DHD350R 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 DHD350R shank and Mincon Sales Technicians can work with you to determine the ideal design for your application.
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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.

For more information:

+40 314 253 800
info@romned.ro

Ron van Dam
CEO

Specifications Metric Imperial
Minimum Hole Size 130mm 5″
Number of Splines 8
Height of Foot Valve Above Strike Face 66.0mm 2.600″
Length of Shank 260mm 10.24″
Bearing Surface Diameter N/A
Mincon DTH Hammer(s) 55BH, 5DH
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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.

Carbide Insert Codes
Dome (Spherical) D
Ballistic B
Semi-Ballistic (Parabolic) P
Conical (Spike) S
Dome PCD Y
Diameter Face Type Part Number No. x Button Dia (inch) Flushing holes Weight Approx.
mm inch Outer Inner Front Kgs. Lbs.
127 5 Concave 50350RC58 8 – 5/8″ 4 – 1/2″ 3 – 1/2″ 2 15.9 35
130 5.125 Concave 51350RC58 8 – 5/8″ 4 – 1/2″ 3 – 1/2″ 2 15.9 35
133 5.25 Concave 52350RC58 8 – 5/8″ 4 – 9/16″ 3 – 9/16″ 2 16.3 36
140 5.5 Concave 54350RC58 8 – 5/8″ 4- 9/16″ 4- 9/16″ 2 17.3 38
140 5 1/2 Flat Face 54350RF58 8 – 5/8″ 7 – 5/8″ 2 17.3 38
140 5 1/2 Convex 54350RV59 9 – 5/8″ 6- 9/16″ 4- 9/16″ 3 17.3 38
146 5 3/4 Concave 56350RC58 8 – 5/8″ 4- 5/8″ 4- 5/8″ 2 17.7 39
146 5 3/4 Flat Face 56350RF58 8 – 5/8″ 8 – 5/8″ 2 17.7 39
140 5 3/4 Convex 56350RV59 9 – 5/8″ 3 – 5/8″ 5 – 5/8″ 3 17.7 39
149 5 7/8 Concave 60350RC58 8 – 5/8″ 4 – 5/8″ 4 – 5/8″ 2 18.6 41
152 6 Concave 60350RC58 8 – 5/8″ 4 – 5/8″ 4 – 5/8″ 2 18.6 41