Towable Diesel Air Compressors

Application：

KOTECH-KDP Air Compressor is ideal for a variety of industrial and commercial uses, including mining, ship repair, hydropower, oil and gas exploitation, borehole, construction, general construction, public construction, chemical industry, quarry, sandblasting, pipeline pressure test, public works, drilling, water well drilling, rock drill rod, jack hammer, subsurface drilling, fire breathing, digging, and pipeline grooming. Featuring high capacity and reliable performance, this durable compressor with wheels ensures long-lasting use.

Maximum versatility：

KOTECH-KDP is ideal choice for powering equipment such as construction machinery. Meticulous construction and premium quality components ensure trouble-free operation in ambient temperatures ranging from -20℃ to +50℃. Versatility is further enhanced by the chassis, which can be equipped with a fixed or height adjustable tow bar and with or without an overrun brake. Stationary versions can be installed either on skids or machine mounts.

Lightweight：

Powerful doesn’t necessarily mean heavy: the KOTECH-KDP is exceptionally easy to manoeuvre and transport. Moreover, its larger diesel fuel capacity ensures that the compressor has more than enough power available to last an entire work shift.

Separate air filters for engine and portable air compressor：

The air filters are specifically tallored to sult required air demand and therefore ensure dependable system operation. A further important design detail is the electric fuel pump, which enables quick and simple deaeration of the diesel lines, thereby eliminating the need for labour-intensive manual pumping.

Optional diesel engine：

Kubota/Yanmar/Perkins/Volvo/Cummins, etc. Flexible diesel engine to meet the different operating environment and conditions of operation, general maintenance, regardless of the location of the compressor, customers can find a suitable supplier of parts.

Expansion Tank：

The exclusively designed expansion tank with refrigerating liquid.

Simple to operate：

Operation is made simple via user-friendly icons and a single start switch with pre-heat function. The unit also features fully automatic monitoring and shutdown in case of malfuncion, whilst a pressure gauge and airend temperature display enable all information to be viewed at a glance.

Product Showcase:

Engine

The original imported Japanese -YANMAR engines are more suitable for the Kotech smaller portable air compressors, resulting in better fuel economy and lower noise.

Diesel Engine

Cummins diesel engines are used in Kotech medium to large mobile air compressors, stronger power and more convenient maintenance, which makes it more convenient to use.

The rotor

By optimizing the host structure, the new type can achieve improved efficiency up to 12% and minimize the operation costs.

Silent Environment

Quiet housing design, even in the noisy city it can maintain low noise level, avoiding noise pollution to environment.

Technical Parameters：

Model		KDP-1/7	KDP-2/7	KDP-3.5/7	KDP-4.5/7	KDP-5/7		KDP-6/7	KDP-6/10	KDP-10/7
Air Delivery	(m3/min)	1	2	3.5	4.5	5.2	3.7 – 5.2	6	6	10
	cfm	35	70	123	147	185	130 – 185	214	214	353
Working Pressure	bar	7	7	7	7	7	13 – 7	7	10	7
	psi	100	100	100	100	100	188 – 100	100	145	100
Fuel oil tank capacity	L	20	20	45	70	70	70	100	120	140
Diesel Engine	brand	Changchai	Changchai	Yanmar	Yanmar	Weichai	Yanmar	Cummins	Cummins	Cummins
Rated Power	kw	8.2	11	26.8	32.2	36.8	32.3	60	60	93
Noise	dB(A)	70±3	70±3	75±3	75±3	75±3	75±3	75±3	75±3	80±3
Max. ambient temperature	℃	50	50	50	50	50	50	50	50	50
Max. rotation speed	rpm	2500	2500	2650	2500	2500	2500	2500	2500	2000
Min. rotation speed	rpm	1800	1800	1800	1750	1750	1750	1750	1750	1500
Outlet Connection		1*G3/4	1*G3/4	2*G3/4	G1, G3/4	G1, G3/4	G1, G3/4	G1-1/4, G1	G1-1/4, G1	G1-1/2, 2*G1-1/4
Dimension(mm)	L	ODM	ODM	2853	3230	3230	3230	3300	3300	3800
	W			1272	1440	1440	1440	1570	1570	1900
	H			1092	1425	1425	1425	1560	1560	1900
Weight	Kg			880	1200	1200	1200	1550	1550	1820

Model		KDP-10/10	KDP-12/7	KDP-10/12	KDP-12/8	KDP-13/13	KDP-15/13	KDP-12/14	KDP-14/14	KDP-10/20
Air Delivery	(m3/min)	10	12	10	12	13	15	12.5	14	10
	cfm	353	424	353	423	460	530	441	494	353
Working Pressure	bar	10	7	12	8	13	13	14	14	20
	psi	145	100	174	116	188	188	203	203	290
Fuel oil tank capacity	L	160	160	160	188	188	160	160	160	160
Diesel Engine	brand	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins
Rated Power	kw	97	97	97	110	110	132	132	154	158
Noise	dB(A)	80±3	80±3	80±3	80±3	80±3	85±3	85±3	85±3	85±3
Max. ambient temperature	℃	50	50	50	50	50	50	50	50	50
Max. rotation speed	rpm	2500	2300	2500	2500	2500	2000	2000	2200	2000
Min. rotation speed	rpm	1500	1500	1500	1500	1500	1500	1500	1500	1500
Outlet Connection		G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 2*G1-1/4	G1-1/2, 3*G1-1/4	G1-1/2, 3*G1-1/4
Dimension(mm)	L	3800	3800	3800	4000	4000	4350	4350	4350	4350
	W	1900	1900	1900	1900	1900	1960	1960	1960	1960
	H	1900	1900	1900	1900	1900	1950	1950	1950	1950
Weight	Kg	1840	1860	1840	1840	1840	2020	2020	2220	2220

Model		KDP-13/20	KDP-15/15	KDP-21/10	KDP-16/17	KDP-18/17	KDP-23/14	KDP-24/13	KDP-27/12	KDP-30/10
Air Delivery	(m3/min)	13	15	21	16	18	23	24	27	30
	cfm	459	530	742	565	636	812	847	953	1060
Working Pressure	bar	20	15	10	17	17	14	13	12	10
	psi	290	217	145	246	246	174	174	174	145
Fuel oil tank capacity	L	160	280	360	280	600	680	680	680	680
Diesel Engine	brand	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins
Rated Power	kw	163	178	194	194	194	242	242	242	242
Noise	dB(A)	85±3	85±3	88±3	85±3	88±3	88±3	88±3	88±3	88±3
Max. ambient temperature	℃	50	50	50	50	50	50	50	50	50
Max. rotation speed	rpm	2200	2200	2000	2200	2400	2100	2100	2100	2100
Min. rotation speed	rpm	1500	1500	1500	1500	1500	1500	1500	1500	1500
Outlet Connection		2*G1-1/2″, 1*G1″	G1-1/2, 3*G1-1/4	G1-1/2, 3*G1-1/4	G1-1/2, 3*G1-1/4	G1-1/2, 3*G1-1/4	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1
Dimension(mm)	L	4350	3980	4580	3980	3980	5400	5400	5400	5400
	W	1960	1860	1950	1860	1860	2100	2100	2100	2100
	H	1950	2450	2500	2450	2450	2550	2550	2550	2550
Weight	Kg	2520	2750	2840	2780	2910	4800	4800	4800	4800

Model		KDP-18/25	KDP-20/20	KDP-25/18	KDP-25/20	KDP-30/12	KDP-34/9	KDP-21/24	KDP-45/10	KDP-31.5/21
Air Delivery	(m3/min)	18	20	25	25	30	34	21	45	31.5
	cfm	635	706	882	882	1060	1200	742	1589	742
Working Pressure	bar	25	20	18	20	12	9	24	10	21
	psi	362	290	261	290	174	130	348	145	508
Fuel oil tank capacity	L	680	680	760	760	800	800	800	840	840
Diesel Engine	brand	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins
Rated Power	kw	242	242	264	264	298	298	298	372	372
Noise	dB(A)	88±3	88±3	88±3	88±3	88±3	88±3	88±3	88±3	88±3
Max. ambient temperature	℃	50	50	50	50	50	50	50	50	50
Max. rotation speed	rpm	2100	2100	2100	2100	2100	1900	1900	1900	1900
Min. rotation speed	rpm	1500	1500	1500	1500	1500	1500	1500	1500	1500
Outlet Connection		2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1
Dimension(mm)	L	5400	5400	5400	5400	5400	5400	5400	5400	5400
	W	2100	2100	2100	2100	2100	2100	2100	2100	2100
	H	2550	2550	2550	2550	2550	2550	2550	2550	2550
Weight	Kg	4800	4800	4800	4800	4800	4800	4800	4800	4800

Model		KDP-26/30	KDP-21/35	KDP-29/25	KDP-33/25	KDP-35/25	KDP-45/13	KDP-35/30	KDP-28/35	KDP-35/17	KDP-35/34
Air Delivery	(m3/min)	26	21	29	33	35	45	35	28	35	35
	cfm	918	742	1024	1165	1236	1588	1236	989		1236
Working Pressure	bar	30	35	25	25	25	13	25	35	17	34
	psi	435	508	363	363	363	189	363	508		493
Fuel oil tank capacity	L	840	840	840	840	840	840	900	900	840	900
Diesel Engine	brand	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins	Cummins
Rated Power	kw	372	410	410	410	429	429	515	522	372	602
Noise	dB(A)	88±3	88±3	88±3	88±3	88±3	88±3	88±3	88±3	88±3	88±3
Max. ambient temperature	℃	50	50	50	50	50	50	50	50	50	50
Max. rotation speed	rpm	1900	1900	1900	1900	1900	1900	1900	1900	1900	1900
Min. rotation speed	rpm	1500	1500	1500	1500	1500	1500	1500	1500	1500	1500
Outlet Connection		2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1	2*G1-1/2, 2*G1-1/4, 1-G1
Dimension(mm)	L	5400	5400	5400	5400	5400	5400	5600	5600	5400	5600
	W	2100	2100	2100	2100	2100	2100	2100	2100	2100	2100
	H	2550	2550	2550	2550	2550	2550	2550	2550	2550	2550
Weight	Kg	4800	4800	4800	4800	4800	4800	4800	4800	4800	4800

FAQ：

1) What is an air compressor diesel model, and when should I choose it?

An air compressor diesel unit is a portable compressor powered by a diesel engine, built for job sites where stable electricity isn’t available. Kotech KDP Series is designed for outdoor, continuous-duty work such as construction, mining support, road projects, and general pneumatic tools. If you need mobility, independence from the grid, and reliable output in harsh environments, diesel is usually the best choice.

2) What applications are best for air compressors diesel units?

Air compressors diesel units are commonly used for jackhammers, pneumatic breakers, sandblasting, pipeline work, shotcrete support, and general construction air demand. They’re also popular for rental fleets because they can be moved quickly between sites. If your usage is high-duty and outdoor, diesel portable compressors are usually more practical than fixed electric systems.

3) How do I size a diesel air compressor for my tools?

To size a diesel air compressor, you mainly need two numbers: working pressure (bar/psi) and airflow (CFM / m³/min) required by your tools. Add a safety margin (often 10–20%) to avoid pressure drops when multiple tools run at once. If you tell us your tools, quantities, and operating pressure, we can recommend the right KDP model.

4) What engine brands are used in the KDP series?

We primarily use Cummins, Yuchai, and Deutz engines to ensure reliable performance and easy access to spare parts worldwide.

5) Is the KDP series suitable for high-altitude mining?

Yes. Our diesel compressors are equipped with specialized intake systems and heavy-duty cooling to maintain peak performance in high-altitude and high-temperature environments.

6)Are these compressors CE and ISO certified?

Absolutely. The KDP series is fully CE approved, meeting international safety and quality standards for export to over 130 countries.

7) Can I get a custom-built pressure or CFM?

Yes, as a factory-direct manufacturer, we can customize the pressure and flow rate to match your specific drilling or industrial requirements.

8) What service and spare parts support do you provide for a diesel powered compressor?

For a diesel powered compressor, reliable after-sales support matters as much as the machine itself. We provide operating guidance, maintenance schedules, common spare parts support (filters/separators/consumables), and remote troubleshooting to reduce downtime. Tell us your region and usage pattern, and we’ll suggest a practical service plan for long-term operation.

Trustworthy Services:

Kotech is committed to providing exceptional pre-sales, during-sales, and after-sales services to ensure comprehensive support for customers in selecting, using, and maintaining the KDP-Series Diesel Mobile Air Compressor:

Professional Consultation: Kotech offers professional consultation services to assist customers in selecting the most suitable KDP-Series compressor configuration and specifications based on project requirements.

Technical Support: The Kotech technical team provides support, including equipment operation guidance, maintenance tips, troubleshooting assistance, and more, ensuring equipment remains in optimal condition.

Spare Parts Supply: Kotech provides genuine spare parts, ensuring equipment stability and sustained performance. Customers can confidently purchase and use Kotech products.

In conclusion, the Kotech KDP-Series Diesel Mobile Air Compressor, with its exceptional performance, prominent advantages, and comprehensive services, provides reliable solutions for a wide range of industrial applications. Whether in construction, manufacturing, energy sectors, or other industries, the KDP-Series compressor stands as a trusted partner.