DHD3.5 Shank

Mincon has a comprehensive range of DTH Drill Bits to suit all types of applications and drilling processes. There are a number of different drill bit head designs for the MD3.5 shank and Mincon Sales Technicians can work with you to determine the ideal design for your application.

Key Features and Benefits

  • Manufactured from premium alloy steels. 
  • Proprietary heat treatment processes to provide maximum service life and durability.
  • Compressive residual stress layer added to improve metal fatigue resistance.
  • Specifications
  • Drill Bits
  • Documents
Specifications
Specifications Metric Imperial
Minimum Hole Size 85mm 3 3/8"
Number of Splines 8
Height of Foot Valve Above Strike Face 58.4mm 2.300"
Length of Shank 181mm 7.11"
Bearing Surface Diameter N/A
Mincon DTH Hammer(s) 3, 3.5
Drill Bits

Note: The Part Numbers below require the Carbide Insert type code to be added on the end to complete them. For a combination of carbide inserts use the gauge row code first and then the face code.

Diameter Face Type Part Number No. x Button Dia (inch) Flushing holes Weight Approx.
mm inch   Outer Inner Front   Kgs. Lbs.
90 3 1/2 Concave 34IR35C76 6- 7/16" 3 - 7/16" 3 - 7/16" 2 5 11
90 3.5 Flat Face 34IR35F76 6- 7/16" 6 - 7/16" 2 5 11
90 3.5 Convex 34IR35V77 7 - 7/16" 3 - 7/16" 3 - 7/16" 2 5 11
92 3.625 Convex 35IR35V77 7 - 7/16" 3 - 7/16" 3 - 7/16" 2 5 11
95 3 3/4 Concave 36IR35C78 7 - 7/16" 4 - 7/16" 2 - 7/16" 2 5 11
95 3 3/4 Flat Face 36IR35F18 8 - 1/2" 6 - 7/16" 2 5 11
95 3 3/4 Convex 36IR35V17 7 - 1/2" 3 - 1/2" 2 - 1/2" 2 5 11
98 3 7/8 Concave 37IR35C78 8 - 7/16" 4 - 7/16" 2 - 7/16" 2 5.9 13
98 3 7/8 Flat Face 37IR35F96 6 - 9/16" 6 - 1/2" 2 5.9 13
98 3 7/8 Convex 37IR35V78 8 - 7/16" 4 - 7/16" 4 - 7/16" 2 5.9 13
102 4 Concave 40IR35C78 8 - 7/16" 4 - 7/16" 4 - 7/16" 2 6.4 14
102 4 Flat Face 40IR35F78 8 - 7/16" 7 - 7/16" 2 6.4 14
105 4 1/8 Concave 41IR35C78 8 - 7/16" 4 - 7/16" 4 - 7/16" 2 6.8 15
105 4 1/8 Convex 41IR35V78 8 - 7/16" 4 - 7/16" 4 - 7/16" 2 6.8 15
Documents

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