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Diesel Screw Air Compressor

Diesel Screw Air Compressor Manufacturer & Supplier — Moderate Machine

Moderate Machine builds diesel screw air compressors for sites with no access to grid power — mining tunnels, water well and DTH drill rigs, oilfields, and remote construction projects. The range runs from the compact ZDCY-5/8 (185 CFM) up to the heavy-duty ZDCY-35/35, in single-stage and two-stage compression, powered by Cummins, Yuchai, Weichai, or Xichai diesel engines.

Choose stationary, two-wheel, four-wheel trailer, or crawler-mounted chassis to match your terrain and how often the unit needs to move.

Every machine is factory-tested for dust, water, and extreme temperature resistance before shipping, with OEM/ODM customization available for buyers in Southeast Asia, Africa, the Middle East, and Latin America.

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What Is a Diesel Screw Air Compressor?

A diesel screw air compressor is a self-contained compressed-air unit that uses a diesel engine — instead of an electric motor — to drive a pair of intermeshing helical rotors, which continuously trap and compress ambient air without the pulsation typical of piston machines.

Because it needs no external power source, it is the standard choice anywhere grid electricity is unavailable or unreliable: open-pit and underground mines, tunnel construction, DTH and water-well drilling, oil and gas fields, and disaster-relief operations.

Units are commonly rated by two numbers — free air delivery (CFM or m³/min) and working pressure (bar) — for example a "20/20" model delivers roughly 20 m³/min at 20 bar.

Depending on the pressure required, the screw airend runs single-stage compression for general pneumatic tool use, or two-stage compression for high-pressure mining and drilling applications where fuel efficiency at pressure matters most.

Advantages of Our Diesel Screw Air Compressor

High Compression Efficiency

The twin-rotor screw airend compresses air continuously rather than in pulses, so output pressure stays stable even under a fluctuating tool load. Our two-stage models — such as the ZDCY-31/25 and ZDCY-40/25 — use a second compression stage specifically to cut fuel consumption per m³ of air delivered compared with single-stage units at the same pressure.

185 Cfm Best Diesel Portable Rotary Screw Compressor best

Flexible Engine Sourcing

Mid-to-large models such as the ZDCY-20/20 series can be configured with Cummins, Weichai, Yuchai, or Xichai diesel engines, so buyers can standardize on the engine brand with the best parts and service network in their own country.

Portability Matched to the Jobsite

The same air capacity is available on four different chassis: stationary skid, two-wheel trailer, four-wheel trailer, or crawler undercarriage. Crews that relocate daily between drill points typically choose the two-wheel or crawler versions; fixed workshop or quarry installations run the stationary skid.

Lower Operating Cost per Hour

In regions where diesel is cheaper or more accessible than industrial electricity, running cost per m³ of compressed air is significantly lower than an electric-driven equivalent, especially for continuous multi-shift operation.

Built for Harsh Environments

Housings are sealed against dust and water ingress and rated for both high-heat and sub-zero starts, so the same base design can be shipped to a Gulf oilfield or a Central Asian winter site with only minor calibration changes.

One Compressor, Multiple Applications

A single unit can power pneumatic rock drills, jackhammers, sandblasting equipment, or pipeline pigging tools by simply changing the downstream tooling — no need to buy a separate compressor for each application.

Diesel Screw Air Compressor Specifications

Model	Engine Power (kW)	Air Capacity (m³/min)	Working Pressure (bar)	Weight (kg)	Dimensions (mm)
ZDCY-5/8	41	5	8	700	1600×1100×1600
ZDCY-6/8	58	6	8	1000	2540×1460×1548
ZDCY-8/8	59	8	8	1650	2441×1806×1900
ZDCY-10/10	88	10	10	1800	3084×1806×2059
ZDCY-12/10	88	12	10	1800	2441×1806×2059
ZDCY-15/15	148	15	15	2500	2900×1700×2430
ZDCY-18/17	162	18	17	3000	2900×1700×2430
ZDCY-18/18	191	18	18	3300	2900×1700×2430
ZDCY-20/20	228	20	20	3500	3100×1900×1950
ZDCY-29/23	258	29	23	3600	3100×1900×1950
ZDCY-31/25	309	31	25	4200	3500×2000×2150
ZDCY-35/35	412	35	35	5500	3800×2000×2300

Custom pressure, capacity, engine brand, and skid/trailer configuration available on request.

Types Of Diesel Screw Air Compressor

Stationary Type

Skid-mounted for fixed installations such as workshops, quarries, or permanent drilling pads where the unit stays in one place for extended runs.

Two-Wheel Trailer Type

Our most requested configuration for mining and construction crews; a road-towable two-wheel chassis lets one unit follow the crew from one drill point to the next within the same day.

Four-Wheel Trailer Type

Used on our larger, higher-pressure models (ZDCY-29/23 and above) where the added axle spreads the extra weight for safer highway towing over long distances between sites.

Crawler Type

Built to travel with the drill rig itself over rough, unpaved ground — quarries, hillside mining, and off-road drilling programs where wheeled trailers cannot follow. Frequently paired with our drill-rig-dedicated models such as the ZDCY-31/25.

Applications of Diesel Screw Air Compressor

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Construction Sites — Powers jackhammers, pneumatic drills, and compactors on sites with no grid connection yet installed.

Mining Operations — Supplies continuous compressed air to pneumatic rock drills and air hoists in dusty, remote underground and open-pit sites; our ZDCY-20/20 and KYLC-580/17 series are specifically built around mining duty cycles.

Drilling Rigs — Two-stage, high-pressure models such as the ZDCY-31/25 are engineered to feed DTH and water-well drill rigs that need sustained high-bar air rather than short bursts.

Oil & Gas Exploration — Provides breathing air, pneumatic tool power, and process-control air on offshore platforms and remote oilfields.

Emergency Rescue — Portable units power cutting and rescue tools after earthquakes, floods, or traffic accidents where power infrastructure is down.

Agriculture — Supports irrigation equipment, crop-spraying rigs, and other pneumatic farm machinery on land without electrical access.

Manufacturing — Drives pneumatic clamps and conveying systems in workshops located away from a stable grid supply.

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Why Choose Moderate Machine as Your Diesel Screw Air Compressor Supplier?

Full Capacity Range, One Supplier

From the 5/8 (185 CFM) entry model to the 40/25 large two-stage unit, buyers can size a whole fleet — small crew tools up to a full drill rig — from one factory instead of mixing brands.

OEM/ODM Customization

Our engineering team adjusts pressure, capacity, engine brand, chassis type, cooling package, and nameplate/logo branding to match a buyer's target market and climate.

Competitive, Factory-Direct Pricing

As the manufacturer, we quote factory-direct, removing the trading-company markup common with resold industrial equipment.

Export Experience Across ~50 Countries

Our export team has shipped diesel screw air compressors and related mining/drilling equipment to roughly 50 countries across Latin America, Africa, the Middle East, Central Asia, and Southeast Asia, and can advise on the engine brand, spare-parts strategy, and documentation that work best for a given destination.

Installation Training & After-Sales Support

Every order includes operation training and one year of warranty backed by remote technical support, so crews in areas with limited local service capacity are not left without help.

How We Manufacture Our Diesel Screw Air Compressors

Component Sourcing — Screw airends, diesel engines (Cummins/Yuchai/Weichai/Xichai), and control components are sourced and quality-checked before assembly begins

Airend & Engine Coupling — The screw airend is precisely aligned and coupled to the chosen diesel engine on the base frame.

Piping, Cooling & Electrical Assembly — Air piping, the oil-air separator system, radiator/cooling package, and control wiring are installed and pressure-checked.

Chassis & Enclosure Fitting — The assembled power unit is mounted onto the stationary skid, two-wheel, four-wheel, or crawler chassis, and the dust/waterproof housing is fitted.

Running-In & Performance Test — Each unit undergoes a running-in cycle followed by air capacity, working pressure, noise, and leak testing against factory specification.

Customization, Painting & Packing — Buyer-specified paint color, nameplate, and logo are applied, then the unit is packed for FCL/LCL sea, air, or rail shipment out of Ningbo or Shanghai port.

How to Order a Custom Diesel Screw Air Compressor

Tell us your requirement — target air capacity, working pressure, preferred engine brand, chassis type, and destination country/climate.
Get a model recommendation — our engineers match you to a standard model or scope an OEM/ODM configuration.
Confirm terms & deposit — 30% down payment before production begins.

Production (about 20–30 days) — with factory test photos/videos shared before shipment.
Balance payment & shipping — 70% balance before shipping; we arrange sea, air, or rail freight.
Installation, training & after-sales — remote or on-request installation guidance, operator training, and one-year warranty support.

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Customer Case — Diesel Screw Air Compressor in the Field

Brazil — 185 CFM Diesel Screw Air Compressor for Rock Drill Support

A Brazilian mining customer needed one air compressor capable of feeding two to three YT27 pneumatic rock drills at once, across both humid coastal sites and higher-altitude Andean terrain. Heat and humidity made cooling and corrosion resistance a priority, and the customer needed the unit to be easy to relocate as the drilling face moved.

Moderate Machine supplied a 185 CFM diesel screw air compressor with an adjusted cooling-fan speed and enlarged radiator surface for the hot, humid coastal environment, added an oil-water separator ahead of the drills to keep the air supply dry, and built a "one-to-three" quick-connect air distributor with matching hose lengths so a single compressor could serve multiple drills from one point.

Results: the unit reliably powers two YT27 rock drills simultaneously while holding line pressure at 0.5–0.6 MPa, has run 500 hours continuously without a heat-related shutdown, and delivers roughly 12% better fuel economy than the customer's previous compressor brand.

Learn more about Moderate Customer Cases >>

ZD-5/8 185CFM Small Portable Diesel Screw Air Compressor On Wheels

Certifications & Quality Control

Moderate Machine's production is certified to ISO 9001 quality management standards (Certificate No. 37124Q0097R0S, issued by Sipin Certification Service (Shanghai) Co., Ltd., valid through May 23, 2027). Beyond the certificate, every diesel screw air compressor is factory-tested for air capacity, working pressure, noise level, and leak-tightness, and is built with dust- and water-resistant housing rated for high- and low-temperature jobsite conditions before it leaves the factory.

Our Factory & Manufacturing Strength

Quzhou Zhongdu Machinery Technology Co., Ltd. (Moderate Machine) was founded in 2017 and operates from a 1,000 m² facility located inside the Zhejiang Air Power Machinery Industry Demonstration Base — a regional cluster for pneumatic and air-power equipment manufacturing.

The company runs a team of 15+ staff, including a dedicated 2-person R&D group and a 13-person export/sales team handling international buyer communication directly. Annual export value currently exceeds US$3 million, with equipment shipped to roughly 50 countries across Latin America, Africa, the Middle East, Central Asia, and Southeast Asia.

The company is led by founder and general manager Wu Jun, who brings about 10 years of experience in the mining and industrial machinery industry, alongside technical director Dong Zhuowen.

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Frequently Asked Questions About Diesel Screw Air Compressors

1. What does the screw element do inside a diesel screw air compressor?

The screw element (also called the airend) is the core working part of the machine — two intermeshing rotors trap air and progressively reduce its volume as it moves along the rotor length, producing a continuous, pulsation-free flow of compressed air.

2. How does a diesel-powered air compressor differ from an electric one?

A diesel screw air compressor uses a diesel engine, rather than an electric motor, to turn the screw airend. This removes the need for a grid connection, making it the practical choice for mining, drilling, and construction sites where power is unavailable.

3. What's the difference between single-stage and two-stage models?

Single-stage units compress air to the target pressure in one pass and suit general pneumatic tool use. Two-stage models (such as our ZDCY-31/25 and ZDCY-40/25) compress air in two steps, which reduces fuel consumption per m³ of air at higher pressures — the format most drilling rigs and mining operations prefer above roughly 20 bar.

4. Which diesel engine brands are available?

Depending on the model, we offer Cummins, Weichai, Yuchai, or Xichai engines, so buyers can align with the engine brand that has the strongest local parts and service network in their country.

5. Which chassis type should I choose — stationary, wheeled, or crawler?

Stationary skids suit fixed installations; two-wheel trailers suit crews that relocate daily on paved or graded roads; four-wheel trailers suit our larger, heavier models over longer tow distances; crawler chassis suit rough, unpaved ground where the compressor needs to move with the drill rig itself.

6. What air capacity and pressure do I need for my rock drills?

This depends on the number and type of drills running simultaneously. Tell us your drill model and how many units need to run at once, and our engineers will recommend the matching CFM/m³ and bar rating — as with the 185 CFM unit supplied for our Brazil case above, sized to run two to three YT27 drills together.

7. Can the compressor be customized (OEM/ODM)?

Yes. We customize pressure, capacity, engine brand, cooling package, chassis type, paint color, and nameplate/logo branding for OEM and ODM buyers.

8. What is your standard delivery time?

Standard delivery is about 20–30 days after order confirmation, depending on model and customization scope.

9. Is there a minimum order quantity (MOQ)?

If the model is in stock, there is no MOQ. For made-to-order or customized units, MOQ is discussed based on your specific requirement.

10. What is your payment term?

30% deposit before production begins, with the 70% balance due before shipment.

11. How is the equipment shipped?

We ship by sea (FCL/LCL), air, or rail, in carton or wooden-crate packaging, out of Ningbo or Shanghai port.

12. What warranty and after-sales support do you provide?

Every diesel screw air compressor carries a one-year warranty on the machine, plus installation/operation training and ongoing remote technical support.

13. Can you print our company logo on the machine and packaging?

Yes, logo printing on the nameplate and export packaging is available for OEM/ODM orders.

14. Do you provide test reports or factory audit support?

Yes, we can assist with designated third-party product test reports and factory audit reports on request.

15. How do you adapt units for hot, humid, or high-altitude climates?

As shown in our Brazil case, we adjust cooling-fan speed, radiator size, and add moisture-separation equipment to suit humid coastal or high-altitude operating conditions on request.

Learn More About Diesel Screw Air Compressors →

Single-Stage vs Two-Stage Compression: What's the Difference?

How two-stage compression works and where it improves fuel efficiency at higher working pressures.

Choosing the Right Oil for Your Screw Air Compressor.

A maintenance guide to oil selection and change intervals for longer service life in the field.

Why Is My Screw Air Compressor Running Hot? Causes & Fixes

Common causes of overheating — clogged radiators, fan issues, cooling problems — and how to resolve them on-site.

Get a Free Quote for Diesel Screw Air Compressor

Tell us your required air capacity, working pressure, and jobsite — no minimum order quantity on in-stock models, and full OEM/ODM customization available.

Quzhou Zhongdu Machinery Technology Co., Ltd. is one of the most professional diesel screw air compressor manufacturers and suppliers in China. We warmly welcome you to wholesale customized diesel screw air compressor made in China here from our factory.

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Diesel Screw Air Compressor