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The ST120F is a hydraulic integrated top-hammer drilling rig, which is driven by an internal combustion engine.

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ST120F Surface Top-hammer Drilling Rig

The ST120F is a hydraulic integrated top-hammer drilling rig, which is driven by an internal combustion engine. It features exceptional energy-saving capabilities. It is equipped with a stable and efficient Sandvik rock drill and offers hassle-free maintenance. Its innovative integration of the CMS and hydraulic control energy-saving systems significantly reduces fuel consumption and substantially cuts operational costs. Additionally, The rig's knuckle boom design widens drilling coverage while enhancing flexibility. This allows precise multi-hole operations upon a single positioning, making it an energy-efficient and high-performance choice for construction sites, quarries, and small-to-medium-sized mining operations.

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Product Features

The ST120F Hydraulic Top Hammer Drill Rig is an integrated, diesel-powered surface drilling machine designed for road cutting, foundation excavation, pipe trench drilling, and medium-sized quarry operations. Equipped with a Sandvik rock drill, a folding boom, and integrated drilling control systems, it combines productive rock drilling with flexible hole positioning and practical maintenance access. Its 76–127 mm drilling diameter range makes it suitable for a variety of surface drilling requirements. Contact HCLH to confirm the configuration for your project conditions.

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Key Features of the ST120F Hydraulic Top Hammer Drill Rig

1. Hydraulic Top-Hammer Drilling Performance

The ST120F uses a hydraulic rock drilling system to deliver impact energy through the drill string to the bit. This top-hammer drilling method is suited to surface rock drilling operations where hole positioning, penetration performance, and consistent drilling quality are important. Its specified 20 kW rock drill and 76–127 mm hole diameter range help project managers assess whether the machine matches their planned drilling work.

2. Folding Boom for Flexible Hole Positioning

The folding boom helps expand the drilling coverage available from a single machine position. This design can reduce unnecessary repositioning when multiple holes are required within the available working area. Actual coverage depends on the boom geometry, hole layout, bench conditions, and machine positioning. Buyers should confirm the drilling envelope against their site layout before placing an order.

3. Integrated Control for Operating Efficiency

The ST120F incorporates CMS and hydraulic control energy-saving systems intended to help manage fuel consumption during drilling operations. The machine also features THC advance-impact tracking and Rock Pilot adaptive drilling control systems, as described in the manufacturer's product information. These systems support drilling control and operational consistency; actual results depend on rock conditions, operator practices, maintenance, and working settings.

4. Practical Maintenance and Service Access

Maintenance accessibility is an important consideration for equipment working in remote quarries and construction sites. The ST120F is designed to allow routine daily and weekly maintenance tasks to be performed from ground level where applicable. Easier access to service points can help maintenance teams carry out inspections more efficiently and manage avoidable downtime.

5. Operator Visibility and Site Safety

Large safety-laminated glass windows and work lights support visibility around the drilling area. Operators should still follow the machine operating manual, site traffic management rules, exclusion zones, and the required procedures for drilling, travel, and maintenance.

Applications of the ST120F Surface Top Hammer Drill Rig

The ST120F is intended for surface drilling projects that require an integrated hydraulic top-hammer rig. Before selecting a machine, consider the required hole diameter, rock characteristics, drilling pattern, site access, and expected daily output.

Quarrying and Aggregate Production

In medium-sized quarries, the ST120F can be evaluated for production drilling and planned blast-hole patterns. The drilling diameter, rock drill configuration, and available boom coverage should be checked against the quarry's bench height, rock hardness, and fragmentation requirements.

Road Cutting and Highway Construction

Road construction projects may require rock drilling for cut slopes, excavation, and related infrastructure work. The ST120F's folding boom and integrated design can be considered where multiple holes must be drilled across a defined working area.

Foundation Excavation

For foundation and rock excavation projects, drilling requirements vary according to the foundation design, rock formation, and excavation method. Confirm the necessary hole diameter, depth, orientation, and drilling tolerance before choosing the rig.

Pipe Trenching and Municipal Engineering

The ST120F can be considered for rock drilling associated with pipe trench construction and municipal infrastructure. Site access, nearby structures, vibration limits, and the intended excavation method should be assessed during equipment selection.

Hydraulic Top Hammer Drill Rig vs. Down-the-Hole Drill Rig

Hydraulic top-hammer and down-the-hole (DTH) drilling rigs use different impact mechanisms. Choosing between them depends on hole diameter, drilling depth, rock conditions, hole straightness requirements, compressor capacity, and the total cost of the drilling operation.

Selection Factor	Hydraulic Top-Hammer Rig	DTH Drill Rig
Impact Mechanism	The rock drill delivers impact energy through the drill string.	The hammer operates near the drill bit at the bottom of the hole.
Typical Evaluation Priorities	Penetration performance, drilling coverage, mobility, and tooling compatibility.	Hole depth, diameter, straightness, air supply, and hard-rock performance.
Tooling System	Top-hammer rods, shank adapters, coupling sleeves, and compatible bits.	DTH hammers, drill pipes, DTH bits, and compatible adapters.
Best Selection Method	Match the rig to the planned surface drilling pattern and geological conditions.	Match the complete hammer, bit, compressor, and drilling-depth requirements.

There is no universally better method for every project. If your drilling plan involves greater depths, different hole diameters, or specific hole-deviation limits, compare the complete drilling systems rather than the machine price alone. You can also explore our Down-the-Hole Drilling Rigs for alternative drilling requirements.

Compatible Top-Hammer Drilling Tools and Consumables

Drilling performance depends on the complete system, not only the rig. Drill rods, shank adapters, coupling sleeves, and button bits must be matched to the rock drill, thread specification, hole diameter, and rock formation. Incorrect tooling combinations can increase wear, reduce energy transfer, and raise the cost per meter drilled.

Drill rods: Confirm the T45 or T51 connection requirements and the appropriate rod length for the intended drilling configuration.
Shank adapters: Verify compatibility with the installed rock drill and its connection specifications.
Coupling sleeves: Match the thread form and dimensions to the selected drill rods and adapters.
Button bits: Select the bit diameter and button configuration according to rock hardness, abrasiveness, and the required hole quality.

Browse our Top-Hammer Drilling Tools to review related tooling options. Send your rock drill model, thread type, hole diameter, and rock conditions to our team for compatibility confirmation.

How to Evaluate the Operating Cost of a Hydraulic Top Hammer Drill Rig

For mining contractors and quarry operators, the purchase price is only one part of the equipment investment. The more useful comparison is the cost of completing the required drilling work over the machine's operating life.

Fuel Consumption

Compare fuel consumption under similar rock conditions, hole diameters, and operating schedules. Control systems may help optimize energy use, but fuel savings should be verified using comparable site data rather than relying on a general percentage alone.

Drilling Productivity

Evaluate productive drilling hours, meters drilled per shift, hole deviation, repositioning time, and the number of completed holes. The actual penetration rate varies with rock hardness, fractures, drilling parameters, tooling condition, and operator experience.

Tooling and Maintenance Costs

Include drill bits, rods, adapters, routine servicing, replacement parts, and labor in the cost calculation. Correct tooling selection and preventive maintenance can help reduce premature wear and unplanned interruptions.

Cost per Meter Drilled

A practical comparison is to divide the total operating cost over a defined period by the total meters drilled during that period. Include fuel, labor, consumables, maintenance, and equipment-related costs, using the same accounting method when comparing different rigs.

How to Choose the Right Hydraulic Top Hammer Drill Rig

Before requesting a quotation, prepare the following project information. It allows the supplier to assess whether the ST120F matches your operating requirements and identify any configuration details that need confirmation.

Required hole diameter: Confirm the planned diameter and whether it falls within the machine's specified 76–127 mm range.
Required hole depth: Provide the target depth and drilling pattern. Confirm the achievable depth for the selected rod and feed configuration.
Rock conditions: Describe rock hardness, abrasiveness, fractures, and other relevant geological characteristics.
Project application: Identify whether the rig will be used for quarry production, road cutting, foundation excavation, or pipe trench work.
Site conditions: Specify bench dimensions, ground conditions, working space, access restrictions, and transportation limitations.
Operating environment: Provide the working altitude, ambient temperature, dust conditions, and any applicable local requirements.
Service and parts support: Ask about recommended maintenance intervals, consumable availability, technical assistance, warranty terms, and spare parts supply.

If you are comparing several models, review the complete technical specifications, configuration, operating costs, and service arrangements. The lowest initial price does not necessarily represent the lowest cost over the machine's working life.

Why Work with HCLH for Drilling Equipment?

Beijing Haichuang Unite Technology Co., Ltd. supplies mining machinery, rock drilling equipment, drilling tools, and related spare parts for international customers. Our product range supports applications in mining, quarrying, highway construction, and other infrastructure projects.

Industry experience: More than 20 years of experience in the rock drilling field, according to our company information.
Product range: Access to surface and underground drilling rigs, drilling tools, and related equipment.
Technical assistance: Support with product selection, configuration confirmation, and equipment-related questions.
Parts sourcing: Access to related drilling equipment components and consumables through our product range.

Learn more about HCLH and our company capabilities, or contact our team to discuss your drilling requirements.

Parameters

Bore Diameter	76- 127 mm
Rod Diameter	T45，T51
Rock Drill Power	20 kw
Engine Power	177 kw
Air Compressor	8.1m³/min, 10 bar
Dimension (L×W×H)	12500×2600×3320mm
Weight	17,300 kg

FAQ

Do you provide technical support?

Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.

Sales Coverage

We supply specialized products to customers worldwide.

Do you provide technical support?

Yes. We provide professional pre-sales, in-sales, and after-sales support, along with expert technical guidance and usage precautions.

Warranty Policy

We provide repair service if there is necessary

Payment Methods

30% advance payment,70% balance payment before shipment