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GAS Series Fixed Speed Screw Air Compressor (7.5-185 kW)

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OFW Series Water-Lubricated Oil-Free Compressor (7.5-250 kW)

OFD Series Dry Oil-Free Screw Air Compressor (45-355 kW)

GMD Series Portable Diesel Screw Air Compressor (35-522 kW)

GMD Series Portable Diesel Screw Air Compressor (35-522 kW) manufacturer

GMD Series Portable Diesel Screw Air Compressor (35-522 kW) factory

GMD Series Portable Diesel Screw Air Compressor (35-522 kW)

The ZIQI GMD Series is a heavy-duty portable diesel screw air compressor engineered for extreme outdoor environments. Powered by world-class Cummins and Yuchai engines with a 1:1 direct-drive transmission, it eliminates gear wear and maximizes fuel efficiency. Featuring an oversized cooling system rated for 50°C continuous operation, it provides reliable pneumatic power for mining, DTH water well drilling, and major infrastructure projects.

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Working Power	32 - 400 kW
Free Air Delivery	3.2 - 33 m³/min
Working Pressure	0.7 - 2.5 MPa (7 - 25 bar)
Transmission	Flexible Direct Drive
Cooling Method	Air-Cooling

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Product Details
Product Applications

★ Heavy Duty · Diesel Powered · Direct Drive

ZIQI GMD Series Portable Diesel Air Compressor

Cummins / Yuchai Engine · Direct Drive · 50°C Tropical Rated · 23 Models from 35 to 522 kW

Models Available

35 – 522 kW

m³/min Max Flow

2,472 CFM

50°C

Continuous Operation

Tropical Rated

Power Loss

Direct Drive

Why ZIQI Diesel Portables Lead the Field

For open-pit mining and infrastructure projects, fuel economy and mechanical reliability are paramount. The ZIQI GMD Series achieves this by integrating world-class diesel engines (Cummins / Yuchai / Yanmar) with our proprietary large-diameter air ends — the same compression technology platform used in our stationary two-stage compressors.

Our Direct Drive system ensures 100% transmission efficiency, eliminating gear wear entirely. Compared to standard portable units, ZIQI delivers higher air volume per liter of fuel and guarantees stable operation in extreme conditions — from -10°C cold starts to +50°C tropical heat. The oversized independent cooling system with 30% extra surface area makes the GMD the preferred choice for contractors globally.

Core Hardware — Built for the Harshest Sites

Tier-1 global components only. No compromises on the engine or air end.

Powerful Heart

Cummins / Yuchai Engine

Powered by world-renowned heavy-duty diesel engines. Chosen for massive torque reserve, exceptional fuel economy, and ease of global maintenance with parts available in 180+ countries.

Service: Global warranty — parts in 180+ countries
Climate: Cold start at -10°C, continuous at +50°C
Tech: Advanced turbocharging for stable high-torque output
Brands: Cummins / Yuchai / Yanmar / Xichai options

German Tech

German-Tech Air End + Direct Drive

Large-diameter rotor design with proprietary profile. Direct coupling completely eliminates gears, friction losses, and expensive gearbox maintenance over the machine's lifetime.

Drive: High-elastic direct coupling — 0% power loss
Durability: Designed for 24/7 continuous heavy load
Efficiency: Constant, stable discharge pressure
Savings: $0 gear maintenance over entire machine life

🌪️

Multi-Level Filtration

Heavy-duty multi-stage air filtration blocks 99.9% of dust and impurities, protecting engine and air end in harsh mining and sandblasting environments.

❄️

Oversized Cooling System

Independent modular cooler with 30% larger surface area. Guarantees stable and continuous operation even in 50°C tropical heat.

🖥️

Intelligent Control

Micro-computer logic system auto-adjusts engine speed to real-time air demand, drastically saving fuel and reducing operational noise.

🔊

Low Noise Canopy

Sound-attenuated steel canopy with thick acoustic insulation. Noise level ≤ 75 dB(A) at 7m — suitable for urban construction zones.

Built for These Applications

From quarries to pipelines — wherever diesel portable air power is needed.

⛏️

Mining & Quarrying

7 – 25 bar

DTH drilling, ore extraction, open-pit operations

🔩

Water Well Drilling

15 – 25 bar

High-pressure DTH for deep boreholes

🏗️

Construction & Infrastructure

7 – 10 bar

Jackhammers, breakers, concrete spraying

🛢️

Oil & Gas / Pipeline

10 – 20 bar

Pipeline purging, sandblasting, pressure testing

GMD Application Engineering Guides

Deep-dive technical sizing protocols for specialized portable diesel applications.

Tell us your CFM, pressure, and jobsite conditions — we'll recommend the exact GMD model.

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Standard Portable vs ZIQI GMD

See the measurable difference in mechanical build, efficiency, and long-term cost.

Feature	Standard Portable Compressor	ZIQI GMD Series
Diesel Engine	Unbranded / Tier-3 Chinese engines	Cummins / Yuchai / Yanmar (global warranty)
Transmission	Gear drive — 2-3% power loss, gear replacement every 8,000 hrs	Direct drive — 0% power loss, zero gear maintenance
Cooling System	Standard size — rated max 40°C ambient	Oversized +30% surface area — rated 50°C continuous
Fuel Consumption (75 kW @ 8 bar)	~22 L/h typical	~18 L/h — 18% fuel saving
Chassis & Frame	Standard sheet metal	High-strength towing traction bar, heavy-duty axle
Air Filtration	Single-stage paper filter	Multi-stage heavy-duty — 99.9% dust removal
Control System	Basic analog gauges	Micro-computer PLC — auto speed adjust, fault diagnosis
Two-Stage Option	Not available on most brands	GMD-T series — 15-20% better fuel efficiency at 12+ bar
5-Year Gear Maintenance	$4,000 – $8,000 (gear sets + labor)	$0 — no gears to replace

How to Size a Portable Compressor

Three steps to the right model for your jobsite.

Calculate Tool Consumption (CFM / m³/min)

Identify the total air consumption of your pneumatic tools (jackhammers, drill rigs, sandblasters). Always add a 25% safety margin for pressure drops in long hoses.

Determine Operating Pressure (Bar)

Standard construction tools require 7-8 bar. DTH water well drilling typically requires 15-25 bar. Sandblasting needs 10-13 bar.

Account for Altitude and Temperature

Diesel power drops ~3% per 300m altitude. In extreme heat, cooling capacity is critical. Not sure which model fits? Contact our engineers for a free sizing calculation.

Full Technical Specifications

Single-Stage (GMD Standard) and Two-Stage (GMD-T High Efficiency) models.

Series	Power (kW)	Power (HP)	Pressure (bar)	Air Delivery (m³/min)	Air Delivery (CFM)	Engine	Weight (kg)
GMD-35	34.6	47	7	5.0	176	Yanmar	1060
GMD-41	41	55	7 / 8 / 10	3.6 – 5.2	127 – 183	Xichai	1060
GMD-55	55	74	7 / 8 / 10 / 12	4.5 – 7.0	158 – 247	Xichai	1400
GMD-58	60	81	7 / 8 / 10 / 13	4.5 – 5.9	158 – 208	Cummins	1550
GMD-74	74	100	10 / 20	5.7 – 7.3	201 – 257	Cummins / Xichai	1550 – 1750
GMD-93	93 – 97	126 – 131	7 / 8 / 10	9.0 – 11.0	317 – 388	Cummins	2100
GMD-96	96	129	7 / 8 / 10 / 13 / 15	8.1 – 11.5	286 – 406	Xichai	2100
GMD-97	97	130	5 / 7.6 / 8 / 9.8 / 11.5	8.0 – 17.0	282 – 600	Cummins	2050
GMD-110	110	149	10 / 11.3	8.0 – 10.8	282 – 381	Cummins	2200
GMD-118	118	158	7 / 8 / 10 / 12 / 13	11.0 – 15.5	388 – 547	Yuchai	3050
GMD-132	132	177	8 / 10	14.0 – 16.0	494 – 565	Cummins	3100 – 3200

* GMD Standard Series — Single Stage Compression. Air delivery varies based on selected pressure configuration.

Series	Power (kW)	Power (HP)	Pressure (bar)	Air Delivery (m³/min)	Air Delivery (CFM)	Engine	Weight (kg)
GMD-93T	93	126	7 / 8 / 20	7.2 – 11.5	254 – 406	Cummins	2000 – 2350
GMD-96T	96	129	10 / 12	10.2 – 11.5	360 – 406	Xichai	2350
GMD-110T	110	149	10	11.5	406	Cummins	2350
GMD-118T	118	158	8 / 10 / 12 / 15	10.5 – 16.2	370 – 572	Yuchai	3350
GMD-132T	132	177	8 / 10 / 13 / 20	10.0 – 18.0	353 – 635	Cummins	3200 – 4000
GMD-148T	148	198	7 / 8 / 10 / 13	15.4 – 19.2	543 – 678	Xichai	4000 – 4300
GMD-154T	154	207	14	14.3	505	Cummins	4300
GMD-162T	162	217	7 / 8 / 10 / 13	16.0 – 23.2	565 – 819	Xichai	4350
GMD-194T	194	263	10 / 13 / 15	19.0 – 23.1	670 – 815	Cummins	4600
GMD-239T	239	325	10	26.5	935	Cummins	5800
GMD-257T	257	345	8 / 12	28.5 – 33.5	1006 – 1183	Xichai	5700 – 5800
GMD-522T	522	709	8	70.0	2472	Cummins	9500

* GMD-T High Efficiency Series — Two Stage Compression. "T" series delivers 15-20% better fuel efficiency at 12+ bar. All power values verified against master spec sheet. Contact our engineers for exact configuration and pricing.

Ready to Deploy? Get Your GMD Quote in 24 Hours

Tell us your air demand (CFM or m³/min), operating pressure (bar), and jobsite conditions. We'll recommend the exact model and deliver a quote within one business day.

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Frequently Asked Questions

What engines are used in ZIQI portable compressors?

The ZIQI GMD series uses engines from Cummins, Yuchai, Yanmar, and Xichai. These are chosen for high torque output, exceptional fuel efficiency, and comprehensive global service networks with parts available in 180+ countries.

Can this compressor work in high temperatures or tropical climates?

Yes. The GMD features an oversized independent modular cooling system with 30% more surface area than standard designs. It ensures stable continuous operation at up to 50°C ambient — tested and deployed across the Middle East, Africa, and Southeast Asia.

Why use Direct Drive instead of Gear Drive for portable compressors?

Gear drive systems lose 2-3% of engine power through gear friction and require gear set replacement every 8,000 hours ($2,000-$4,000 per replacement). Our high-elastic direct drive coupling transmits 100% of engine power with zero gear wear — saving $4,000-$8,000 in maintenance costs over 5 years.

What is the difference between the GMD Standard and GMD-T Series?

The GMD Standard uses single-stage compression — simpler and cost-effective for general construction. The GMD-T uses two-stage compression with intercooling, delivering 15-20% more air per liter of fuel. Choose GMD-T for high-pressure demands (12+ bar) like deep DTH drilling.

How many CFM do I need for a DTH drilling rig?

It depends on hole diameter and hammer size. A typical 3-inch DTH hammer needs about 250 CFM at 17 bar. A 4-inch hammer needs 350+ CFM at 20 bar. A 6-inch hammer can require 600+ CFM at 25 bar. Always add a 25% safety margin for hose pressure drops. For the complete sizing methodology with bailing velocity and hydrostatic head calculations, see our DTH water well compressor sizing guide. For DTH drilling, consider our GMD-T two-stage models.

What is the fuel consumption of a 185 CFM diesel portable compressor?

A typical 185 CFM (approximately 5 m³/min) diesel portable compressor consumes between 18-25 liters per hour at full load. ZIQI GMD models with direct drive typically consume around 18 L/h — approximately 18% less than gear-driven competitors — because zero power is lost through gear friction.

Can a diesel portable compressor work at high altitude?

Yes, but naturally aspirated diesel engines lose approximately 3% power per 300 meters of altitude gain. At 3,000m, expect 10-12% less output. Solutions: choose a turbocharged engine (all ZIQI GMD models are turbocharged), or select one model size larger to compensate. For the full ISO 3046-1 derating physics and field-proven selection tables, see our high-altitude mining compressor guide. Our engineers can calculate the exact derating for your altitude and recommend the optimal model.

What is the difference between single-stage and two-stage portable compressors?

Single-stage compresses air in one step — simpler, lighter, and more affordable. Two-stage compresses twice with intercooling between stages, producing cooler, drier air with 15-20% better fuel efficiency, especially at higher pressures (12+ bar). If your application needs high pressure (DTH drilling, sandblasting at 13+ bar), two-stage is the more cost-effective choice over the machine's lifetime.

* All power values verified against master spec sheet. Air delivery varies by pressure configuration. Specifications subject to change. Contact ZIQI for exact configuration and pricing.

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GMD Standard Series

Single Stage Compression

Series	Power Class		Pressure Options (bar)	Air Delivery Range		Engine Brand	Weight (kg)
Series	kW	HP	Pressure Options (bar)	m³/min	cfm	Engine Brand	Weight (kg)
GMD-35	34.6	47	7	5.0	176	Yanmar	1060
GMD-41	41	55	7 / 8 / 10	3.6 - 5.2	127 - 183	Xichai	1060
GMD-55	55	74	7 / 8 / 10 / 12	4.5 - 7.0	158 - 247	Xichai	1400
GMD-58	60	81	7 / 8 / 10 / 13	4.5 - 5.9	158 - 208	Cummins	1550
GMD-74	74	100	10 / 20	5.7 - 7.3	201 - 257	Cummins / Xichai	1550 - 1750
GMD-93	93 - 97	126 - 131	7 / 8 / 10	9.0 - 11.0	317 - 388	Cummins	2100
GMD-96	110	149	7 / 8 / 10 / 13 / 15	8.1 - 11.5	286 - 406	Xichai	2100
GMD-97	110	149	5 / 7.6 / 8 / 9.8 / 11.5	8.0 - 17.0	282 - 600	Cummins	2050
GMD-110	110	149	10 / 11.3	8.0 - 10.8	282 - 381	Cummins	2200
GMD-118	132	179	7 / 8 / 10 / 12 / 13	11.0 - 15.5	388 - 547	Yuchai	3050
GMD-132	140	190	8 / 10	14.0 - 16.0	494 - 565	Cummins	3100 - 3200

GMD-T High Efficiency Series

Two Stage Compression

Series	Power Class		Pressure Options (bar)	Air Delivery Range		Engine Brand	Weight (kg)
Series	kW	HP	Pressure Options (bar)	m³/min	cfm	Engine Brand	Weight (kg)
GMD-93T	93	126	7 / 8 / 20	7.2 - 11.5	254 - 406	Cummins	2000 - 2350
GMD-96T	110	149	10 / 12	10.2 - 11.5	360 - 406	Xichai	2350
GMD-110T	110	149	10	11.5	406	Cummins	2350
GMD-118T	132	179	8 / 10 / 12 / 15	10.5 - 16.2	370 - 572	Yuchai	3350
GMD-132T	140 - 194	190 - 263	8 / 10 / 13 / 20	10.0 - 18.0	353 - 635	Cummins	3200 - 4000
GMD-148T	154	209	7 / 8 / 10 / 13	15.4 - 19.2	543 - 678	Xichai	4000 - 4300
GMD-154T	162	220	14	14.3	505	Cummins	4300
GMD-162T	191	259	7 / 8 / 10 / 13	16.0 - 23.2	565 - 819	Xichai	4350
GMD-194T	194	263	10 / 13 / 15	19.0 - 23.1	670 - 815	Cummins	4600
GMD-239T	239	325	10	26.5	935	Cummins	5800
GMD-257T	264	359	8 / 12	28.5 - 33.5	1006 - 1183	Xichai	5700 - 5800
GMD-522T	522	709	8	70.0	2472	Cummins	9500

GAS Series Fixed Speed Screw Air Compressor (7.5-185 kW)

The ZIQI GAS Series represents the pinnacle of industrial fixed speed rotary screw air compressors. Featuring original German GHH-RAND airends (100,000-hour design life) and WEG IE4 Super Premium Efficiency motors, these units deliver 100% continuous baseload air. Available in belt-driven (7.5-45 kW) and direct-driven (55-185 kW) configurations for heavy-duty 24/7 manufacturing.
GAT Series Two-Stage Rotary Screw Air Compressor (22-355 kW)

The ZIQI GAT Series is an industrial two-stage rotary screw air compressor engineered for high-demand facilities. By utilizing dual-stage compression with interstage cooling, it approaches near-isothermal efficiency—delivering up to 15% energy savings compared to single-stage models. Featuring 17 models from 22 kW to 355 kW, direct 1:1 drive, and WEG IE4 Super Premium Efficiency motors.
OFW Series Water-Lubricated Oil-Free Compressor (7.5-250 kW)

The ZIQI OFW Series represents the ultimate evolution in 100% oil-free compression. By utilizing purified water to seal, cool, and lubricate the stainless steel compression chamber, it achieves near-isothermal efficiency while guaranteeing ISO 8573-1 Class 0 air purity. Eliminating the extreme heat and fragile Teflon coatings of traditional dry screw compressors, the OFW series delivers significantly lower maintenance costs and superior energy savings for the pharmaceutical, food, and electronics industries.
OFD Series Dry Oil-Free Screw Air Compressor (45-355 kW)

The ZIQI OFD Series is an industrial dry oil-free rotary screw air compressor engineered for applications demanding absolute air purity. Certified to ISO 8573-1 Class 0, it guarantees zero oil contamination. Unlike standard dry compressors that suffer from rapid coating degradation, the OFD utilizes a revolutionary Ultracoat (Teflon + MoS₂) treatment and a stainless steel 2nd-stage rotor to resist high temperatures and humidity, ensuring pharmaceutical and food-grade safety over a 10-year lifespan.

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GMD Series Portable Diesel Screw Air Compressor (35-522 kW)

ZIQI GMD Series Portable Diesel Air Compressor

Why ZIQI Diesel Portables Lead the Field

Cummins / Yuchai Engine

German-Tech Air End + Direct Drive

Multi-Level Filtration

Oversized Cooling System

Intelligent Control

Low Noise Canopy

Mining & Quarrying

Water Well Drilling

Construction & Infrastructure

Oil & Gas / Pipeline

Calculate Tool Consumption (CFM / m³/min)

Determine Operating Pressure (Bar)

Account for Altitude and Temperature

Ready to Deploy? Get Your GMD Quote in 24 Hours

GMD Series Diesel Portable Compressor — Specifications

GMD Standard Series

GMD-T High Efficiency Series

Recommended

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