R38 Drill Bit (Heavy-Duty Button Bit) Self Drilling Anchor (SDA)
R38 HEAVY-DUTY ROCK DRILL BIT

R38 Drill Bit (Heavy-Duty Button Bit)

Heavy-duty sacrificial drill bits engineered for R38 Self Drilling Anchor bars, delivering high penetration rates in tough geotechnical drilling, hard bedrock, abrasive sandstone, and boulder formations. Available in large diameters (76mm to 110mm) for high-capacity tiebacks and micropiles.

Large Borehole Profile
Creates 76mm–110mm borehole for thicker protective grout cover
Ballistic Carbide Buttons
Maximizes energy transfer into hard rock matrices
Extreme Gauge Durability
Retains borehole gauge even after deep drilling passes
Heavy Shock Absorption
Engineered specifically for high-torque heavy hydraulic drifters
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ENGINEERING METRICS

TECHNICAL DATA & SPECIFICATIONS

Certified engineering tolerances, metallurgical grades, and load metrics for heavy geotechnical installations.

R38 Drill Bit (Heavy-Duty Button Bit) — Technical Data Sheet

Quality Assurance Standard: ISO 10208 / EN 14199

# Technical Metric Certified Specification
01
Bar Thread Connection
R38 Rope Thread (ISO 10208)
02
Bit Outer Diameters
76 mm (1.40 kg), 90 mm (1.80 kg), 110 mm (2.40 kg)
03
Cutting Element
Spherical & Ballistic Tungsten Carbide Buttons / Cross Chisel
04
Body Hardness
50–55 HRC High-Wear Alloy Steel Body
05
Insert Hardness
87–89 HRA Sintered Tungsten Carbide
06
Flushing System
High-velocity tri-port air/water/grout flushing nozzles
07
Ground Conditions
Hard granite, basalt, gneiss, boulder fill, and abrasive formations
100% Ultrasonic flaw tested and batch certified under ISO 9001:2015 QA procedures.
Request Mill Test Certificate (MTC)
Verified Technical Reference

R38 Drill Bit Flushing Dynamics & Penetration Specs

View Catalog PDF
Specifies R38N drill bits in 76mm, 90mm, and 110mm outside diameters. Premium tungsten carbide buttons combined with large internal and peripheral flushing ports enable high-speed penetration through abrasive strata and hard granite boulders.
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