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Home / Products / Reaming Bit /

R28 Thread Reaming Bit Split Type Rock Drill Bit For Center Hole Reaming

R28 Thread Reaming Bit Split Type Rock Drill Bit For Center Hole Reaming

R28 Thread Reaming Bit Split Type Rock Drill Bit For Center Hole Reaming

Brand Name: HLDRILL
MOQ: 10PCS
Price: Please contact us
Payment Terms: T/T
Supply Ability: 2000PCS Per Month
Detail Information
Product Description
Detail Information
Place of Origin:
CHINA
Product Name:
R28 Threaded Reaming Rock Drill Bit
Product Specifications:
R28 Threaded Connection
Product Type:
Center Hole Reaming Drill Bit
Tilt Structure:
Reaming Cutting Structure
Tilt Material:
High Wear-Resistant Carbide
Application Scenarios:
Center Hole Reaming, Hard Rock Drilling
Performance Characteristics:
Precise Reaming, Impact Resistance, High Wear Resistance
Product Advantages:
High Concentricity, Stable Drilling, Long Service Life
Packaging Details:
Wooden Box
Highlight:

Reaming Rock Drill Bit

,

R28 Thread Reaming Bit

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Reaming Bit Split Type

Product Description
R28 Thread Reaming Rock Drill Bit for Center Hole Reaming
Reaming rock drill bits, also known as pilot reamer bits, are hole openers that drill a pilot hole to a certain depth and then ream the hole to a larger diameter. Primarily used for center hole reaming in long hole drilling, these bits come in threaded varieties including integral reaming bits (dome type, pilot type) and split-type reaming bits.
Product Specifications
Parameter Value
Thread R28
Diameter 102mm
No.×Buttons Dia 1×10mm, 14×12mm
Skirt Design Normal
Weight 3.1kg
Carbide Design Spherical
Face Design Dome
Carbide Brand and Grade ZCC/YK05
Steel Grade 45CrNiMoVA
R28 Thread Reaming Bit Split Type Rock Drill Bit For Center Hole Reaming 0
Functional Overview
In top hammer drilling, dome reaming bits and pilot reaming bits serve specific functions in the drilling process:
Pilot Drill Bit
  • Function: In down-the-hole hammer drilling, the pilot drill bit drills the initial pilot hole with a smaller cutting diameter, penetrating rock and initiating the drilling process
  • Application: Used at the beginning of drilling operations to create straight, precisely sized pilot holes that guide subsequent tools and maintain hole verticality
Ball-Shaped Reaming Bit
  • Function: Features a larger cutting diameter to enlarge the pilot hole to required final diameter, removing additional rock material
  • Application: Used in later drilling stages to achieve desired hole diameter, facilitating installation of larger equipment or casing
This sequential use of different drill bits ensures drilling accuracy, efficiency, and operational control in down-the-hole hammer drilling applications.
Tags: 

Reamer Bit  

Reaming Drill Bit  

Reaming Tool Bit

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