4 Inch DTH Bits

MD4_Overview
MD4
Minimum Hole Size: 4.125″
Number of Splines: 10
Height of Foot Valve Above Strike Face: 2.200″
Length of Shank: 8.25″
Running Surface Diameter: N/A
Mincon DTH Hammer: 4HDS
DHD340A_Overview
DHD340A
Minimum Hole Size: 4.125″
Number of Splines: 8
Height of Foot Valve Above Strike Face: 2.200″
Length of Shank: 8.25″
Running Surface Diameter: N/A
Mincon DTH Hammer: 4HR
SD4_Overview
SD4
Minimum Hole Size: 4.125″
Number of Splines: 8
Height of Foot Valve Above Strike Face: 2.035″
Length of Shank: 10.25″
Running Surface Diameter: N/A
Mincon DTH Hammer: 4HRSD

 

TD40_Overview
TD40
Minimum Hole Size: 4.375″
Number of Splines: 12
Height of Foot Valve Above Strike Face: 2.256″
Length of Shank: 8.23″
Running Surface Diameter: N/A
Mincon DTH Hammer: 4HRTD