📦 High-Pressure Air Compressors
Kaishan LGCY-33/25K Portable Diesel Screw Compressor
Model: LGCY-33/25K
The Kaishan LGCY-33/25K portable diesel screw compressor delivers 33 m³/min of free air at 25 bar working pressure, making it one of the most powerful models in Kaishan's LGCY series for heavy-duty industrial applications. Powered by a reliable Cummins or Yuchai diesel engine, this two-stage screw compressor is engineered for continuous operation in mining, water well drilling, and large-scale construction projects. Its robust chassis, four-wheel design, and advanced cooling system ensure stable performance in extreme environments from -20°C to 50°C. The LGCY-33/25K features an intelligent control panel with auto shutdown protection, high-efficiency air filtration, and low fuel consumption, reducing operating costs significantly. With a compact footprint and easy maintenance access, it is the ideal choice for contractors seeking a dependable high-pressure, high-flow diesel screw compressor for demanding jobsites worldwide.
Best For
Technical Specifications
| Model | LGCY-33/25K |
| Free Air Delivery | 33 m³/min (1,165 CFM) |
| Working Pressure | 25 bar (362 psi) |
| Engine | Cummins or Yuchai diesel engine |
| Air Outlet Port | G2×1, G3/4×1 |
| Weight | 5,800 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 (362 psi)
Free Air Delivery
33 m³/min (1,165 CFM)
Weight
5,800 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
33 m³/min free air delivery at 25 bar working pressure for high-demand applications
Two-stage rotary screw airend for high efficiency and low energy consumption
Reliable Cummins or Yuchai diesel engine with low fuel consumption and emissions compliance
Intelligent control panel with auto shutdown and real-time monitoring
Rugged four-wheel chassis and weather-resistant canopy for mobile outdoor use
Wide operating temperature range from -20°C to 50°C for extreme environments
Applications
📍 Water Well Drilling
High-pressure air is essential for deep water well drilling, driving down-the-hole hammers and clearing cuttings.
Solution: The LGCY-33/25K provides 33 m³/min at 25 bar, ensuring efficient drilling in hard rock formations and deep aquifers.
📍 Mining and Quarrying
Mining operations require reliable compressed air for pneumatic tools, drilling, and ventilation.
Solution: With its high flow and pressure, this compressor powers multiple pneumatic drills simultaneously, boosting productivity in open-pit and underground mines.
📍 Construction and Infrastructure
Large construction projects need compressed air for shotcrete, sandblasting, and foundation work.
Solution: The LGCY-33/25K delivers consistent air supply for shotcrete machines and sandblasting equipment, even in remote sites without electricity.
📍 Oil and Gas Exploration
Exploration activities often require high-pressure air for drilling and well stimulation.
Solution: This diesel screw compressor offers the pressure and flow needed for air drilling and other oilfield services, with mobility for rapid deployment.
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-33/25KThis model | 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-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-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-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-39/25A | LGCY-39/25A | 39 m³/min | 25 bar | Cummins / Yuchai diesel engine | G2×1, G1×1 | 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-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-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-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-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-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
- Two-stage rotary screw airend
- Cummins or Yuchai diesel engine
- Intelligent control panel
- Air-oil separator tank
- Cooling system (radiator and oil cooler)
- Heavy-duty chassis with four wheels
- Weather-resistant canopy
- Air filtration and intake system
Working Principle
The Kaishan LGCY-33/25K operates on the principle of rotary screw compression, using two intermeshing helical screws (rotors) to compress air. The diesel engine drives the male rotor, which in turn drives the female rotor. As the rotors turn, air is trapped between the lobes and the casing, and as the space decreases, the air is compressed. The compressed air then passes through a separator to remove oil, and a cooler to reduce temperature before being discharged. This two-stage design means the air is compressed in two steps, with intercooling between stages, which improves efficiency and reduces thermal load. The intelligent control system monitors discharge pressure and engine parameters, adjusting the engine speed to match air demand, thereby saving fuel. The result is a continuous, reliable supply of high-pressure air for demanding applications.
Detailed Features
- ▸High free air delivery of 33 m³/min for maximum productivity
- ▸25 bar working pressure suitable for deep drilling and high-pressure tools
- ▸Two-stage compression for energy efficiency and lower operating costs
- ▸Diesel engine from Cummins or Yuchai for reliability and easy service
- ▸Intelligent control with auto shutdown and fault diagnostics
- ▸Rugged mobile design with four wheels and towbar for easy transport
- ▸Wide ambient temperature range from -20°C to 50°C
- ▸Easy maintenance access with large doors and centralized service points
Packaging & Shipping
The Kaishan LGCY-33/25K is shipped in a protective wax coating and securely fastened onto a flat rack or in a 40-foot container, depending on configuration. Each unit is wrapped with shrink film to protect against moisture and dust during ocean transport. Standard packaging includes the compressor, tool kit, and operation manual. We offer flexible shipping terms: FOB, CIF, or EXW. Delivery time is typically 30-45 days after order confirmation, depending on quantity and customization. Ports of loading include Shanghai, Ningbo, or Qingdao, China. For urgent orders, expedited production and air freight can be arranged at additional cost.
After-Sales Service
Kaishan provides comprehensive after-sales support for the LGCY-33/25K. Each compressor comes with a 12-month warranty or 2,000 operating hours, whichever comes first, covering major components. Our global service network offers 24-hour technical assistance via phone or email. We provide on-site installation and commissioning services upon request, as well as operator training to ensure safe and efficient use. Genuine spare parts are available from regional warehouses, with fast delivery to minimize downtime. Regular maintenance kits and extended warranty options are also offered. Our dedicated team is committed to keeping your equipment running at peak performance.
Frequently Asked Questions
What are the free air delivery and working pressure of the LGCY-33/25K?+
The LGCY-33/25K delivers a free air delivery of 33 m³/min (1,165 CFM) at a working pressure of 25 bar (362 psi). These figures make it a high-pressure, high-flow unit in the LGCY series. It is built for continuous duty in demanding applications.
What engine powers the LGCY-33/25K portable diesel screw compressor?+
The LGCY-33/25K is powered by a Cummins or Yuchai diesel engine. The diesel engine allows operation in remote locations without access to grid power. It is matched to the two-stage rotary screw airend.
What equipment can run on the air supply of the LGCY-33/25K?+
With 33 m³/min (1,165 CFM) at 25 bar (362 psi), the LGCY-33/25K supplies air for high-pressure drilling tools such as the DTH hammer. The air outlet ports are G2×1 and G3/4×1. This output suits deep drilling and high-pressure tools.
Which applications and sites is the LGCY-33/25K suitable for?+
The LGCY-33/25K is used in water well drilling, mining and quarrying, construction and infrastructure, and oil and gas exploration. Its four-wheel chassis and weather-resistant canopy support mobile outdoor use. It operates in ambient temperatures from -20°C to 50°C.
How is the LGCY-33/25K transported and shipped?+
The LGCY-33/25K weighs 5,800 kg and measures 4,200 × 1,900 × 2,500 mm. It is shipped with a protective wax coating, fastened onto a flat rack or in a 40-foot container depending on configuration. Each unit is wrapped with shrink film, and standard packaging includes the compressor, tool kit, and operation manual.
What warranty and after-sales support come with the LGCY-33/25K?+
The LGCY-33/25K comes with a 12-month warranty or 2,000 operating hours, whichever comes first, covering major components. Kaishan's global service network offers 24-hour technical assistance via phone or email. On-site installation, commissioning, and operator training are available upon request.
What maintenance access does the LGCY-33/25K offer?+
The LGCY-33/25K has easy maintenance access through large doors and centralized service points. Its intelligent control panel provides auto shutdown and fault diagnostics. The two-stage rotary screw airend supports low energy consumption.
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
KG520
- Hole range
- 105–152 mm
- Drilling depth
- 25 m
- Air demand
- 15–22 m³/min
Show 3 more compatible rigs(Other compatible rigs)
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
Marked “lower range only” means the rig's upper air demand exceeds this unit's 33 m³/min, so it works with smaller hole sizes or a second compressor.
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 lower range of the required 15 bar / 35 m³/min air demand — this unit is rated 25 bar / 33 m³/min, so pair it with smaller hole sizes or add a second compressor.
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 / 33 m³/min · 115–254 mm
