📦 Diesel Screw Air Compressors
Kaishan KSCY-400/14.5K Diesel Screw Air Compressor
Model: KSCY-400/14.5K
The Kaishan KSCY-400/14.5K diesel screw air compressor delivers 400 CFM free air delivery at 14.5 bar working pressure, powered by a reliable diesel engine for construction, mining, and water well drilling. Designed as a heavy-duty portable diesel screw compressor, it provides continuous, oil-lubricated rotary screw performance in remote sites without electricity. Its compact structure, high ambient temperature adaptability, and easy maintenance make it ideal for powering pneumatic tools, DTH hammers, and sandblasting equipment. With a robust air end, efficient cooling system, and user-friendly control panel, the KSCY-400/14.5K ensures stable air output and low fuel consumption. It is a cost-effective solution for contractors seeking a dependable diesel air compressor for tough jobs.
Technical Specifications
| Model | KSCY-400/14.5K |
| Free Air Delivery | 400 CFM (11.3 m³/min) |
| Working Pressure | 14.5 bar (210 psi) |
| Engine | Diesel engine, 6-cylinder, 110 kW |
| Air Outlet Port | 2 × 3/4 inch or 1 × 1 inch |
| Weight | 2200 kg |
| Dimension (L×W×H) | 3000 × 1500 × 1800 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
14.5 bar (210 psi)
Free Air Delivery
400 CFM (11.3 m³/min)
Weight
2200 kg
Dimension (L×W×H)
3000 × 1500 × 1800 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
400 CFM free air delivery at 14.5 bar working pressure
Fuel-efficient diesel engine for off-grid operation
Heavy-duty rotary screw air end with long service life
Advanced microprocessor control with fault diagnosis
High ambient temperature capability up to 50°C
Compact and portable design for easy transport
Applications
📍 Water Well Drilling
Provides high-pressure air for DTH hammers in water well drilling.
Solution: The 14.5 bar pressure and 400 CFM flow efficiently drive DTH hammers, ensuring fast penetration in hard rock formations.
📍 Mining and Quarrying
Powers pneumatic tools and drilling equipment in mining operations.
Solution: Reliable diesel power eliminates the need for electricity, making it ideal for remote mining sites.
📍 Construction
Supplies air for pneumatic breakers, sandblasting, and concrete spraying.
Solution: Continuous duty operation and robust design handle the toughest construction environments.
📍 Pipeline Testing
Used for pipeline cleaning, testing, and drying.
Solution: Oil-lubricated screw technology delivers consistent air flow for pipeline maintenance.
KSCY Series Models
Compare specifications across the series to find the right model.
| ☑ | Model | Model | Free Air Delivery | Working Pressure | Engine | Air Outlet Port | Inquire |
|---|---|---|---|---|---|---|---|
| KSCY-400/14.5KThis model | KSCY-400/14.5K | 400 CFM (11.3 m³/min) | 14.5 bar (210 psi)★ | Diesel engine, 6-cylinder, 110 kW | 2 × 3/4 inch or 1 × 1 inch | Get a Quote | |
| KSCY-550/13 | KSCY-550/13 | 550 CFM (15.6 m³/min) | 13 bar (188 psi) | Cummins QSB5.9 or equivalent, 132 kW | 2 × 3/4" or 1 × 1" | Get a Quote | |
| KSCY-220/8X | KSCY-220/8X | 22 m³/min | 8 bar (116 psi) | Weichai/Deutz diesel, 75-90 kW | G1.5×1, G3/4×1 | Get a Quote | |
| KSCY-175/8 | KSCY-175/8 | 5.0 m³/min (175 CFM) | 8 bar (116 psi) | Cummins / Yuchai, 52 kW (70 HP) | G1-1/4 × 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
- Rotary screw air end
- Air filter
- Oil separator tank
- Cooling system (radiator and fan)
- Microprocessor control panel
- Discharge valve and piping
- Skid or wheeled chassis
Working Principle
The Kaishan KSCY-400/14.5K operates on the rotary screw principle. A diesel engine drives the male and female rotors inside the air end. As the rotors mesh, air is trapped in the spaces between them and progressively compressed as the volume decreases. Oil is injected into the compression chamber to lubricate, seal, and cool the process. The compressed air-oil mixture then passes through a separator, where oil is removed and returned to the system. The clean air is cooled by an aftercooler before exiting through the discharge valve. A microprocessor controller regulates engine speed and compressor loading to match air demand, optimizing fuel efficiency. This continuous process ensures a steady supply of compressed air with minimal pulsation.
Detailed Features
- ▸High efficiency rotary screw air end
- ▸Fuel-efficient diesel engine
- ▸Advanced microprocessor control
- ▸High ambient temperature adaptability
- ▸Heavy-duty air filtration
- ▸Large capacity oil separator
- ▸Easy maintenance access
- ▸Compact and portable design
Packaging & Shipping
The Kaishan KSCY-400/14.5K is shipped in a protective wooden crate or steel frame, suitable for ocean transport. It can be loaded into a 20ft or 40ft container depending on quantity. Standard delivery time is 30-45 days after order confirmation. Ports of shipment include Shanghai, Ningbo, or Qingdao, China. Custom packaging and labeling are available upon request.
After-Sales Service
Kaishan offers a 12-month warranty on the KSCY-400/14.5K. Our global service network provides 24-hour technical support, on-site training, and genuine spare parts. We ensure quick response to any inquiries and offer maintenance kits to keep your compressor running smoothly.
Frequently Asked Questions
What are the free air delivery and working pressure of the KSCY-400/14.5K?+
The KSCY-400/14.5K delivers 400 CFM (11.3 m³/min) of free air delivery at a working pressure of 14.5 bar (210 psi). These figures make it suitable for medium to high-pressure air demand. The air outlet is available as 2 × 3/4 inch or 1 × 1 inch ports.
What engine powers the KSCY-400/14.5K diesel screw air compressor?+
The KSCY-400/14.5K is powered by a 6-cylinder diesel engine rated at 110 kW. The diesel engine allows off-grid operation where no electricity supply is available. It is designed for fuel-efficient performance on remote sites.
Can the KSCY-400/14.5K run a DTH hammer for water well drilling?+
Yes, the KSCY-400/14.5K provides 400 CFM at 14.5 bar, which suits DTH hammers, water well drilling rigs and pneumatic construction tools. Its oil-lubricated rotary screw air end delivers continuous air output for drilling work. It is built for sites without grid power.
What applications is the KSCY-400/14.5K suitable for?+
The KSCY-400/14.5K is used in water well drilling, mining and quarrying, construction, and pipeline testing. It powers pneumatic tools, DTH hammers and sandblasting equipment. The compact and portable design supports transport between remote job sites.
What are the dimensions and weight of the KSCY-400/14.5K?+
The KSCY-400/14.5K measures 3000 × 1500 × 1800 mm (L×W×H) and weighs 2200 kg. Its compact and portable structure is designed for easy transport. The unit can operate in ambient temperatures up to 50°C.
How is the KSCY-400/14.5K packaged and shipped?+
The KSCY-400/14.5K is shipped in a protective wooden crate or steel frame suitable for ocean transport. It can be loaded into a 20ft or 40ft container depending on quantity, with a standard delivery time of 30-45 days after order confirmation. Ports of shipment include Shanghai, Ningbo, or Qingdao, China, and custom packaging and labeling are available upon request.
What warranty and after-sales support come with the KSCY-400/14.5K?+
Kaishan offers a 12-month warranty on the KSCY-400/14.5K. The global service network provides 24-hour technical support, on-site training, and genuine spare parts. Maintenance kits are available to keep the compressor running smoothly.
What maintenance features does the KSCY-400/14.5K offer?+
The KSCY-400/14.5K has easy maintenance access, heavy-duty air filtration and a large capacity oil separator. Its compression chamber is lubricated with premium synthetic oil for smooth operation and long service life. The microprocessor control panel provides automatic start/stop and fault diagnosis.
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
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 11.3 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.
KG420B
- Hole range
- 90–130 mm
- Drilling depth
- 25 m
Why matched
Covers the lower range of the required 10 bar / 17 m³/min air demand — this unit is rated 14.5 bar / 11.3 m³/min, so pair it with smaller hole sizes or add a second compressor.
K40
- Hole range
- 105–130
- Air flow
- 5–14 m³/min
- Working pressure
- 12+ bar
- Bit shank
- K40**
Why matched
Hole range 105–130 mm covers your requirement 90–130 mm.
L3
- Hole range
- 90–130
- Pressure class
- 低风压 (Low pressure)
Why matched
Hole range 90–130 mm covers your requirement 90–130 mm.
76mm Drill Rods
- Rod spec
- Φ64×3000 mm or Φ76×3000 mm
Why matched
Matches the rig's official rod specification Φ64×3000 mm or Φ76×3000 mm.
System requirement: 14.5 bar / 11.3 m³/min · 90–130 mm
