📦 High-Pressure Air Compressors
Kaishan LGCY-33/25 Portable Diesel Screw Compressor
Model: LGCY-33/25
The Kaishan LGCY-33/25 portable diesel screw compressor delivers 33 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 mining, water well drilling, and large-scale construction, this diesel-driven rotary screw air compressor combines high pressure with high flow to support DTH hammers and multi-tool operations. Powered by a reliable Cummins or Yuchai diesel engine, it ensures stable performance in remote areas without electricity. The LGCY-33/25 features an advanced screw airend, efficient cooling system, and intelligent control panel for safe, fuel-efficient operation. Its rugged chassis and weather-resistant canopy allow easy transport and all-weather use. As a B2B solution, it reduces downtime, lowers cost per cubic meter, and meets stringent emission standards. Whether you need reliable air for drilling, sandblasting, or pipeline testing, the Kaishan LGCY-33/25 is engineered for productivity and durability.
Best For
Technical Specifications
| Model | LGCY-33/25 |
| Free Air Delivery | 33 m³/min (1,165 CFM) |
| Working Pressure | 25 bar (362 psi) |
| Engine | Cummins or Yuchai diesel engine |
| 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
33 m³/min (1,165 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 33 m³/min (1,165 CFM) for large-scale operations
Working pressure of 25 bar (362 psi) suitable for DTH drilling and high-pressure applications
Fuel-efficient Cummins or Yuchai diesel engine with low emissions
Advanced microprocessor control system with automatic protection and fault diagnostics
Heavy-duty portable chassis with pneumatic tires and leaf spring suspension for easy towing
Weather-resistant canopy for reliable operation in harsh environments
Efficient cooling system designed for high ambient temperatures
Easy maintenance access with large service doors and centralized filters
Applications
📍 Water Well Drilling
High-pressure air is essential for DTH hammer drilling in water well construction, where penetration rate and hole cleanliness determine project success.
Solution: The LGCY-33/25 delivers 33 m³/min at 25 bar, providing ample air volume and pressure to drive large DTH hammers efficiently, reducing drilling time and fuel consumption per meter.
📍 Mining and Quarrying
Mining operations require reliable air power for rock drills, pneumatic loading, and ventilation in remote pits.
Solution: With its rugged construction and diesel independence, the LGCY-33/25 powers multiple pneumatic tools simultaneously, ensuring continuous production even in off-grid locations.
📍 Construction and Infrastructure
Large construction projects need high-volume air for sandblasting, concrete spraying, and foundation work.
Solution: The compressor's high flow and pressure support heavy-duty sandblasting and shotcrete applications, while its mobility allows quick relocation across job sites.
📍 Pipeline Testing and Oil & Gas
Pipeline pressure testing and oil/gas exploration demand precise, high-pressure air for purging, testing, and pneumatic controls.
Solution: The LGCY-33/25 provides stable 25 bar air for pipeline testing and supports upstream operations with reliable, portable power.
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-33/25This model | 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-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
- Rotary screw airend
- Cummins or Yuchai diesel engine
- Microprocessor control panel
- Oil separator tank
- Air aftercooler and oil cooler
- Heavy-duty chassis with suspension
- Weather-resistant canopy
- Intake air filter and oil filter
Working Principle
The Kaishan LGCY-33/25 operates on the rotary screw principle, where two intermeshing helical rotors compress air continuously. Air enters through an intake filter and is mixed with oil for lubrication and sealing. The rotors reduce the volume between them, increasing pressure. The compressed air-oil mixture then passes through a separator, where oil is removed and returned to the system, while clean air goes to the aftercooler and outlet. The diesel engine drives the airend via a coupling or belt, and the control system regulates engine speed and air intake to match demand, optimizing fuel use. A cooling system maintains proper temperatures, and safety devices monitor pressure and temperature to prevent damage. This design ensures smooth, pulse-free air delivery with high efficiency and durability, ideal for continuous heavy-duty use.
Detailed Features
- ▸High pressure and high flow combination for demanding applications
- ▸Fuel-efficient diesel engine with low emissions
- ▸Advanced control system with automatic shutdown protection
- ▸Durable rotary screw airend for long service life
- ▸Portable design with highway-speed towing capability
- ▸All-weather operation with robust canopy and cooling system
- ▸Easy maintenance with accessible service points
- ▸Global service and spare parts support from Kaishan
Packaging & Shipping
The Kaishan LGCY-33/25 is shipped as a complete unit on a heavy-duty skid or trailer, wrapped in protective film and secured with steel straps. It is loaded into a 40-foot flat rack or open-top container for sea transport. For bulk orders, multiple units can be accommodated in break-bulk vessels. Delivery time is typically 30-45 days after order confirmation, depending on quantity and destination. Main export ports include Shanghai, Ningbo, and Qingdao. All units are inspected and tested before shipment, and necessary documentation (bill of lading, packing list, certificate of origin) is provided.
After-Sales Service
Kaishan offers a comprehensive after-sales service package for the LGCY-33/25. 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 installation and commissioning guidance, as well as operator training either at our factory or via video. A global network of authorized service centers ensures quick access to genuine spare parts and qualified technicians. Regular maintenance kits and consumables are stocked for fast delivery. Our goal is to maximize uptime and reduce total cost of ownership for our B2B customers.
Frequently Asked Questions
What is the free air delivery and working pressure of the LGCY-33/25?+
The LGCY-33/25 delivers a free air delivery of 33 m³/min (1,165 CFM) at a working pressure of 25 bar (362 psi). This high-pressure, high-flow combination supports DTH hammers and multi-tool operations. It is one of the most powerful models in its class.
What engine powers the LGCY-33/25 portable diesel screw compressor?+
The LGCY-33/25 is powered by a Cummins or Yuchai diesel engine. The diesel-driven rotary screw air compressor operates in remote areas without electricity. The engine is designed for fuel-efficient operation with low emissions.
What equipment can the LGCY-33/25 support?+
With 33 m³/min (1,165 CFM) of free air at 25 bar (362 psi), the LGCY-33/25 supports DTH hammers and multi-tool operations. The air outlet ports are G1.5×1 and G3/4×1. It is suited to high-pressure applications such as DTH drilling.
What applications is the LGCY-33/25 suitable for?+
The LGCY-33/25 is designed for water well drilling, mining and quarrying, construction and infrastructure, and pipeline testing and oil and gas. Its rugged chassis and weather-resistant canopy allow easy transport and all-weather use. The cooling system is designed for high ambient temperatures.
How is the LGCY-33/25 packaged and shipped?+
The LGCY-33/25 is shipped as a complete unit on a heavy-duty skid or trailer, wrapped in protective film and secured with steel straps. It is loaded into a 40-foot flat rack or open-top container for sea transport. Delivery time is typically 30-45 days after order confirmation, depending on quantity and destination.
What warranty and after-sales service come with the LGCY-33/25?+
Each LGCY-33/25 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 installation and commissioning guidance and operator training are provided.
What are the dimensions and weight of the LGCY-33/25?+
The LGCY-33/25 measures 4,200 × 1,800 × 2,500 mm (L×W×H) and weighs 4,500 kg. The heavy-duty portable chassis has pneumatic tires and leaf spring suspension for easy towing. The weather-resistant canopy supports reliable operation in harsh environments.
Related Insights
Related Projects
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
