The Stellar® 45R Hydraulic-Driven Rotary Screw Air Compressor is designed for demanding, heavy-duty applications. It is built tough for 100% continuous-duty operation and is great for the heavy equipment mechanic who requires a large volume of air to power a 1″ impact wrench and to quickly inflate large tires.


Additional Information

Durability Standard

  • The rotary screw compressor air-end is oil-injected to eliminate metal-to-metal contact of the two compressor screw lobes.
  • The result is an air compressor designed for 100% continuous-duty cycle with extremely long life.
  • The rotary screw compressor air-end is belt-driven by a heavy-duty hydraulic motor for reliable service.
  • Oil/water separation system and oil filtration of the compressor for long life.
  • System includes a dual-purpose, integral cooler for both the compressor oil and the truck’s hydraulic oil. For most applications, this eliminates the need for a separate hydraulic oil cooler, saving you money.
  • For safety and reliability, the system includes a pressure relief valve, minimum pressure/check valve, automatic air pressure relief upon shutdown and a safety relief.

Ease of Use

  • Bulkhead fittings for quick and simplified hookup. Hydraulic supply lines, return lines and electric power supply connector are all located at one end of the compressor enclosure.
  • Includes an attractive powder-coated steel enclosure with a flip-up lid and pneumatic hold-open for easy access to all maintenance points.
  • Enclosure also includes easy-to-read temperature gauge and hour meter. A resettable safety relay is also conveniently located on the outside of the enclosure.
  • Oil level check/refilling is simplified by access from outside the unit.
  • Automotive-type air cleaner for high capacity and long life.


Output Capacity: 45 cfm @ 100 psi
Max Pressure: 150 psi
Hydraulic Req: 12 gpm @ 2,600 psi
Electrical Control: 12V @ 20 amps
Weight: 325 lbs
Dimensions: 28.75"L x 21.75"W x 23"H
Single-stage oil-injected

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Because different people use service vehicles in different ways, Stellar makes it easy to outfit yours with a wide range of accessories.

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