r5.5i-a125-80 Specifications, Features & Compatibility Guide

The R5.5i-A125/80 utilizes an oil-injected rotary screw design where the 5.5 kW motor drives the pump at 3475 rpm to generate 780 LPM of airflow. This direct or belt-driven configuration is specifically optimized for 100% duty cycles, meaning the 7.5 HP motor does not require rest periods during a full 60 Hz operational shift. The 8.6 bar (125 psi) max pressure is regulated via an automatic cut-off and pressure switch, preventing overpressure while the 302.83 L tank acts as a buffer to stabilize air delivery for fluctuating demands. Heat management is handled by an air-cooled system and thermal protection, which is critical for maintaining the viscosity of the oil-injected lubrication. By housing these components in a noise-insulated body, Ingersoll Rand reduced the acoustic output to 69 dBA, which mitigates the need for a dedicated remote compressor room. The inclusion of a moisture separator directly after the pump ensures that the 27.5 cfm output is conditioned for pneumatic tools before it enters the horizontal receiver.