The Chicago Pneumatic QRS3.0HP-3 is a 3 HP rotary screw compressor designed for smaller shops that need continuous compressed air without the rest cycles of a piston machine. It delivers 8.5 CFM at 150 PSI, operates at just 61 dBA, and is rated for a 100% duty cycle, so it can continue running as long as the shop requires air. This three-phase version runs on 208-230/460V, 3-phase power and combines a TEFC Baldor motor with a 60-gallon horizontal ASME/CRN receiver. The result is a compact air system aimed at steady, moderate demand rather than high-volume applications.
The biggest advantage is the 100% duty rating. A comparable reciprocating compressor needs cooling periods during extended use, while the rotary screw airend is designed for continuous operation. At 8.5 CFM, the QRS3.0HP-3 is well suited to intermittent pneumatic tools such as impact wrenches, ratchets, blow guns, and tire inflation. Applications with sustained air consumption, including continuous sanding, blasting, or prolonged spray-gun use, can exceed the capacity of a compressor this size, so tool demand should be matched to the machine before ordering. The 61 dBA operating level also makes it practical to position the compressor closer to the work area.
This model is a good fit for small three-phase automotive shops, one- or two-technician bays, fabrication areas, and maintenance operations that need continuous air without stepping up to a larger compressor. The TEFC Baldor motor provides a clearly identified, serviceable motor rather than an unspecified component, while the three-phase configuration is suited to facilities that already have the required electrical supply. The product information contains conflicting claims regarding an integrated air dryer, so the dryer configuration should be confirmed before purchase.
Specifications
| Output and pressure |
|
| Rated flow |
8.5 CFM at 150 psi |
| Maximum pressure |
150 psi |
| Duty cycle |
100% |
| Control |
Start/stop operation |
| Motor and supply |
|
| Rated power |
3 HP |
| Motor |
TEFC Baldor |
| Supply |
208-230/460 Volt |
| Phase |
3 Phase |
| Control panel |
UL and cUL approved |
| Magnetic starter |
Fitted |
| Tank, size and noise |
|
| Receiver |
60 Gallon, horizontal, ASME/CRN |
| Tank outlet |
1/2" |
| Overall length |
56.3" |
| Weight |
397 lbs |
| Noise |
61 dBA in a low sound enclosure |
| Air dryer |
To be confirmed — see above |
| Electronic drain valve |
Not fitted |
Without an electronic drain, condensate removal is a manual weekly habit. It costs a minute and it is the job most often forgotten, right up until the receiver pays for it.
Approvals, Stated Clearly
The two listed approvals cover separate parts of the machine: UL/cUL for the control gear and ASME/CRN for the pressure vessel. Neither is a third-party safety listing for the complete compressor assembly.
Electrical installation must meet local code and be completed by a qualified electrician. Any applicable pressure-vessel inspection requirements also remain in effect.
If your insurer, fleet policy or local authority requires specific listing or certification documents, contact us before ordering. We will confirm what this model can document.
Shipping & Delivery
Ships by palletized freight to the lower 48 states, with shipping quoted live at checkout based on your address.
At 397 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 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 photos before accepting the shipment.
Warranty
A 5-Year warranty is available with an authorized start-up. The current listing does not publish the full warranty terms or commissioning cost, so contact us before ordering and we will confirm both in writing.
Professional commissioning verifies key items 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 the warranty claim is evaluated. Photograph the condition and keep the unit assembled until instructed otherwise.
