Stepped Drag Bits
Stepped drag bits are drill bits used to drill holes in soft to medium-hard formations such as sandstone, shale, and clay.
These bits have a stepped profile, meaning they have different-sized cutting elements spaced along the bit.
The cutting elements on stepped drag bits are typically made of tungsten carbide or diamond inserts, which provide high wear resistance and durability.
The stepped design allows the bit to penetrate the formation more efficiently and reduces the risk of getting stuck in the hole.
We supply all sizes of drag/clay bits
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Product Features:
ADM ND35A Hammer used in drilling especially in quaries has the following specifications
Length-886mm
Weight-24.2 kg
Outer diameter-82mm
Connection Thread-AP12 3/8” REG
Bit shank-ND35A
Hole Range-90-115mm
Work Pressure-1.0-1.7Mpa
Recommended Rotation Speed-30-50/min
Air Consumption-4m3/min -6.5m3/mim


