Eccentric Reamer System Step-by-step

　　1. When drilling starts, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill the drill bit assembly.

　　2. When the required depth is reached, rotation is reversed carefully, where upon the reamer swings in, allowing the drill bit assembly to be pulled up through the casing.

　　3. Casing tubes that are to be left in the drilling hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.

　　4. Drilling continues to the desired depth in the bedrock using a conventional drilling.

　　drilling.Specifications:

　　Model

　　KEOD90

　　KEOD115

　　KEOD140

　　1

　　Casing Tube

　　Maximum

　　O.D.: 115mm

　　Minimum I.D.: 102mm

　　Maximum

　　O.D.: 142mm

　　Minimum I.D.: 128mm

　　Maximum

　　O.D.: 171mm

　　Minimum I.D.: 155.6mm

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