Kaishan LGCY-39/25 Portable Diesel Screw Compressor - image 1

📦 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.

Technical Specifications

ModelLGCY-39/25
Free Air Delivery39 m³/min (1,377 CFM)
Working Pressure25 bar (362 psi)
EngineCummins or Yuchai heavy-duty diesel
Air Outlet PortG1.5×1, G3/4×1
Weight4,500 kg
Dimension (L×W×H)4,200 × 1,800 × 2,500 mm

Product Details

## Overview The Kaishan LGCY-39/25 is a heavy-duty portable diesel screw compressor engineered for high-pressure, high-flow applications. With a free air delivery of 39 m³/min (approximately 1,377 CFM) at a working pressure of 25 bar (362 psi), it is specifically designed to meet the rigorous demands of deep hole drilling, mining, and large construction projects. This model bridges the gap between medium and high-pressure compressors, offering an ideal solution for DTH (down-the-hole) hammer drilling and other operations requiring substantial air volume at elevated pressure. ## Technical Features At the heart of the LGCY-39/25 is a high-efficiency rotary screw air end, precision-machined for durability and optimal compression. The compressor is powered by a reliable diesel engine, commonly a Cummins or Yuchai heavy-duty unit, ensuring dependable performance even in remote locations without access to electricity. The cooling system is designed for high ambient temperatures, allowing continuous operation in harsh climates. A microprocessor control panel provides real-time monitoring of pressure, temperature, and engine parameters, with automatic shutdown protection for safe operation. The unit is mounted on a rugged chassis with a towbar and brakes, making it easily transportable by truck or tractor. Additionally, the enclosure is designed for sound attenuation and weather resistance, protecting internal components while reducing noise emissions. ## Applications The LGCY-39/25 excels in applications that demand both high pressure and high air volume. It is widely used in water well drilling, geothermal drilling, and mining exploration, where DTH hammers require consistent high-pressure air to penetrate hard rock formations. In construction, it supports pile driving, foundation drilling, and site cleaning. The compressor can also power multiple pneumatic tools simultaneously, such as breakers, rock drills, and sandblasting equipment. Its portability makes it suitable for rental fleets and contractors who need to move equipment between job sites frequently. With its robust design and reliable performance, the LGCY-39/25 ensures maximum productivity and minimal downtime, even in the most challenging environments.

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 engineer

Key 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.

☑ModelModelFree Air DeliveryWorking PressureEngineAir Outlet PortInquire
LGCY-39/25This modelLGCY-39/2539 m³/min (1,377 CFM)25 bar (362 psi)Cummins or Yuchai heavy-duty dieselG1.5×1, G3/4×1Get a Quote
LGCY-39/25ALGCY-39/25A39 m³/min25 barCummins / Yuchai diesel engineG2×1, G1×1Get a Quote
LGCY-33/25LGCY-33/2533 m³/min (1,165 CFM)25 bar (362 psi)Cummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-33/25KLGCY-33/25K33 m³/min (1,165 CFM)25 bar (362 psi)Cummins or Yuchai diesel engineG2×1, G3/4×1Get a Quote
LGCY-45/25-37/35VLGCY-45/25-37/35V45 m³/min (1,590 CFM)25 bar (362 psi)Cummins or Yuchai diesel engineG2×1, G1×1Get a Quote
LGCY-27/25-29/18LGCY-27/25-29/1827 m³/min at 25 bar, 29 m³/min at 18 bar25 bar / 18 barCummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-26/25LGCY-26/2526 m³/min (918 CFM)25 bar (362 psi)Cummins diesel engineG2×1, G1×1Get a Quote
LGCY-26/25KLGCY-26/25K26 m³/min (918 CFM)25 bar (362 psi)Cummins / Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-25/23-27/18KLGCY-25/23-27/18K25 m³/min (883 CFM)23 bar (334 psi)Cummins / Yuchai diesel engine, 18K seriesG1.5×1, G3/4×1Get a Quote
LGCY-23/23-25/18KLGCY-23/23-25/18K23 m³/min (812 CFM)23 bar (334 psi)Cummins / Yuchai diesel engineG1.5 × 1, G3/4 × 1Get a Quote
LGCY-21/21-23/18LGCY-21/21-23/1821 m³/min (740 CFM)21 bar (305 psi)Cummins / Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-19/21-21/18KLGCY-19/21-21/18K19 m³/min21 bar / 18 barCummins / Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-33/35LGCY-33/3533 m³/min (1,165 CFM)35 bar (507 psi)Cummins or Yuchai diesel engineG2×1, G1×1Get a Quote
LGCY-33/35ALGCY-33/35A33 m³/min (1,165 CFM)35 bar (508 psi)Cummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-23/23-25/18LGCY-23/23-25/1823 m³/min18 barCummins / YuchaiG1.5×1, G3/4×1Get a Quote
LGCY-19/21-21/18LGCY-19/21-21/1821 m³/min (740 CFM) at 18 bar / 19 m³/min (670 CFM) at 21 bar18 bar (261 psi) / 21 bar (305 psi)Cummins or Yuchai diesel engine, 6-cylinder, turbochargedG1.5×1, G3/4×1Get a Quote
LGCY-19/21-21/18XLGCY-19/21-21/18X21 m³/min (740 CFM)18 bar (261 psi)Cummins / Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-17/18-18/15TLGCY-17/18-18/15T17 m³/min (600 CFM)18 bar (261 psi)Cummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-17/18-18/15TKLGCY-17/18-18/15TK17 m³/min (600 CFM)18 bar (261 psi)Cummins / Yuchai diesel engineG1.5 × 1, G3/4 × 1Get a Quote
LGCY-15/18-17/12TLGCY-15/18-17/12T————Get a Quote
LGCY-21/13TKLGCY-21/13TK21 m³/min (740 CFM)13 bar (190 psi)Cummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-30/8TKLGCY-30/8TK30 m³/min (1060 CFM)8 bar (116 psi)Cummins / Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LGCY-25/10TKLGCY-25/10TK25 m³/min (883 CFM)10 bar (145 psi)Cummins or Yuchai diesel engineG1.5×1, G3/4×1Get a Quote
LCGC-29/23 (crawler base)LCGC-29/23 (crawler base)292.3—G2×1, G³/₄×1Get 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

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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

Full range

KG550

Hole range
115–254 mm
Air demand
15–35 m³/min
Full range

KG940A

Hole range
105–203 mm
Air demand
15–26 m³/min
Full range

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)
Full range

KG520

Hole range
105–152 mm
Drilling depth
25 m
Air demand
15–22 m³/min
Full range

KG430

Hole range
90–152 mm
Drilling depth
25 m
Air demand
13–20 m³/min
Full range

KG420B

Hole range
90–130 mm
Drilling depth
25 m
Air demand
10–17 m³/min

Need Technical Support?

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Recommended System

Rig + air compressor + drilling tools matched to your project. Get pre-matching advice from our engineers.

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Recommended Equipment Configuration

Matched from real machine parameters — rig, compressor, hammer, bit and rod working as one system.

Request This Configuration
KG550
Drilling RigParameter matched

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
DTH HammerParameter matched

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
DTH BitParameter matched

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
Drill RodParameter matched

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

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