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Electric compressor, oil-free
PTO250-MP80S2
Compact oil-free piston compressor for tyre inflation and on-board air.
Successor of the KOA-MP80S2
Air, vacuum and DC drive systems for vehicles
Electric from 18 to 330 l/min, hydraulic up to 11,000 l/min
Overview
Compressed air and vacuum straight from the vehicle's electrical system – no extra engine, no trailer. Our compressors run on 12 and 24 V or on the high-voltage system of electric and rail vehicles. For very high air demand we supply hydraulically driven DYNASET compressors.
- 12 / 24 V
- vehicle system, also 36, 48 and 80 V DC
- 80–800 V
- high voltage for EVs and rail
- 18–330 l/min
- electric, max. pressure 10 bar
- up to 11,000 l/min
- hydraulically driven
On-board compressors 12/24 V – piston and scroll
Professional compressors for vehicles, rail and industrial applications. Depending on the model, they cover everything from inflating tyres to running air tools such as impact wrenches or sandblasters. They can also support the air brake system.
- Piston compressors oil-free or oil-lubricated, scroll compressors oil-free and particularly smooth-running
- IP ratings from IP20 to IP54
- Overtemperature protection as standard
- ISO 9001 and NATO-approved products
- Spare parts available for many years
Selected on-board compressors at a glance
| Model | Type | Voltage / current | l/min at 3 bar | l/min at 10 bar | Duty cycle | IP rating | Weight | Dimensions L × W × H |
|---|---|---|---|---|---|---|---|---|
| PTO250-MP80S2 | Piston, oil-free | 12 V / 51 A · 24 V / 24 A | 95–113 | 52–72 | 30 min | IP20 | 8 kg | 299 × 141 × 237 mm |
| S13/D150 | Piston, oil-lubricated | 12 V / 67 A · 24 V / 38 A | 100–115 | 75 | 100 % (continuous) | IP23 | 24 kg | 485 × 210 × 285 mm |
| PTO500-BLPM | Piston, oil-free | 12 V / 68 A · 24 V / 48 A, optional 80 V | 166–200 | 92–133 | 45 min | IP54 | 12 kg | 470 × 275 × 275 mm |
This table is a selection. For further models see the complete catalogue (German) – let us prepare a quote for you!
Electric compressor for continuous duty, oil-lubricated
S13/D150
Oil-lubricated, 100 % duty cycle – for air tools in continuous use.
Supplied without pulley
Electric compressor, oil-free, IP54
PTO500-BLPM
Oil-free, IP54 – for exterior mounting on the vehicle, optionally with 80 V DC.
Scroll compressors 12/24 V
Oil-free, low-vibration and quiet – for clean air and long running times. Let us prepare a quote for you!
Available options
- Pressure switch, switch, safety valve, pressure gauge, water separator
- Air tanks 2 / 8 / 20 / 30 / 50 / 100 litres
- Tyre inflator with gauge, air hose
- Heavy-duty cable with battery clamps or high-current connector system
- Operating voltages 36 and 48 V DC, D150 models up to 80 V DC
- Transport and storage boxes
- Custom compressor/motor combinations and complete systems
For large models and intensive use we recommend our high-power alternators.
High-voltage compressors 80–800 V DC
For electric buses, electric trucks, hybrid and rail vehicles: the compressors run directly on the high-voltage system and supply brakes, air suspension, doors or pantographs – even when there is no combustion engine or it is switched off.
- Operating voltages 80 / 200 / 400 / 800 V DC
- Oil-free scroll and piston units
Vacuum pumps
Electric vacuum pumps for mobile and stationary use, for example brake boosters in electric vehicles, suction and handling equipment or test benches.
Hydraulic power packs and DC motors
Compact electro-hydraulic power packs for tippers, tail lifts, outriggers, ramps and bodies – wherever no power take-off is available or the engine should not run. Plus brushed and brushless DC motors and inverter-controlled three-phase motors.
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Hydraulic power packs
Let us prepare a quote for you!Electro-hydraulic power packs for bodies, tail lifts and tippers.
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DC motors
Let us prepare a quote for you!Brushed or brushless, for pumps, fans and drives.
For PTO-driven hydraulic systems see Hydraulics and Hydraulic power units.
Applications
Central tyre inflation (CTIS)
Air supply for deflating and re-inflating off-road – oil-free, 12/24 V.
Air brakes
Auxiliary or emergency supply for the brake system, even with the engine off.
Air tools in the field
Impact wrenches, blow-off, tyre inflation – without a compressor trailer.
Rail and electric vehicles
Pantographs, doors, air suspension and brakes from the high-voltage system.
Special vehicles and bodies
Integrated air, vacuum and hydraulic systems. See special vehicle construction.
System example: active axle and gearbox pressurisation
When a hot axle enters cold water, it cools down immediately. The air inside contracts and creates a vacuum that draws water and dirt past the seals into the axle or gearbox. That is why vehicle manuals require all axle and gearbox oils to be changed after fording.
Our system keeps axles and gearboxes under a precisely regulated, adjustable air pressure equal to a fording depth of about 1 m. This slight overpressure keeps water and dirt out. The additional load on the seals is negligible.
Two versions
| Active pressurisation kit | Passive pressurisation kit | |
|---|---|---|
| Principle | adjustable precision pressure regulator | stand-alone system, electric |
| Air source | existing compressor (filtered air, max. 10 bar) or turbocharger after the intercooler | own pump, 12 V or 24 V |
| Pressure | equal to approx. 1 m water depth | max. 150 mbar |
| Leak compensation | via the air source | 4.5 l/min at 50 cm water depth |
| Operation | permanently regulated | automatic when fording |
Kit contents
- 8 m plastic tube for fixing to the frame
- 5 m rubber hose to connect front axle, rear axle, transfer case and main gearbox
- 5 T-pieces for distribution
The system requires intact seals; it compensates for minor leaks.
DYNASET HK, HKR and EKR compressors
For high air demand: the compressors are driven by the vehicle hydraulics or – the EKR – directly by the vehicle battery. They replace the classic compressor trailer – with lower purchase cost, less maintenance and higher reliability, because no additional combustion engine is needed.
Installation example: tank cleaning vehicle project.
The ranges at a glance
| Range | Drive | Air output | Pressure | Feature |
|---|---|---|---|---|
| HK piston compressor | hydraulic | 450–1000 l/min | 8 or 12 bar | smallest model HK 450: oil flow 15 l/min, max. 210 bar, 35 kg |
| HKR screw compressor | hydraulic | 500–11,000 l/min | up to 15 bar | for 24/7 continuous duty |
| EKR electric screw compressor | electric (battery, DC) | 2500 or 4000 l/min | see data sheet | electrics IP65, continuous duty |
EKR electric screw compressor
The EKR is integrated into the electrical and cooling system of electric work machines, vehicles or vessels and uses the existing battery – no separate engine and no inverter. It runs continuously as long as the battery has charge.
- Models
- EKR 2500 (2500 l/min) and EKR 4000 (4000 l/min)
- IP rating
- IP65 for the electrical components
- Applications
- air tools, air flushing, sand and soda blasting, cylinders and actuators
Also available: HKR Above Deck – hydraulic screw compressor for mounting on work trucks and service vehicles, delivering compressed air right where you need it.
Downloads
- Complete compressor cataloguePDF · 3.6 MB · German
- Compressor portfolio and application overviewPDF · 7.8 MB · German
Data sheets of the DYNASET compressors: HK, HKR and EKR at dynaset.com.
For a fast quote, please tell us
- System voltage (12 / 24 V or high voltage)
- Required air flow and pressure or vacuum
- Duty cycle or operating profile
- Mounting location and required IP rating
- Quantity and requested delivery date
- Vehicle or programme
We are happy to sign our non-disclosure agreement in advance.
Please send orders and enquiries by email.
Open email with enquiry template