4 Speed, 400-1,450 RPM Core Drill Unit
The CD-C500-7.5MS is a medium RPM 4 speed Cardi Gearbox powered by a 7½ HP/400HZ water cooled motor, designed for rapid drilling with our new generation of diamond bits designed to cut both concrete and reinforcing steel at high RPM without becoming dull.
The RPM range of this core drill unit has a 3:3 spread and its output speeds are approximately 400, 650, 950 and 1,450. The gearbox is protected by an internal slip clutch and has a solid output shaft for accurate starting and drilling of holes.
It is designed to work on any core drill machine with 3” or larger columns and matching SB-400-25 Switch box.
It is best suited for drilling holes between 1” and 12” diameter.