The Chicago Pneumatic QRS7.5HP-1 TM is a 7.5 HP rotary screw compressor built for facilities that need continuous-duty air but only have 208-230V single-phase power. It combines an oil-injected rotary screw airend with a 60-gallon horizontal receiver, operates at 100% duty, runs at 64 dBA, and has a maximum working pressure of 150 PSI. The single-phase configuration is the key differentiator, giving workshops without three-phase service a way to use rotary screw technology without first upgrading their electrical supply. Chicago Pneumatic's rotary screw range is built in Italy by Atlas Copco. Note: the published information lists two different airflow ratings at 150 PSI—26.1 CFM and 21.2 CFM—so confirm the rated delivery of the specific unit before ordering.
The 100% duty rating is what separates this machine from a similarly sized piston compressor. Instead of operating within a limited run-time percentage and stopping to cool, the rotary screw airend is designed for continuous operation while the shop is drawing air. That makes sustained shop work less dependent on compressor recovery time and helps keep air available when multiple tools are being used. The 64 dBA sound rating also makes the QRS7.5HP-1 TM practical for indoor workshop environments where a louder compressor could become disruptive. With a 60-gallon receiver storing compressed air, the system can also respond to changing demand without relying entirely on the airend's immediate output.
This model is particularly suited to single-phase automotive workshops, independent repair shops, body and paint facilities, and businesses that have outgrown a piston compressor but cannot justify or accommodate a three-phase service upgrade. It is a strong option when continuous-duty performance matters more than short bursts of air, especially for shops running multiple pneumatic tools throughout the workday. Because the published airflow figures conflict, buyers should compare their actual tool demand against the confirmed CFM rating of the unit being supplied rather than choosing based on the higher published number.
Specifications
| Output and pressure |
|
| Rated flow (product heading) |
26.1 CFM @ 150 PSI |
| Rated flow (feature list) |
21.2 CFM at 150 psi — the two disagree; see the note above |
| Maximum pressure |
150 psi |
| Duty cycle |
100% |
| Motor and supply |
|
| Rated power |
7.5 HP |
| Supply |
208-230V |
| Phase |
1 Phase |
| Magnetic starter |
Fitted |
| Tank, size and noise |
|
| Receiver |
60 Gallon, horizontal |
| Tank outlet |
1/2" |
| Overall length |
57" |
| Weight |
362 lbs |
| Noise |
64 dBA |
| Air dryer |
Not fitted |
| Electronic drain valve |
Not fitted |
Without an electronic drain, clearing condensate from the receiver is a manual job somebody has to remember every week. It is the most common way a sound tank is ruined, and it costs nothing to put on the maintenance board.
Approvals, Stated Plainly
This product's data does not list a third-party safety certification for the complete packaged machine. We will not imply otherwise. The available documentation covers the manufacturer's specifications and factory commissioning program.
If your insurer, fleet or facility standard, or local authority requires independent listing documentation for hard-wired equipment, contact us before ordering. We will confirm what documentation is available for this model.
Shipping & Delivery
Ships by palletized freight to the lower 48 states, with shipping quoted live at checkout based on your delivery address.
At 362 lbs, plan for a forklift, loading dock or pallet jack on level ground. Terminal pickup is an alternative if unloading equipment is unavailable. Residential deliveries may incur an additional fee.
Inspect the machine before signing. Check the enclosure, receiver, control panel and fittings with the driver present. Record any damage or shortages on the bill of lading and take photographs before accepting the shipment.
Warranty
The standard warranty is 1 year, with a 5-Year warranty available when the compressor receives a factory-authorized start-up, typically quoted at $350.
The $350 fee is described as typical and is charged by the commissioning provider, so confirm the current cost before ordering. Professional commissioning also verifies key operating conditions such as rotation direction, oil level and control settings.
If a fault occurs, stop and isolate the machine before contacting us. Do not open or disassemble the airend before a warranty claim is evaluated. Photograph the condition and keep the unit assembled until instructed otherwise.
