R25 Drill Bit (Cross Bit) Self Drilling Anchor (SDA)
R25 SACRIFICIAL ROCK DRILL BIT

R25 Drill Bit (Cross Bit)

Sacrificial rotary-percussive drill bits designed specifically for R25 Self Drilling Anchor bars (ISO 10208). Available in Hardened Steel Cross Bits (EX), Tungsten Carbide Cross Bits (EXX), Hardened Button Bits (ESF), and Tungsten Carbide Button Bits (ESSF) for soft soils to medium rock formations.

Rapid Penetration
Optimized cutting geometry accelerates drilling cycle
Dual Diameter Options
42mm for standard boreholes, 51mm for expanded grout encapsulation
Hardened / TC Inserts
Premium sintered carbide inserts resist abrasive gauge wear
Single-Pass Sacrificial
Left in borehole as permanent grout anchor tip
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ENGINEERING METRICS

TECHNICAL DATA & SPECIFICATIONS

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

R25 Drill Bit (Cross Bit) — Technical Data Sheet

Quality Assurance Standard: ISO 10208 / EN 14199

# Technical Metric Certified Specification
01
Bar Thread Connection
R25 Rope Thread (ISO 10208)
02
Bit Outer Diameters
42 mm (Unit Wt: 0.30 kg) and 51 mm (Unit Wt: 0.40 kg)
03
Bit Configurations
Hardened Cross (EX), TC Cross (EXX), Hardened Button (ESF), TC Button (ESSF)
04
Hardness Range
Hardened Steel: 50–55 HRC | Tungsten Carbide: 87–89 HRA
05
Ground Suitability
Soft clay, sand, gravel, weathered shale, and medium rock
06
Flushing Dynamic
Multi-port internal flush channels for air, water, or cement grout
07
Thread Hand
Left-Hand (Standard) or Right-Hand
100% Ultrasonic flaw tested and batch certified under ISO 9001:2015 QA procedures.
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Verified Technical Reference

R25 Drill Bit Application Matrix & Configurations

View Catalog PDF
The R25 sacrificial drill bit series features cutting diameters of 42mm and 51mm. Hardened cross bits (EX) operate effectively in loose conditions, TC cross bits (EXX) in soft rock, hardened button bits (ESF) in boulder formations, and TC button bits (ESSF) in medium abrasive formations.
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