Blowing air is directed through the drill rod at all drilling speeds to clear debris from the hole for less downtime. Direct Rotation of the Piston. Reduces torque loss and eliminates wearing parts, such as the rifle bar assembly.Eliminates conventional spring ratchet systems by spreading the torque over four check pawls, increasing durability. Assures direct lubrication to rotating parts; use of standard 90 to 140-weight gear lubricant extends part life. Special rock drill oil is not required. Normal oil carryover from the compressor & moisture in the air usually provide sufficient lubrication under normal operation conditions. Less Maintenance With Only 2 Moving Parts. Unique design eliminates many high wear parts resulting in less loss of power due to wear, less downtime to replace worn parts & lower overall maintenance costs. The item "Sullair MRD-30 Pneumatic Rock Drill with 7/8 X 3-1/4 Chuck (53 CFM)" is in sale since Monday, February 24, 2020. This item is in the category "Home & Garden\Tools & Workshop Equipment\Air Tools & Air Compressors\Air Drills". The seller is "yknotwood" and is located in Portland, Oregon.
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