HCLH supplies hydraulic surface top hammer drill rigs for quarrying, surface mining, road construction, and rock excavation. Explore the ST120F and crawler-mounted ST120H to compare drilling diameter, rock drill power, boom design, and tooling configuration. Contact our team to identify a suitable rig for your drilling conditions and project requirements.
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Surface Top Hammer Drill Rigs
Choosing the right surface top hammer drill rig starts with your required hole diameter, drilling depth, rock conditions, and working environment. HCLH currently features two ST-series models with different boom designs and drilling configurations. Compare their specifications below to determine which model deserves further technical evaluation.
The ST120F is a hydraulic, diesel-powered surface top hammer drilling rig featuring a folding or knuckle boom design. It is intended for surface rock drilling applications where drilling coverage, hole positioning, and compatible tooling are important considerations.
- Drilling diameter: 76–127 mm
- Rock drill power: 20 kW
- Engine power: 177 kW
- Drill rod specifications: T45 / T51
- Operating weight: 17,300 kg
- Boom design: Folding / knuckle boom
Consider this model when: Your project requires a surface top hammer drill rig with a folding boom and a choice of T45 or T51 tooling, subject to configuration confirmation.
View ST120F Specifications
The ST120H is a fully hydraulic, crawler-mounted surface top hammer drill rig with a telescopic boom and an integrated drilling system. Its crawler undercarriage supports movement between drilling positions on suitable working surfaces, while its published configuration includes an LD120H rock drill and a two-stage dry dust collection system.
- Drilling diameter: 76–127 mm
- Rock drill model: LD120H
- Rock drill power: 22 kW
- Engine power: 177 kW
- Drill rod specification: T51
- Operating weight: 16,140 kg
- Boom design: Telescopic boom
Consider this model when: Your project requires crawler mobility, a telescopic boom, and the published ST120H drilling configuration.
View ST120H Specifications
Note: The specifications above reflect the published model information available for these rigs. Confirm the current configuration, maximum drilling depth, and other operating parameters with HCLH before purchasing.
Compare ST120F and ST120H Top-Hammer Drilling Rigs
Both models share a published drilling diameter range of 76–127 mm, but their boom designs, rock drill power ratings, and drill rod specifications differ. The most suitable option depends on your drilling pattern, required productivity, site layout, and tooling requirements.
| Comparison Factor |
ST120F |
ST120H |
| Equipment Type |
Surface top hammer drill rig |
Crawler-mounted surface top hammer drill rig |
| Drilling Diameter |
76–127 mm |
76–127 mm |
| Rock Drill Power |
20 kW |
22 kW |
| Engine Power |
177 kW |
177 kW |
| Boom Design |
Folding / knuckle boom |
Telescopic boom |
| Drill Rod Specification |
T45 / T51 |
T51 |
| Operating Weight |
17,300 kg |
16,140 kg |
| Product Detail |
View ST120F |
View ST120H |
Rock drill power alone does not determine drilling productivity. Rock strength, hole depth, bit selection, drilling parameters, and operating conditions also influence actual performance. Request the relevant technical data before comparing models for a specific project.
How Do Hydraulic Top Hammer Drill Rigs Work?
A hydraulic top hammer drill rig uses a rock drill mounted near the feed or boom assembly to generate impact energy. The energy travels through the drill string to the drill bit, where repeated impact and rotation break the rock. A flushing system helps remove drilling cuttings from the hole.
This drilling method is commonly used in surface applications that require controlled hole positioning and repeated drilling patterns. The appropriate rig and tooling combination depends on the required hole diameter, drilling depth, geological conditions, and production target.
Hydraulic Drilling System
The hydraulic system supplies power to the rock drill and related machine functions. When evaluating a rig, buyers should consider the rock drill rating, hydraulic control, maintenance requirements, and compatibility with the planned drilling application.
Drill Rod and Bit Compatibility
The drill rod, shank adapter, coupling sleeve, and bit must match the rock drill and intended hole diameter. Correct tooling selection supports effective energy transmission and helps manage component wear.
Flushing and Dust Management
Flushing removes cuttings generated during drilling. Depending on the rig configuration and working environment, buyers should evaluate air supply, dust collection, filter maintenance, and site-specific dust control requirements.
Applications of Surface Top Hammer Drill Rigs
Surface top hammer drill rigs are used in a range of rock drilling projects. Equipment selection should be based on the planned drilling method, geology, hole pattern, and site conditions rather than application names alone.
Open-Pit Mining
Surface mining operations may require drilling for production blast holes and bench preparation. Buyers should confirm the required hole diameter, target depth, bench height, drilling angle, and expected output before selecting a rig.
Quarrying and Aggregate Production
Quarry operators can evaluate top hammer drill rigs for suitable production drilling and blast-hole patterns. Rock hardness, abrasiveness, hole spacing, and daily production targets are important factors when comparing equipment.
Road Construction and Rock Excavation
Road cuts and infrastructure projects may require drilling through rock before excavation or controlled blasting. Consider available working space, machine access, required hole orientation, and the layout of the drilling area.
Foundation and Civil Engineering
Certain foundation and civil engineering projects require drilling in rock formations. Confirm the required depth, hole geometry, engineering tolerances, and excavation method with the project engineer before selecting the machine.
Learn more about HCLH's Mining, Quarrying and Construction Applications to identify the equipment categories relevant to your project.
How to Choose the Right Surface Top Hammer Drill Rig
Before requesting a quotation, evaluate the following factors to determine whether a hydraulic top hammer drill rig matches your project requirements.
1. Required Hole Diameter and Depth
Identify the target hole diameter, depth, inclination, and drilling pattern. Both the ST120F and ST120H have a published drilling diameter range of 76–127 mm. Confirm the achievable drilling depth and compatible configuration with HCLH.
2. Rock Type and Geological Conditions
Rock strength, abrasiveness, fractures, and geological variability affect penetration performance and tooling life. Provide geological information whenever possible so the equipment and drill bit can be evaluated against actual site conditions.
3. Boom Design and Drilling Coverage
Compare the folding boom of the ST120F with the telescopic boom of the ST120H. Ask for the working envelope and relevant technical drawings to determine how well each configuration matches the planned hole layout and available working space.
4. Mobility and Site Access
Consider ground conditions, travel routes, available working width, bench geometry, and transportation requirements. For crawler-mounted equipment, confirm the machine's gradeability, ground clearance, and operating limits with the manufacturer.
5. Tooling and Maintenance
Check drill rod specifications, bit compatibility, spare parts availability, routine maintenance requirements, and technical support arrangements. Consumable compatibility and replacement availability can affect operating costs over the machine's service life.
6. Total Operating Cost
Compare fuel consumption, productive drilling hours, tooling consumption, maintenance, labor, and downtime. The lowest purchase price does not necessarily result in the lowest cost per meter drilled.
Top-Hammer Drill Rigs vs. Down-the-Hole Drill Rigs
Top-hammer and down-the-hole (DTH) drilling systems use different impact mechanisms. A top-hammer system transmits impact energy through the drill string from the rock drill, while a DTH hammer operates near the bottom of the hole. The appropriate method depends on hole diameter, drilling depth, rock conditions, hole straightness, air supply, and total drilling cost.
| Factor |
Top-Hammer Drill Rig |
DTH Drill Rig |
| Impact Mechanism |
Impact energy is transmitted through the drill string. |
The hammer operates near the drill bit at the bottom of the hole. |
| Tooling |
Top-hammer rods, shank adapters, coupling sleeves, and compatible bits. |
DTH hammers, drill pipes, DTH bits, and compatible adapters. |
| Selection Priorities |
Hole geometry, drilling pattern, rock drill performance, and tooling wear. |
Hole depth, diameter, straightness, hammer selection, and air supply. |
If your project requires a different drilling method, explore HCLH's Down-the-Hole Drilling Rigs and compare the available configurations with your drilling requirements.
Why Source Top-Hammer Drilling Rigs from HCLH?
Beijing Haichuang Unite Technology Co., Ltd. supplies mining machinery, rock drilling equipment, drilling tools, and related spare parts for international customers. HCLH reports more than 20 years of experience in the rock drilling field and supports equipment requirements across mining, quarrying, and construction applications.
- Surface drilling equipment: Compare the ST120F and ST120H according to your drilling requirements.
- Related product range: Explore drilling rigs, compatible drilling tools, and other mining equipment categories.
- Technical selection: Discuss hole diameter, drilling depth, rock conditions, and equipment configuration before ordering.
- Procurement support: Confirm specifications, accessories, spare parts, delivery arrangements, and warranty terms with the sales team.
Frequently Asked Questions About Top-Hammer Drilling Rigs
What is a top-hammer drilling rig?
A top-hammer drilling rig uses a rock drill mounted near the feed or boom assembly to transmit impact energy through the drill string to the bit. It is commonly used for suitable surface rock drilling applications in mining, quarrying, and construction.
What is the difference between a surface top hammer drill rig and a crawler top hammer drill rig?
Surface top hammer drill rig describes the equipment category and application, while crawler top hammer drill rig emphasizes the tracked undercarriage. A crawler-mounted rig can move between drilling positions on suitable surfaces. The exact mobility and working capabilities depend on the machine design.
What is the drilling diameter range of the HCLH ST120F and ST120H?
Both models have a published drilling diameter range of 76–127 mm. Confirm the selected bit, rod configuration, and applicable operating conditions before purchase.
How do I choose between the ST120F and ST120H?
Compare the boom design, rock drill power, drill rod specifications, machine dimensions, operating weight, and drilling coverage. The ST120F features a folding or knuckle boom, while the ST120H uses a telescopic boom and has a published 22 kW rock drill rating. Ask HCLH to confirm the configuration that best matches your project.
Can top-hammer drill rigs be used for quarrying and open-pit mining?
Yes. Surface top hammer drill rigs are used for suitable drilling tasks in quarrying and surface mining. The correct model depends on the required hole diameter and depth, rock conditions, drilling pattern, and production target.
What information should I provide when requesting a quotation?
Provide the intended application, hole diameter, drilling depth, rock conditions, drilling volume, project location, and delivery destination. Include any requirements for drilling tools, spare parts, warranty, and after-sales support.
Can HCLH supply compatible drilling tools?
HCLH offers a range of top-hammer drilling tools. Compatibility depends on the rig model, rock drill, thread specification, and hole requirements. Provide these details so the supplier can confirm suitable components.
