R32 Integral Reaming Drill Bit 67mm - 102mm with Grade Heat Treatment and Full CNC Precision Machining

Henglong's R32 integral reaming drill bits are high performance rock drilling and hole reaming solutions tailored for mining, quarrying and rock engineering projects. Covering a diameter range of 67mm to 102mm (2 1/2" - 4"), our reaming bits and T.C. tipped pilot adaptors deliver stable, efficient hole enlargement. Custom reaming tools for larger borehole sizes are also available to meet diverse project demands.

Crafted with premium high alloy steel body and top tier tungsten carbide buttons matching international brand standards, our reaming bits adopt professional thermal hot insertion technology for carbide button embedding. This sophisticated process ensures firm button fixation, outstanding wear resistance and reliable performance in harsh rock drilling environments.

• Full CNC Precision Machining : The whole bit undergoes integrated CNC processing, realizing unified dimensional accuracy and consistent product quality for every finished piece.

• Grade Heat Treatment : Adopting strict standard thermal treatment technology, the drill bit body boasts enhanced toughness, structural stability and ultra long service life, resisting deformation and damage during high intensity drilling.

• Efficient High Precision Drilling : Optimized flute and cutting edge structure enables fast rock penetration. It produces straight, smooth and clean boreholes with low deviation, effectively improving overall drilling efficiency and reducing secondary processing work.

This integral reaming drill bit features a dual functional design consisting of a front drilling section and a rear reaming section. The drilling end is equipped with multi flute cutting edges for rapid pilot hole drilling. Each flute surface is designed with a precision inclined relief structure to form independent reaming cutting edges.

With this structural design, the bit can complete pilot drilling and one time hole reaming enlargement, realizing integrated drilling reaming operation and greatly simplifying construction procedures.