200mm Diameter T Thread Tungsten Carbide Buttons ESSF Sacrificial Button Bit For Anchor Drilling
Premium 200mm ESSF hardened tungsten carbide button sacrificial drill bits matched with T103 / T108 / T111 / T130 self drilling anchor bolts. Made of EN10083, 4140 42CrMo alloy steel, 123mm length, 28*10mm carbide buttons. Ideal for tunneling slope stabilization, mine ground support, unconsolidated boulder mixed strata, one step drill grout anchor geotechnical construction consumables.
ESSF Sacrificial Button Drill Bits Matching T Series Self Drilling Hollow Anchor Bolts
As the disposable sacrificial core component of the whole anchor system, ESSF button drill bits directly determine drilling penetration speed, hole forming quality and overall project consumable expenditure. Our standardized 200mm ESSF carbide button bits are specifically designed for T103 / T108 / T111 / T130 threaded hollow anchor bars, solving drilling bottlenecks in unconsolidated rock, gravel and broken tunnel surrounding rock.
This heavy duty ESSF sacrificial button bit adopts integrated forging and high temperature vacuum heat treatment, with unified dimensional standards compatible with full T series self drilling anchor bolts.
| Specification |
Details |
| Total Outer Drilling Diameter |
200mm |
| Matching Anchor Bar Thread |
T103 / T108 / T111 / T130 trapezoidal thread |
| Bit Body Raw Material Options |
EN10083 alloy structural steel, 4140 alloy steel, 42CrMo high-strength quenched steel |
| Overall Bit Length |
123mm |
| Tungsten Carbide Button Specification |
28*10mm spherical wear resistant buttons |
| Outer Body Diameter |
120mm |
| Central Inner Through Hole Diameter |
70mm (smooth channel for air flushing and grout circulation) |
| Single Piece Gross Weight |
14.65kg |
The reserved central hollow passage with 70mm inner diameter is a core optimized design of this ESSF bit. During drilling construction, compressed air or clean water can smoothly circulate through the hollow anchor bar and the bit inner hole to flush out rock cuttings and gravel residues in real time; once drilling reaches the designated depth, high pressure cement grout can be injected instantly through the same channel.
Core Logic of Matching Sacrificial Drill Bits for Self Drilling Anchor System
The one piece hollow self drilling anchor bolt realizes three core construction procedures in a single operation: rock drilling, ground anchoring and pressure grouting, which greatly shortens the construction cycle of slope stabilization, tunnel forepoling and underground mine roof support.
Unlike reusable conventional rock drill bits designed for long service life, ESSF series bits belong to disposable sacrificial drill accessories, which will stay at the bottom of the borehole permanently after anchor installation. Our R & D team balances wear resistance and cost effectiveness in material proportioning to help construction parties cut down unnecessary consumable input while guaranteeing stable drilling safety.
Besides independent matching with T thread hollow anchor bars, we also supply customized drill bit adapters for customers' multi specification anchor bar inventory, expanding the compatibility of ESSF button bits and reducing the variety of drilling tools stored on construction sites.
Applications
This 200mm ESSF sacrificial button drill bit matched with T thread self drilling anchor bolts targets high demand geotechnical construction projects worldwide:
- Highway railway tunnel forepoling and surrounding rock systematic support
- Mountain slope stabilization and high rise deep foundation pit anchoring
- Underground coal mine and metal mine roof safety support
- Water conservancy dam and river bank foundation reinforcement
- Municipal underground comprehensive pipe gallery rock stratum reinforcement
