, reducing machine repositioning.
For travel and terrain adaptability, the 300mm-wide steel track shoes with 1 carrier roller and 4 supporting rollers per side provide a stable, durable undercarriage. Maximum travel speed of 4.4 / 2.4 km/h (high / low) ensures flexible maneuverability, 58% maximum grade ability handles slopes and uneven terrain, and only 32KPa ground pressure allows stable travel on finished surfaces, lawns, or soft ground without surface damage — ideal for landscaping and garden projects.
With its powerful and clean Kubota power, compact and flexible structure, stable hydraulic output, and excellent working range, the Hightop 3810kg compact crawler excavator is widely used in small-to-mid construction earthmoving, landscaping and grading, municipal utility installation, agricultural earthworks, and rental fleet operations — a practical 4-ton class mini digger that balances performance, flexibility, and economy.
Compact Crawler Excavator HT40 Specifications
Compact Crawler Excavator HT40 Product Images
The Hightop 3810kg compact crawler excavator is a 4-ton class mini digger powered by a Kubota D1703 3-cylinder diesel engine (18.5kW/25HP @ 2200rpm) with Euro 5/EPA4 emission compliance. With a 0.12m³ standard bucket, 30.4kN bucket digging force, 3208mm max digging depth, and 58% grade ability, it is built for tight-space excavation in construction, landscaping, and utility projects.
Compact Crawler Excavator HT40 Applications
- Construction earthmoving — Trenching, foundation excavation, and site preparation for small-to-mid construction projects.
- Landscaping and grading — Yard leveling, terrain shaping, and tree-pit digging.
- Utility installation — Water, gas, electric, and fiber-optic cable trenching in urban and suburban areas.
- Indoor and confined-area work — The 860mm tail swing radius and compact dimensions support operation in tight spaces.
- Rental fleet deployment — 4-ton class mini digger for rental companies serving residential and small commercial customers.
- Agricultural earthworks — Farm infrastructure construction, drainage work, and pond digging.
Hightop After-Sales Service
All products are covered by a 12‑month warranty for manufacturing defects commencing from the delivery date. Hightop Group maintains stock of replacement cutting edges, wear plates and bucket teeth to supply required spare components. Prior to shipment, our team will offer you installation guidance as well as compatibility verification services. Should the bucket fail to fit your equipment because of improper size selection, please get in touch with us within 15 days to obtain exchange support. We arrange deliveries to destinations all over the globe, adopting standard‑grade export packaging that suits both sea freight and air transport.
Compact Crawler Excavator HT40 Frequently Asked Questions
Q1: What is the operating weight of this 4-ton class mini digger?
A: The operating weight is 3810kg, placing it in the 4-ton compact crawler excavator class.
Q2: What engine does this compact crawler excavator use?
A: It is powered by a Kubota D1703 3-cylinder, in-line, water-cooled, 4-stroke diesel engine with mechanical pump and normally aspirated design. Power output is 18.5kW (25HP) at 2200rpm, with a maximum torque of 97.4N.m at 1500rpm. Displacement is 1.647L.
Q3: What emission standard does the engine meet?
A: The Kubota D1703 engine meets Euro 5 and EPA4 emission standards.
Q4: What is the standard bucket capacity?
A: The standard bucket capacity is 0.12m³.
Q5: What is the maximum digging depth?
A: The maximum digging depth is 3208mm, and the maximum vertical digging depth is 2957mm.
Q6: What is the maximum bucket digging force?
A: The maximum bucket digging force is 30.4kN, with a maximum arm digging force of 18.2kN.
Q7: What is the maximum grade ability?
A: The 4-ton class mini digger can handle slopes up to 58%.
Q8: What is the ground pressure?
A: The ground pressure is 32KPa, allowing stable operation on soft or finished surfaces.
Q9: What is the maximum travel speed?
A: The maximum travel speed is 4.4 km/h in high range and 2.4 km/h in low range.
Q10: What are the overall dimensions?
A: The overall dimensions are 4915mm long × 1720mm wide × 2525mm high, with a 1670mm axle base and 1420mm track gauge.
Q11: What is the boom swing angle?
A: The boom swing angle is 55° to the left and 65° to the right, enabling work in tight spaces alongside obstacles.
