2025-07-02 00:00:00 Inrock HDD Hydraulics Calculator – Precision underground, progress above. Made by Inrock – Over 30 Years of HDD Expertise Inrock HDD Hydraulics Calculator is a designed specifically for professionals in the Horizontal Directional Drilling industry. The app enables users to perform calculations to use the available hydraulic energy efficiently to clear cuttings from the bottom of the hole. This improves tool-cleaning, reduces cuttings re-grind to increase the cutting action efficiency and reduces pack-off and balling-up risk. By minimizing mechanical wear on the shirttail and cutting structure, the tool can achieve its full bearing life potential (kRevs).