
📦 High-Pressure Air Compressors
Kaishan LGCY-39/25 Portable Diesel Screw Compressor
Model: LGCY-39/25
The Kaishan LGCY-39/25 portable diesel screw compressor delivers 39 m³/min of free air at 25 bar, making it one of the most powerful models in its class for heavy-duty industrial applications. Designed for drilling, mining, and construction, this diesel-driven rotary screw air compressor combines high pressure with high flow to support DTH hammers, water well drilling, and large-scale pneumatic operations. Its robust chassis, reliable diesel engine, and advanced air-end technology ensure continuous performance in the most demanding environments. With a focus on fuel efficiency, easy maintenance, and long service life, the LGCY-39/25 is engineered to reduce downtime and operating costs. Whether you are drilling deep boreholes or powering multiple pneumatic tools, this compressor provides the consistent air supply you need. Kaishan's global service network and genuine spare parts support make it a trusted choice for contractors worldwide.
Best For
Technical Specifications
| Model | LGCY-39/25 |
| Free Air Delivery | 39 m³/min (1,377 CFM) |
| Working Pressure | 25 bar (362 psi) |
| Engine | Cummins or Yuchai heavy-duty diesel |
| Air Outlet Port | G1.5×1, G3/4×1 |
| Weight | 4,500 kg |
| Dimension (L×W×H) | 4,200 × 1,800 × 2,500 mm |
Product Details
Technical Selection
Key parameters for matching this machine to your job. Send us your hole diameter, depth and rock condition and our engineers will confirm the right configuration.
Working Pressure
25 bar (362 psi)
Free Air Delivery
39 m³/min (1,377 CFM)
Weight
4,500 kg
Dimension (L×W×H)
4,200 × 1,800 × 2,500 mm
Not sure this model fits? Tell us the hole diameter and depth — we will confirm the matching rig, compressor and hammer.
Check with an engineerKey Advantages
High free air delivery of 39 m³/min (1,377 CFM) at 25 bar working pressure
Powered by reliable Cummins or Yuchai diesel engine for dependable performance
Heavy-duty rotary screw air end designed for continuous operation
Advanced microprocessor control system with automatic protection
Rugged portable chassis with towbar and brakes for easy transport
Weather-resistant and sound-attenuated enclosure for outdoor use
High ambient cooling system suitable for harsh climates
Low fuel consumption and extended service intervals for reduced operating costs
Applications
📍 Water Well Drilling
High-pressure air is essential for DTH hammer drilling in water well applications, where penetration rates and hole cleanliness depend on consistent air supply.
Solution: The LGCY-39/25 provides 39 m³/min at 25 bar, ideal for driving DTH hammers in medium to hard rock formations, ensuring fast drilling and efficient cuttings removal.
📍 Mining and Quarrying
Mining operations require reliable, high-volume compressed air for drilling blast holes, powering pneumatic tools, and ventilation support.
Solution: With its robust diesel engine and high-altitude capability, the LGCY-39/25 delivers continuous air power in remote mining sites, reducing downtime and increasing productivity.
📍 Construction and Foundation Work
Construction projects often need portable compressors for pile driving, rock breaking, and site cleaning, where mobility and power are critical.
Solution: The towable chassis and high flow rate make the LGCY-39/25 easy to move around job sites, powering multiple pneumatic tools simultaneously for efficient construction operations.
📍 Geothermal and Exploration Drilling
Geothermal and mineral exploration drilling demand high-pressure air for deep hole drilling and sample recovery.
Solution: The LGCY-39/25's 25 bar pressure and 39 m³/min flow support deep drilling with DTH hammers, ensuring reliable performance in challenging geological conditions.
LGCY Series Models
Compare specifications across the series to find the right model.
| ☑ | Model | Model | Free Air Delivery | Working Pressure | Engine | Air Outlet Port | Inquire |
|---|---|---|---|---|---|---|---|
| LGCY-39/25This model | LGCY-39/25 | 39 m³/min (1,377 CFM) | 25 bar (362 psi) | Cummins or Yuchai heavy-duty diesel | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-39/25A | LGCY-39/25A | 39 m³/min | 25 bar | Cummins / Yuchai diesel engine | G2×1, G1×1 | Get a Quote | |
| LGCY-33/25 | LGCY-33/25 | 33 m³/min (1,165 CFM) | 25 bar (362 psi) | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-33/25K | LGCY-33/25K | 33 m³/min (1,165 CFM) | 25 bar (362 psi) | Cummins or Yuchai diesel engine | G2×1, G3/4×1 | Get a Quote | |
| LGCY-45/25-37/35V | LGCY-45/25-37/35V | 45 m³/min (1,590 CFM) | 25 bar (362 psi) | Cummins or Yuchai diesel engine | G2×1, G1×1 | Get a Quote | |
| LGCY-27/25-29/18 | LGCY-27/25-29/18 | 27 m³/min at 25 bar, 29 m³/min at 18 bar | 25 bar / 18 bar | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-26/25 | LGCY-26/25 | 26 m³/min (918 CFM) | 25 bar (362 psi) | Cummins diesel engine | G2×1, G1×1 | Get a Quote | |
| LGCY-26/25K | LGCY-26/25K | 26 m³/min (918 CFM) | 25 bar (362 psi) | Cummins / Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-25/23-27/18K | LGCY-25/23-27/18K | 25 m³/min (883 CFM) | 23 bar (334 psi) | Cummins / Yuchai diesel engine, 18K series | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-23/23-25/18K | LGCY-23/23-25/18K | 23 m³/min (812 CFM) | 23 bar (334 psi) | Cummins / Yuchai diesel engine | G1.5 × 1, G3/4 × 1 | Get a Quote | |
| LGCY-21/21-23/18 | LGCY-21/21-23/18 | 21 m³/min (740 CFM) | 21 bar (305 psi) | Cummins / Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-19/21-21/18K | LGCY-19/21-21/18K | 19 m³/min | 21 bar / 18 bar | Cummins / Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-33/35 | LGCY-33/35 | 33 m³/min (1,165 CFM) | 35 bar (507 psi) | Cummins or Yuchai diesel engine | G2×1, G1×1 | Get a Quote | |
| LGCY-33/35A | LGCY-33/35A | 33 m³/min (1,165 CFM) | 35 bar (508 psi) | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-23/23-25/18 | LGCY-23/23-25/18 | 23 m³/min | 18 bar | Cummins / Yuchai | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-19/21-21/18 | LGCY-19/21-21/18 | 21 m³/min (740 CFM) at 18 bar / 19 m³/min (670 CFM) at 21 bar | 18 bar (261 psi) / 21 bar (305 psi) | Cummins or Yuchai diesel engine, 6-cylinder, turbocharged | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-19/21-21/18X | LGCY-19/21-21/18X | 21 m³/min (740 CFM) | 18 bar (261 psi) | Cummins / Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-17/18-18/15T | LGCY-17/18-18/15T | 17 m³/min (600 CFM) | 18 bar (261 psi) | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-17/18-18/15TK | LGCY-17/18-18/15TK | 17 m³/min (600 CFM) | 18 bar (261 psi) | Cummins / Yuchai diesel engine | G1.5 × 1, G3/4 × 1 | Get a Quote | |
| LGCY-15/18-17/12T | LGCY-15/18-17/12T | — | — | — | — | Get a Quote | |
| LGCY-21/13TK | LGCY-21/13TK | 21 m³/min (740 CFM) | 13 bar (190 psi) | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-30/8TK | LGCY-30/8TK | 30 m³/min (1060 CFM) | 8 bar (116 psi) | Cummins / Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LGCY-25/10TK | LGCY-25/10TK | 25 m³/min (883 CFM) | 10 bar (145 psi) | Cummins or Yuchai diesel engine | G1.5×1, G3/4×1 | Get a Quote | |
| LCGC-29/23 (crawler base) | LCGC-29/23 (crawler base) | 29 | 2.3 | — | G2×1, G³/₄×1 | Get a Quote |
Compare 2–3 models? Tick the boxes and send them together — we will quote each one for you.
Tip: select multiple models and click “Inquire All” — the selected models are added to the quote form automatically, so you get a faster quotation.
Not sure which model fits your project? Send us your working pressure and air demand — our engineers will recommend the right one.
Main Components
- Diesel engine (Cummins or Yuchai)
- Rotary screw air end
- Air-oil separator tank
- Oil cooler and aftercooler
- Microprocessor control panel
- Intake air filter
- Battery and starting system
- Towable chassis with brakes and lights
Working Principle
The Kaishan LGCY-39/25 operates on the principle of rotary screw compression. A diesel engine drives the male and female rotors inside the air end. As the rotors mesh, they trap air and progressively reduce the volume, increasing pressure. Oil is injected into the compression chamber to lubricate, seal, and cool the process. The compressed air-oil mixture then enters a separator, where oil is removed and returned to the system, while clean air passes through a cooler and is discharged. The microprocessor control system continuously monitors discharge pressure, temperature, and engine parameters, adjusting the engine speed and compressor load to match air demand. This ensures optimal fuel efficiency and prevents over-pressurization. The portable chassis allows the unit to be easily transported to remote sites, and the weather-resistant enclosure protects components from dust and moisture. The result is a reliable, high-performance compressor capable of delivering large volumes of high-pressure air for the most demanding applications.
Detailed Features
- ▸High pressure and high flow output for demanding applications
- ▸Fuel-efficient diesel engine with low emissions
- ▸Advanced control system with automatic fault diagnosis
- ▸Durable air end with long service life
- ▸Easy access for maintenance and service
- ▸Corrosion-resistant enclosure for outdoor use
- ▸Optional cold start package for low-temperature environments
- ▸Complies with international safety and emission standards
Packaging & Shipping
The Kaishan LGCY-39/25 is shipped in a protective wax coating and securely fastened onto a flat rack or in a standard 40-foot container, depending on configuration. Each unit is wrapped in shrink film to protect against moisture and dust during transit. Loading and unloading are facilitated by forklift pockets and lifting eyes. Delivery time is typically 30-45 days after order confirmation, depending on quantity and customization. We ship from major Chinese ports such as Shanghai, Ningbo, or Qingdao. For urgent orders, expedited shipping options are available. All necessary documentation, including bill of lading, packing list, and certificate of origin, is provided for smooth customs clearance.
After-Sales Service
Kaishan offers comprehensive after-sales support for the LGCY-39/25. Each unit comes with a 12-month warranty or 2,000 operating hours, whichever comes first, covering major components. Our global service network provides 24-hour technical assistance via phone or email. We offer on-site training for operators and maintenance personnel to ensure proper use and care. Genuine spare parts are available through our worldwide distribution centers, ensuring quick delivery and optimal performance. Regular maintenance kits and service contracts are also available to keep your compressor running at peak efficiency. Our goal is to maximize uptime and minimize total cost of ownership for our customers.
Frequently Asked Questions
What are the free air delivery and working pressure of the LGCY-39/25?+
The LGCY-39/25 delivers a free air delivery of 39 m³/min (1,377 CFM) at a working pressure of 25 bar (362 psi). This combination of high flow and high pressure supports DTH hammer drilling and large-scale pneumatic operations.
What engine powers the LGCY-39/25 portable diesel screw compressor?+
The LGCY-39/25 is powered by a Cummins or Yuchai heavy-duty diesel engine. The diesel drive allows the compressor to operate in remote locations without an external power supply.
What equipment can the LGCY-39/25 support with its air supply?+
With 39 m³/min (1,377 CFM) at 25 bar (362 psi), the LGCY-39/25 supports DTH hammers, water well drilling and multiple pneumatic tools. The air outlet ports are G1.5×1 and G3/4×1.
What applications is the LGCY-39/25 suitable for?+
The LGCY-39/25 is used for water well drilling, mining and quarrying, construction and foundation work, and geothermal and exploration drilling. Its rugged portable chassis with towbar and brakes and weather-resistant enclosure suit outdoor sites.
How much does the LGCY-39/25 weigh and what are its dimensions?+
The LGCY-39/25 weighs 4,500 kg and measures 4,200 × 1,800 × 2,500 mm (L×W×H). The rugged portable chassis with towbar and brakes supports transport between sites.
How is the LGCY-39/25 packaged and shipped?+
The LGCY-39/25 is shipped in a protective wax coating and securely fastened onto a flat rack or in a standard 40-foot container, depending on configuration. Each unit is wrapped in shrink film, and forklift pockets and lifting eyes facilitate loading and unloading.
What warranty and after-sales support come with the LGCY-39/25?+
Each LGCY-39/25 comes with a 12-month warranty or 2,000 operating hours, whichever comes first, covering major components. Kaishan's global service network provides 24-hour technical assistance and genuine spare parts.
Related Insights
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Where This Machine Is Used
Is This Rig Right for My Project?
Answer seven questions about your hole, depth and rock — get a matched rig, compressor, hammer, bit and rod.
Compatible Drilling Rigs
Rigs this air supply can drive, matched on air demand and working pressure.
Best air-supply match shown first — the rest are still compatible.
Top matches
KQLG-115
- Hole range
- 90–152 mm
- Drilling depth
- 25 m
- Air demand
- 12–25 m³/min
Show 3 more compatible rigs(Other compatible rigs)
KG520
- Hole range
- 105–152 mm
- Drilling depth
- 25 m
- Air demand
- 15–22 m³/min
KG430
- Hole range
- 90–152 mm
- Drilling depth
- 25 m
- Air demand
- 13–20 m³/min
KG420B
- Hole range
- 90–130 mm
- Drilling depth
- 25 m
- Air demand
- 10–17 m³/min
Need Technical Support?
Request information and get a quote from our engineers.
Recommended System
Rig + air compressor + drilling tools matched to your project. Get pre-matching advice from our engineers.
Recommended Equipment Configuration
Matched from real machine parameters — rig, compressor, hammer, bit and rod working as one system.

KG550
- Hole range
- 115–254 mm
Why matched
Covers the required 15 bar / 35 m³/min air demand (rated 25 bar / 39 m³/min).

K8
- Hole range
- 195–254
- Air flow
- 12–31 m³/min
- Working pressure
- 10+ bar
- Bit shank
- K8** / COP84/DHD380
Why matched
Hole range 195–254 mm covers your requirement 115–254 mm.

K6
- Hole range
- 152–300
- Pressure class
- 高风压 (High pressure)
Why matched
Hole range 152–300 mm covers your requirement 115–254 mm.

76mm Drill Rods
- Rod spec
- Φ76 / Φ89 / Φ102 mm
Why matched
Matches the rig's official rod specification Φ76 / Φ89 / Φ102 mm.
System requirement: 25 bar / 39 m³/min · 115–254 mm











