R Thread Bars – R32
R25 R32 R38 R51 T30 T40 T76

Self-drilling anchor (SDA) combines drilling, insertion and grouting into one easy operation. It reduces project lead time and installation difficulty. Mayland Metallic Materials Ltd. utilizes low carbon steel in all of its anchor production. Low carbon content in steel increases its ductility, reduces its brittleness, and resists corrosion cracking and carbon embrittlement. This choice of material significantly reduces occurrences where rockbolt may snap or buckle during onsite installation.

Anchor Body Drill Bit Hex Nut Arch Plate Coupler

Test Report Link Goes Here

Anchor Body

Rock Bolt Type Outer Diameter Inner Diameter Weight Cross Section Area Yield Load Ultimate Tensile Load
R32L 32 mm 21 mm 2.80 kg/m 363 mm2 200 kN 260 kN
R32N 32 mm 18.5 mm 3.40 kg/m 396 mm2 230 kN 280 kN
R32S 32 mm 15 mm 4.10 kg/m 488 mm2 280 kN 360 kN

Hex Nut

Hex Nut Type Width Across Flats Length Thread Direction Weight
R32 46 mm 45 mm L 0.40 kg/pc

Drill Bit

EW
EXX
ESSF
EW Clay
Drill Bit Size Drill Bit Type Condition Outer Diameter Weight Thread Direction
R32 EX – Steel Cross Mixed Soils – Soft to Medium Conditions 51 mm 0.40 kg/pc Left
R32 EXX – Carbide Cross Mixed Soils – Soft to Medium Conditions 51 mm 0.40 kg/pc Left
R32 ESSF – Tungsten Carbide Button Bit Medium Soil Condition 51 mm
76 mm
0.47 kg/pc
1.60 kg/pc
Left
Left
R32 EW – Clay Bit Clay and Loose Soil 76 mm 0.60 kg/pc Left

Coupler

Coupler Type Outer Diameter Length Thread Direction Weight
R32 42 mm 160 mm Left 0.80 kg/pc

Arch Plate

Arch Plate Type Width Length Thickness Hole Diameter Weight
R32N 150 mm 150 mm 8 mm 35 mm 1.40 kg/pc
R32S 200 mm 200 mm 10 mm 35 mm 3.00 kg/pc
R32S 200 mm 200 mm 12 mm 35 mm 3.70 kg/pc