📦 High-Pressure Air Compressors
Kaishan LGCY-39/25A Portable Diesel Screw Air Compressor
Model: LGCY-39/25A
The Kaishan LGCY-39/25A portable diesel screw air compressor delivers 39 m³/min of free air at 25 bar working pressure, making it one of the most powerful models in the Kaishan LGCY series for high-demand industrial applications. Designed for drilling, mining, and heavy construction, this diesel-powered unit combines a robust screw airend with a reliable diesel engine to ensure continuous, efficient operation in the most challenging environments. Its high pressure and large air delivery make it ideal for deep-hole drilling, water well drilling, and large-scale sandblasting. The LGCY-39/25A features an advanced control system, excellent fuel efficiency, and easy maintenance access. With a sturdy chassis and optional wheels or skid mounting, it offers superior mobility on job sites. Kaishan's global service network ensures reliable support and genuine spare parts availability. This compressor is engineered to meet international standards, providing a dependable solution for contractors seeking high productivity and low total cost of ownership.
Best For
Technical Specifications
| Model | LGCY-39/25A |
| Free Air Delivery | 39 m³/min |
| Working Pressure | 25 bar |
| Engine | Cummins / Yuchai diesel engine |
| Air Outlet Port | G2×1, G1×1 |
| Weight | 5,500 kg |
| Dimension (L×W×H) | 4,200 × 1,900 × 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
Free Air Delivery
39 m³/min
Weight
5,500 kg
Dimension (L×W×H)
4,200 × 1,900 × 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) for large-scale operations
Working pressure of 25 bar (362 psi) suitable for deep-hole drilling
Fuel-efficient diesel engine with low emissions
Advanced control system with automatic shutdown protection
Heavy-duty air filtration and cooling system for extended service life
Portable design with robust chassis for easy mobility on job sites
Applications
📍 Water Well Drilling
High-pressure air is required to drive down-the-hole hammers for deep water well drilling.
Solution: The LGCY-39/25A provides consistent 25 bar pressure and large air volume to ensure fast penetration and efficient hole cleaning.
📍 Mining and Quarrying
Mining operations need reliable air compressors for drilling blast holes and powering pneumatic tools.
Solution: With its high capacity and rugged construction, this compressor supports continuous operation in dusty and remote mining sites.
📍 Construction and Foundation
Foundation piling and ground engineering often require high-pressure air for drilling and soil stabilization.
Solution: The LGCY-39/25A delivers the necessary pressure and flow to operate multiple pneumatic tools simultaneously, boosting productivity.
📍 Sandblasting and Surface Preparation
Large-scale sandblasting demands a high volume of dry, oil-free air at consistent pressure.
Solution: Equipped with effective oil separation and aftercooling, this compressor provides clean, dry air for efficient surface preparation.
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-39/25AThis model | LGCY-39/25A | 39 m³/min | 25 bar | Cummins / Yuchai diesel engine | G2×1, G1×1 | Get a Quote | |
| LGCY-39/25 | 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-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)
- Screw airend (Kaishan proprietary)
- Air-oil separator tank
- Cooling system (radiator and oil cooler)
- Intelligent control panel
- Heavy-duty air filter
- Oil filter and separator elements
- Chassis with optional wheels or skid
Working Principle
The Kaishan LGCY-39/25A operates on the principle of positive displacement rotary screw compression. A diesel engine drives the male and female rotors inside the airend. As the rotors rotate, they trap air between their lobes and the casing, progressively reducing the volume and increasing the pressure. Oil is injected into the compression chamber to lubricate the rotors, seal clearances, and absorb heat. The compressed air-oil mixture then passes through a separator, where oil is removed and returned to the system. The clean, high-pressure air is cooled by an aftercooler before being discharged. An intelligent control system monitors parameters such as discharge pressure, temperature, and engine speed, automatically adjusting the engine throttle to match air demand, thereby optimizing fuel consumption. Safety features include high-temperature and low-oil-level shutdowns, ensuring reliable and safe operation.
Detailed Features
- ▸High-pressure capability up to 25 bar
- ▸Large free air delivery of 39 m³/min
- ▸Fuel-efficient diesel engine with low emissions
- ▸Advanced electronic control and monitoring
- ▸Durable and weather-resistant enclosure
- ▸Easy maintenance access doors
- ▸Optional mobility kits for towing or skid mounting
- ▸Global service and spare parts support
Packaging & Shipping
The Kaishan LGCY-39/25A is typically shipped in a protective enclosure suitable for sea transport. It is secured on a flat rack or in a standard 40-foot container, depending on configuration and destination. Each unit is wrapped with anti-corrosion film and fastened with heavy-duty straps. Delivery time is generally 30-45 days after order confirmation, depending on production schedule. Ports of shipment include Shanghai, Ningbo, or other major Chinese ports as requested. Customers can also arrange for customized packaging and shipping solutions.
After-Sales Service
Kaishan offers comprehensive after-sales service for the LGCY-39/25A. Each unit comes with a 12-month warranty or 2,000 operating hours (whichever comes first) covering major components. A 24-hour technical support hotline is available for troubleshooting and emergency assistance. We provide on-site training for operators and maintenance personnel upon request. Genuine spare parts are available through our global distribution network, ensuring minimal downtime. Regular maintenance kits and service contracts can be tailored to customer needs.
Frequently Asked Questions
What are the free air delivery and working pressure of the LGCY-39/25A?+
The LGCY-39/25A delivers 39 m³/min of free air delivery at a working pressure of 25 bar. These figures place it among the most powerful models in the Kaishan LGCY series. The combination supports high-demand industrial applications such as deep-hole drilling.
What engine powers the LGCY-39/25A?+
The LGCY-39/25A is powered by a Cummins or Yuchai diesel engine. The diesel engine allows autonomous operation in remote locations without access to electricity. It is described as fuel-efficient with low emissions.
What air supply does the LGCY-39/25A provide for drilling equipment?+
The LGCY-39/25A supplies 39 m³/min of free air at 25 bar working pressure through its G2×1 and G1×1 air outlet ports. This air supply suits DTH hammers and other high-pressure drilling tools. The 25 bar working pressure is suitable for deep-hole drilling.
What applications is the LGCY-39/25A suitable for?+
The LGCY-39/25A is used for water well drilling, mining and quarrying, construction and foundation work, and sandblasting and surface preparation. Its 39 m³/min free air delivery and 25 bar working pressure support large-scale operations. The portable chassis allows mobility on job sites.
How portable is the LGCY-39/25A?+
The LGCY-39/25A weighs 5,500 kg and measures 4,200 × 1,900 × 2,500 mm. It has a robust chassis for easy mobility on job sites. Optional mobility kits are available for towing or skid mounting.
What maintenance features does the LGCY-39/25A have?+
The LGCY-39/25A has easy maintenance access doors and a heavy-duty air filtration and cooling system for extended service life. An advanced control system provides automatic shutdown protection. A durable and weather-resistant enclosure protects the unit.
How is the LGCY-39/25A packaged and shipped?+
The LGCY-39/25A is shipped in a protective enclosure suitable for sea transport, secured on a flat rack or in a standard 40-foot container depending on configuration and destination. Each unit is wrapped with anti-corrosion film and fastened with heavy-duty straps. Delivery time is generally 30-45 days after order confirmation.
What warranty and after-sales support come with the LGCY-39/25A?+
The LGCY-39/25A comes with a 12-month warranty or 2,000 operating hours, whichever comes first, covering major components. A 24-hour technical support hotline is available for troubleshooting and emergency assistance. On-site training for operators and maintenance personnel is provided upon request.
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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
