The Core Bore 4-Speed Mounted Hydraulic Motor is a high-torque, rig-mounted core boring motor engineered to handle large diameter drilling tasks with precision and power. Built for hydraulic power systems, this motor delivers four selectable speeds to tackle a wide variety of materials and job-site conditions. Its hydraulic drive offers excellent control over RPM under load, providing the ability to match speed and torque for different bit sizes. With a 12-inch drilling capacity in standard configuration and up to 24-inch with extension, it’s an ideal solution for contractors, utilities, and industrial coring applications needing deep, clean cuts in concrete, masonry, or other hard surfaces.