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{"title":"11 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg","imgUrl":"https:\/\/img.chinax.com\/nimg\/92\/86\/7a4236424709f0418222881e7ae3-200x200-1\/11_degree_tapered_rock_drill_bit_h22_26_42mm_carbide_button_bit_for_yt28_air_leg.jpg","attrs":{"Bit Type":"Carbide Button Bit","Taper Degree":"11 degree","Model Number":"11 Degree Taper","Place of Origin":"Hunan China"}}
{"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":"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_handheld_mining_tunneling_anchor_bolting.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"}}
The 11-degree tapered button bit is a rock drilling tool engineered for medium-hard rock and medium-depth holes. Compared with a 7-degree taper, its steeper profile provides stronger self-locking on the drill rod, reducing the risk of bit drop while still allowing efficient penetration and reliable bit changes. It pairs with H22 hexagonal tapered drill rods on YT23, YT24 and YT28 air leg rock drills, in a full diameter range of 26-42mm.
Key Features & Advantages
Stronger self-locking: the 11-degree taper grips the rod more firmly than a 7-degree taper, reducing bit drop during medium-deep drilling.
Balanced penetration: steady feed and consistent water supply deliver reliable drilling speed in medium-hard formations.
Easier removal than 12-degree: releases with a moderate tap, saving time compared with steep 12-degree bits.
Even taper wear: uniform stress distribution slows socket and rod wear for longer service life.
Universal compatibility: fits standard YT23/YT24/YT28 air leg rock drills with H22 taper rods, covering 26-42mm sizes.
Applications
Medium-hard rock mining and tunneling
Quarrying in medium-hard formations
Anchor bolt and slope support drilling
Medium-depth hole drilling
Technical Specifications
Taper Degree
11°
Diameter Range
26-42mm
Rod Type
H22 hexagonal tapered drill rod
Compatible Drills
YT23 / YT24 / YT28 air leg rock drill
Recommended Depth
2.5-5m
Rock Formation
Medium-hard rock, granite, marble
Bit Type
Carbide button bit
Operating Notes
Match only with 11-degree taper drill steel; clean the taper contact surfaces before assembly.
Keep steady feed pressure and continuous water supply to clear cuttings.
For hard granite and deep holes over 5m, a 12-degree taper is recommended.
Reverse the rod and tap moderately to remove the bit; avoid heavy hammering.
FAQ
What is the difference between 7-degree and 11-degree taper? The 11-degree taper locks more firmly for medium-hard rock and medium-depth holes, while the 7-degree taper is easier to change and suits soft to medium rock.
Which drill rods does it fit? H22 hexagonal tapered rods with a matching 11-degree taper.
What is the minimum order quantity? Please contact us with your required diameter and quantity; we support small trial orders and bulk supply.
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...