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R32-64mm Retract Rock Drilling Bit

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R32-64mm Retract Rock Drilling Bit

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Brand Name : MIROC

Model Number : R32-64mm

Certification : ISO

Place of Origin : CHINA

MOQ : 1

Supply Ability : 3000

Delivery Time : 20-30

Type : Retrac Button Bit

Material : Tungsten Carbide

Body type : Retrac

Color : Customized

Advantage : High-efficiency

Use : Quarry,construction,blasting,open pit and underground

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R32-64mm Retract Rock Drilling Bit
Product Attributes
Type Retrac Button Bit
Material Tungsten Carbide
Body type Retrac
Color Customized
Advantage High-efficiency
Use Quarry, construction, blasting, open pit and underground
Product Overview

A retractable button bit designed for small-to-medium diameter drilling (32-64mm), combining a retraction mechanism with button-shaped tungsten carbide inserts. Ideal for applications requiring frequent bit withdrawal in complex geological conditions.

Key Features
  • Retractable Design: Enables safe withdrawal during drilling to prevent jamming in fractured/abrasive formations.
  • R32 Thread Connection: Standard R32 threaded shank compatible with most drill rigs (e.g., DTH, top hammer).
  • Button Inserts: Spherical/wedge-shaped carbide tips for high wear resistance (suitable for medium-to-extremely hard rock).
  • Optimized Flushing: Internal fluid channels ensure efficient cuttings removal and bit cooling.
Applications
  • Geotechnical Exploration: Core sampling, blast hole drilling.
  • Mining: Small-diameter blast holes, anchor bolt holes.
  • Civil Engineering: Tunnel support drilling, micropile foundations.
  • Challenging Formations: Unstable layers (e.g., fault zones, loose gravel).
Technical Specifications
Parameter Range Notes
Diameter Range 32-64mm (incremental sizes) Custom sizes available.
Rock Hardness 80-250 MPa UCS Granite, quartzite, etc.
Recommended Load 5-15 kN Adjust per rig capacity.
Rotation Speed 80-150 RPM Lower for hard rock.
Flushing Pressure ≥1.5 MPa Minimize bit balling.
Product Variants
Part Number Product Code and Description Bit Diameter (mm) Bit Diameter (inch) Front Buttons (No. x mm) Gauge Buttons (No. x mm) Angle Front Flushing Holes Side Flushing Holes Weight (kg)
4148300527 R945-R32-B, R32 Retrac Button Bit, Ballistic Buttons 45 1 7/9 3x8 6x9 40° 3 - 1.1
4148300528 R948-R32-B, R32 Retrac Button Bit, Ballistic Buttons 48 1 8/9 3x9 6x10 30° 3 - 1.2
4148300529 R951-R32-B, R32 Retrac Button Bit, Ballistic Buttons 51 2 3x9 6x10 30° 3 - 1.4
4148300530 R1064-R32-B, R32 Retrac Button Bit, Ballistic Buttons 64 2 1/2 3x10, 1x10 6x11 35° 3 - 2.2
4148300531 R1264-R32-B, R32 Retrac Button Bit, Ballistic Buttons 64 2 1/2 4x10 8x10 40° 2 - 2.2
4148300532 R1376-R32-B, R32 Retrac Button Bit, Ballistic Buttons 76 3 4x11, 1x11 8x11 35° 4 1 3.5
Product Images
R32-64mm Retract Rock Drilling Bit R32-64mm Retract Rock Drilling Bit R32-64mm Retract Rock Drilling Bit R32-64mm Retract Rock Drilling Bit

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