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{"title":"38mm Spherical Teeth , Short Body , Tapered Drill Bit , Rock Drilling","imgUrl":"https:\/\/img.chinax.com\/nimg\/a0\/63\/f01db051c1afb86b85abd0a248be-200x200-1\/38mm_spherical_teeth_2c_short_body_2c_tapered_drill_bit_2c_rock_drilling.jpg","attrs":{"Minimum Order Quantity":"10PCS","Delivery Time":"7 - 15 Days","Steel Grade":"45CrNiMoVA","Button Quantities":"4 to 9 carbide teeth"}}
{"title":"SR32 41mm Threaded Button Bit with YK05 Tungsten Carbide for Rock Drilling","imgUrl":"https:\/\/img.chinax.com\/nimg\/40\/fb\/13425e230bda090aac3238fb168b-200x200-1\/sr32_41mm_threaded_button_bit_with_yk05_tungsten_carbide_for_rock_drilling.jpg","attrs":{"Brand Name":"HLDRILL","Model Number":"SR32\u00d741mm","Place of Origin":"CHINA","Minimum Order Quantity":"10PCS"}}
{"title":"10 Tooth T38 Thread Retrac Button Bit Drilling For Medium Hard Hard Rock","imgUrl":"https:\/\/img.chinax.com\/nimg\/96\/31\/1a5c78acc9eab118ff65aec09f77-200x200-1\/10_tooth_t38_thread_retrac_button_bit_drilling_for_medium_hard_hard_rock_formations.jpg","attrs":{"Brand Name":"HLDRILL","Place of Origin":"CHINA","Minimum Order Quantity":"10PCS","Price":"Please contact us"}}
{"title":"7 Tooth 11 Degree Taper Button Bit 42mm Diameter For Rock Drilling","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/80\/0b3c550383e49044abac6d2ee11a-200x200-1\/7_tooth_11_degree_taper_button_bit_42mm_diameter_for_rock_drilling.jpg","attrs":{"Brand Name":"HLDRILL","Place of Origin":"CHINA","Minimum Order Quantity":"10PCS","Price":"Please contact us"}}
{"title":"14 Tooth T51 Threaded Button Bit Impact Resistant Anti Jamming","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/41\/34a8d8f4bafbe4a99fd8748abaad-200x200-1\/14_tooth_t51_threaded_button_bit_impact_resistant_anti_jamming.jpg","attrs":{"Brand Name":"HLDRILL","Model Number":"7516-1915-S48","Place of Origin":"CHINA","Minimum Order Quantity":"10PCS"}}
{"title":"45mm R25 Button Ballistic Bit","imgUrl":"https:\/\/img.chinax.com\/nimg\/75\/59\/6efdbeedb3ade000d7524e51749b-200x200-1\/45mm_r25_button_ballistic_bit.jpg","attrs":{"Certification":"ISO 9001 Certified","Brand Name":"HLDRILL","Place of Origin":"CHINA"}}
Professional - grade tapered button drill bits deliver reliable rock-breaking performance for shallow hole drilling, blasting preparation , tunnel development and ground anchoring projects. Manufactured with premium alloy blanks and undergoing customized thermal hardening treatment , these top hammer rock tools achieve stable surface hardness , strong impact resistance and extended service life in diverse geological environments.
Engineered with a streamlined short taper sleeve structure , our rock drill bits reduce overall tool weight significantly. The optimized structural design simplifies on - site replacement procedures , allowing field workers to complete bit installation and removal in less time. It is important to note that this series is purpose - built for shallow and medium - depth borehole tasks and is not suitable for ultra - deep drilling operations with extreme working pressure.
Size & Configuration Options
We offer highly flexible size and configuration options to match various rock drill equipment and site conditions. The bit diameter covers 30mm to 50mm , supporting common taper gradients including 4°46′ , 6° , 7° , 11° , and 12°. Fully compatible with mainstream Hex22 and Hex25 shank tapered drill rods , these bits fit most standard pneumatic rock drills used in quarrying and underground mining. To support large - scale engineering projects , our factory maintains stable mass production capacity , with a maximum monthly output of 50000 units , ensuring timely bulk order delivery.
Customers can freely select button quantities ranging from 4 to 9 carbide teeth according to rock hardness requirements. Among all configurations , the 7 - button tapered bit stands out for its balanced performance , making it the most widely adopted option for conventional pneumatic drilling and shallow blasting hole construction across global mining sites.
Carbide Button Types & Applications
Our popular 11° short - body tapered drill bits support interchangeable carbide button types , enabling targeted adaptation to different rock formations and maximizing drilling efficiency. Each tooth profile is professionally optimized for specific geological conditions :
Spherical Carbide Buttons : Engineered for tough working scenarios with hard and highly abrasive rock layers such as granite and quartzite. This tooth type features exceptional wear resistance and anti - crack performance, effectively avoiding tooth peeling and rock impact damage during long - duration drilling.
Parabolic / Semi - Ballistic Buttons (Type D) : The universal standard solution for most mining operations. Ideal for medium - hard strata including limestone and compacted sandstone , it balances steady drilling speed and durable abrasion resistance , delivering consistent comprehensive performance for daily mining drilling tasks.
Bullet Ballistic Buttons : Boasts superior rock-breaking penetration and faster drilling progress. Perfect for medium - hard rock and fractured jointed rock formations. Most bullet - tooth drill bits are equipped with central positioning teeth to enhance drilling stability and straightness.
Conical Pointed Buttons (Type Z) : Designed exclusively for low - strength working conditions , including soft rock , weathered bedrock and fragile shale layers. This tooth structure is not impact - resistant enough for hard rock environments and is prone to tip breakage , so it is not recommended for high - hardness drilling scenarios.
The 11° taper model remains our best - selling specification for global mining and infrastructure clients. Its optimized taper angle provides ideal rod - bit clamping tension , avoiding excessive locking or loose connection issues. The moderate assembly difficulty greatly improves field construction efficiency and reduces tool maintenance time.
In practical field comparison , tapered button bits outperform traditional flat - head and cross - head rock drill bits in overall technical maturity and working stability. The upgraded manufacturing process extends single-use drilling mileage , reduces frequent tool replacement , and greatly improves overall construction efficiency. This substantial performance advantage makes carbide button rock bits the preferred drilling tool for professional contractors worldwide.
Application Scenarios
Our full - series tapered drilling tool sets mainly consist of tapered button bits and matched tapered drill rods , covering two mainstream bit types : button tooth and flat tooth styles. These industrial-grade drilling consumables are perfectly compatible with standard rock drilling rigs , water well drilling equipment and oilfield auxiliary machinery.
Widely deployed in quarry rock drilling , mine blasting hole punching, coal mine roadway development , highway foundation construction , dam infrastructure engineering and various civil blasting projects , these versatile rock tools provide cost - effective and high - reliability drilling solutions for diverse geotechnical construction operations.
HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...
