R32-64mm Retract Rock Drilling Bit

Brand Name:MIROC
Certification:ISO
Model Number:R32-64mm
Minimum Order Quantity:1
Delivery Time:20-30
Place of Origin:CHINA
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Location: Beijing Beijing China
Address: Room9-616, No. 10 Zhenxing Road (MDW Plaza), Changping District, 102200 Beijing, China
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Product Details

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
FEATURE:DESCRIPTION
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.


Part Number

Product Code and Brief 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


China R32-64mm Retract Rock Drilling Bit supplier

R32-64mm Retract Rock Drilling Bit

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