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{"title":"48mm Tapered Button Bits Carbide Rock Drill Bit Percussive Drilling Tool for","imgUrl":"https:\/\/img.chinax.com\/nimg\/df\/1e\/2bc13e50ced886017352ff471b15-200x200-1\/48mm_tapered_button_bits_carbide_rock_drill_bit_percussive_drilling_tool_for.jpg","attrs":{"Taper Angle":"6 degree,7 degree, 11 degree, 12 degree","Insert Process":"Hot-Pressed Brazing","Compatible Equipment":"Handheld Rock Drill, Light Pneumatic or Hydraulic Rig","Suitable Rock Formation":"Medium-Hard to Hard Rock"}}
{"title":"32mm Tapered Button Bit Alloy Steel Carbide Insert for Mining Quarrying Rock","imgUrl":"https:\/\/img.chinax.com\/nimg\/fd\/b3\/c18bc543033a4a04ed135c5fad1d-200x200-1\/32mm_tapered_button_bit_alloy_steel_carbide_insert_for_mining_quarrying_rock_drilling.jpg","attrs":{"Typical Button Quantity":"4\u20137 Buttons","Surface Treatment":"Shot Blasting, Anti-Rust Treatment","Price":"USD3.5-8.00 Piece","Place of Origin":"Hunan,China"}}
{"title":"38mm Tapered Button Drill Bit Tungsten Carbide Rock Drilling Tool for Quarrying","imgUrl":"https:\/\/img.chinax.com\/nimg\/19\/6f\/564884a741df4a86ff534ac48b30-200x200-1\/38mm_tapered_button_drill_bit_tungsten_carbide_rock_drilling_tool_for_quarrying_mining_tunneling_construction.jpg","attrs":{"Connection Type":"Tapered Socket Connection","Button Material":"Tungsten Carbide","Manufacturing Process":"Forging, Heat Treatment, Precision Machining","Packaging Details":"Standard export carton with protective foam insert, customizable brand packaging available"}}
{"title":"40mm Tapered Button Bit Tungsten Carbide Rock Drilling Tool for Quarrying Mining","imgUrl":"https:\/\/img.chinax.com\/nimg\/48\/16\/ad03a7778186c58b0d2efb95823c-200x200-1\/40mm_tapered_button_bit_tungsten_carbide_rock_drilling_tool_for_quarrying_mining_tunneling_construction.jpg","attrs":{"Connection Type":"Tapered Connection","Button Material":"Tungsten Carbide","Applicable Rock Formation":"Medium to Hard Rock","Place of Origin":"China"}}
{"title":"34mm Tapered Button Bits Tungsten Carbide Alloy Steel for Mining Quarrying Rock","imgUrl":"https:\/\/img.chinax.com\/nimg\/ae\/b8\/85a3f60e0c11e17d55c4d9c1535a-200x200-1\/34mm_tapered_button_bits_tungsten_carbide_alloy_steel_for_mining_quarrying_rock_drilling.jpg","attrs":{"Brand Name":"Custom","Model Number":"34MM","Packaging Details":"Individual box with anti-rust wrapping, export-grade corrugated carton or wooden case","Connection Type":"Tapered Socket"}}
{"title":"Carbide Rock Drill Tapered Button Bits 32-50mm Diameter Custom Taper Angle for","imgUrl":"https:\/\/img.chinax.com\/nimg\/84\/a6\/4ec6f45bc61847ec63e774dcb989-200x200-1\/carbide_rock_drill_tapered_button_bits_32_50mm_diameter_custom_taper_angle_for_mining.jpg","attrs":{"Brand Name":"Custom","Suitable Rock Formation":"Soft, Medium, Hard Rock","Certification":"","Taper Angle":"6 degree, 7 degree, 9 degree, 11 degree"}}
{"title":"7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg","imgUrl":"https:\/\/img.chinax.com\/nimg\/ea\/ca\/1e48465fa5a5b316d5f0d4df7c4c-200x200-1\/7_degree_tapered_rock_drill_bit_h22_26_42mm_carbide_button_bit_for_yt28_air_leg_rock_drill.jpg","attrs":{"Bit Type":"Carbide Button Bit","Payment Terms":"T\/T,L\/C,Western Union","Model Number":"","Minimum Order Quantity":"10 Pieces"}}
The 48mm Tapered Button Bit is a percussive rock drilling tool specifically engineered for handheld pneumatic or light hydraulic rock drilling equipment. Its tapered shank design utilizes a conical self-locking connection — commonly available in 6°,7°, 11°, and 12° standard taper angles — that eliminates the need for external clamping chucks while delivering reliable torque transmission under high-frequency impact loads. The 48mm diameter body, combined with premium tungsten carbide inserts (available in button, cross, or chisel configurations), is optimized for medium-hard to hard rock formations where efficient blast hole and anchor bolt hole drilling is required.
Applications
Coal Mine Anchor Support: Drilling anchor bolt holes for mesh-reinforced roof and rib support systems in underground coal mining operations
Traffic Tunnel Excavation: Primary support drilling and blast hole preparation during tunnel construction across highway and railway projects
Rock Blasting Engineering: Short-hole blast drilling for quarry bench blasting, trench excavation, and secondary rock breaking
Foundation and Slope Works: Rock anchor drilling for slope stabilization, retaining wall anchoring, and foundation reinforcement
General Underground Construction: Utility tunnel drilling, shaft sinking, and other infrastructure projects requiring handheld percussive drilling
Features and Advantages
Anti-Slip Self-Locking Connection: The tapered shank generates friction-driven axial self-locking under impact — far exceeding straight-shank torque capacity — completely eliminating relative rotation wear and bit detachment
High Impact Durability: 48mm body paired with hot-pressed brazed tungsten carbide inserts delivers exceptional wear resistance and impact fracture toughness in medium-hard to hard rock
Rapid Tool-Free Bit Changes: No complex clamping mechanisms required — simple knock-on installation and knock-off removal dramatically reduce downtime in frequent-change underground operations
Straight-Hole Guidance: Optimized body geometry with flute channels assists rock debris evacuation while maintaining borehole straightness and minimizing deviation during extended drilling runs
Multiple Insert Configurations: Available with button, cross, or chisel carbide tip profiles to match specific rock hardness and fracturing characteristics for maximum penetration efficiency
Cost-Effective Operation: Compared to threaded drill systems, the taper connection offers simpler construction, lower failure rates, and reduced cost-per-meter in handheld drilling applications
Broad Equipment Compatibility: Designed to work with standard tapered drill rods and compatible with major handheld pneumatic and hydraulic rock drill models used globally
Technical Specifications
Parameter
Specification
Bit Diameter
48mm
Taper Angle
6°,7°, 11°, 12° (Industry Standard)
Connection Type
Tapered Shank (Conical Self-Locking)
Insert Type
Tungsten Carbide — Button, Cross, or Chisel
Insert Bonding Process
Hot-Pressed Brazing
Body Material
High-Grade Alloy Steel, Heat Treated
Suitable Rock Formation
Medium-Hard to Hard Rock
Drilling Method
Percussive (Top Hammer)
Compatible Equipment
Handheld Pneumatic Rock Drill, Light Hydraulic Drilling Rig
Compatible Rod Type
Tapered Hexagonal or Round Drill Rod (Matching Taper Angle)
Primary Applications
Anchor Bolting, Blast Hole Drilling, Tunnel Support
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
500-1000
Employee Number:
50~100
Ecer Certification:
Verified Supplier
Brighttop Global Co., Ltd. is a professional and trusted supplier of expansive mortar, rock drilling tools and related equipment for the quarrying, mining, construction, demolition and tunneling industries. With extensive industry experience, we provide reliable products, practical technical support... Brighttop Global Co., Ltd. is a professional and trusted supplier of expansive mortar, rock drilling tools and related equipment for the quarrying, mining, construction, demolition and tunneling industries. With extensive industry experience, we provide reliable products, practical technical support...