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Brighttop Global Co., Ltd

  • China,Changsha ,Hunan
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China 7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg
China 7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg

  1. China 7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg
  2. China 7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg
  3. China 7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg

7 Degree Tapered Rock Drill Bit H22 26-42mm Carbide Button Bit for YT28 Air Leg

  1. MOQ: 10 Pieces
  2. Price: USD 5-15 / Piece
  3. Get Latest Price
Bit Type Carbide Button Bit
Payment Terms T/T,L/C,Western Union
Supply Ability 50000 Pieces per Month
Taper Degree 7 degree (7-11 degree composite available)
Diameter Range 26-42mm
Recommended Depth 0.8-2.5m
Compatible Drills YT23 / YT24 / YT28 Air Leg Rock Drill
Packaging Details Standard export wooden case or carton with foam protection
Rock Formation Soft to medium rock, weathered rock, shale, limestone
Rod Type H22 Hexagonal Taper Rod
Delivery Time 7-15 working days after order confirmation
Model Number
Place of Origin Hunan China
Brand Name Custom
Certification

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  1. Product Details
  2. Company Details

Product Specification

Bit Type Carbide Button Bit Payment Terms T/T,L/C,Western Union
Supply Ability 50000 Pieces per Month Taper Degree 7 degree (7-11 degree composite available)
Diameter Range 26-42mm Recommended Depth 0.8-2.5m
Compatible Drills YT23 / YT24 / YT28 Air Leg Rock Drill Packaging Details Standard export wooden case or carton with foam protection
Rock Formation Soft to medium rock, weathered rock, shale, limestone Rod Type H22 Hexagonal Taper Rod
Delivery Time 7-15 working days after order confirmation Model Number
Place of Origin Hunan China Brand Name Custom
Certification
High Light 7 Degree Tapered Button Bit ,H22 Carbide Rock Drill Bit ,Mining Quarrying Tunneling Drilling Tool

Product Overview

The 7-degree tapered button bit is a rock drilling tool designed to pair with H22 hexagonal tapered drill rods on YT23, YT24 and YT28 air leg rock drills. Its shallow 7-degree taper profile locks the bit onto the rod through impact self-tightening, allowing quick bit changes and low drilling resistance. Available in a full diameter range of 26-42mm, it is widely used for anchor bolt drilling, quarrying and shallow-hole drilling in soft to medium rock formations.

Key Features & Advantages

  • Quick & easy bit removal: the shallow taper needs only a gentle tap to release, reducing labor and downtime during frequent bit replacement.
  • Lower drilling resistance: a smaller taper contact area lowers feed pressure and raises penetration speed, roughly 10-15% faster than 11-degree taper bits in the same rock.
  • Less taper wear: even stress distribution on the shallow taper surface slows wear on both the bit socket and the drill rod, extending rod service life by about 20%.
  • Better hole straightness: reduced tail resistance keeps the bit on track in fractured or weathered rock, producing cleaner holes with less deviation.
  • Universal compatibility: fits the standard YT23/YT24/YT28 air leg rock drills with H22 taper rods, covering 26-42mm bit sizes for one-stop stocking.

Applications

  • Anchor bolt and slope support drilling
  • Quarrying and dimension stone extraction
  • Mining shallow-hole drilling in soft to medium rock
  • Road slope, tunnel and water-conservancy anchor drilling

Technical Specifications

Taper Degree7° (7-11° composite also available)
Diameter Range26-42mm
Rod TypeH22 hexagonal tapered drill rod
Compatible DrillsYT23 / YT24 / YT28 air leg rock drill
Recommended Depth0.8-2.5m
Rock FormationSoft to medium rock, weathered rock, shale, limestone
Bit TypeCarbide button bit

Operating Notes

  • Match only with 7-degree (or 7-11-degree) taper drill steel; clean the taper contact surfaces before assembly.
  • Use light impact and low feed pressure at hole opening to avoid carbide chipping.
  • Best for shallow drilling within 2.5m; for hard rock and deep holes, an 11-degree or 12-degree taper is recommended.
  • Reverse the rod and tap gently to remove the bit; avoid heavy hammering.

FAQ

What rock types suit a 7-degree tapered button bit? Soft to medium formations such as shale, limestone, weathered and fractured rock. Hard granite and deep holes over 2.5m are better served by 11-degree or 12-degree taper bits.

Which drill rods does it fit? H22 hexagonal tapered rods with a matching 7-degree (or 7-11-degree composite) taper.

What is the minimum order quantity? Please contact us with your required diameter and quantity; we support both 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...

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Get in touch with us

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  • Brighttop Global Co., Ltd
  • Post Code 410007 BLK 1st Number 288 Wangjiachong Road Yuhua District, Changsha City,Hunan Province,China
  • https://www.expansionmortar.com/

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