thread drilling bit from China R32 T38 T45 T51

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Product Description:

 

We are specialized in rock drilling toolssuch as taper button bit, thread button bit, Integral drill rod, DTH bit, DTH hammer, Air leg rock drill, Excavator Mounted rock driling and splitter, expansive mortar.

 

Product:

Thread Button Bits: High quality and several thread with various carbide tips like YK05 are available. All products can be developed upon customers' request. Premium designs and steel and premium tungsten carbide insert grade T6 supplied by Boart Long year, Offers industry-leading strength and penetration rates for more productivity, Excellent straightness and hole clean quality, Get max. drilling performance for rock drills with long life to save up fuel cost rate. 

thread drilling bit from China R32 T38 T45 T51

 

Description of button bit:

Our company supply all kind of button bits with Rope thread

R32-43MM, R32-45MM, R32-51, R32-64, R32-76;

T38-64, T38-76MM, T38-89, T38-102MM;

T45-76MM, T45-89MM, T45-102MM;

T51-89MM, T51-102MM, T51-127MM etc.

all face design, flat face, drop-center face, normal body and retrac body.more

 

Specification of button bit:

Thread

Diameter range

Skirt Design

Face Design

Button Design

R22

35 – 45mm

Normal

Flat Face
Drop Centre

Hemispherical
Ballistic

R25

33 – 57mm

Normal

Flat Face
Drop Centre

Hemispherical
Ballistic

R28

36 – 51mm

Normal

Flat Face
Drop Centre

Hemispherical
Ballistic

R32

41 – 89mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

R35

48 – 51mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

R38

64 – 102mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

T38

57 – 102mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

T45

70 – 127mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

T51

76 – 140mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

T60

89 – 140mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

ST58

89 – 140mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

GT60

93 – 140mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

ST68

102 – 152mm

Normal
Retrac

Flat Face
Drop Centre

Hemispherical
Ballistic
Conical

 

thread drilling bit from China R32 T38 T45 T51

thread drilling bit from China R32 T38 T45 T51

 

Company Profile:

CNBM is the largest state-owned enterprise in China building material & equipment industry. Up until October of 2011, our total assets exceeded RMB 190 billion, with 130,000 employees and over 300 subordinate companies. In the year 2012, we are ranked as No. 365 in World Top 500 Enterprises by Fortune, and No. 2 in global building materials industry, second only to Saint-Gobain.

thread drilling bit from China R32 T38 T45 T51

thread drilling bit from China R32 T38 T45 T51

thread drilling bit from China R32 T38 T45 T51

FAQ:

1. Q: Can I get some samples?

A: We are honored to offer you samples for quality check.

2. Q: Do you have the products in stock?

A : Yes , We have sample for several models now could supply to you.

3. Q: What’s the delivery time?

A: It usually takes about 25 days to produce an order. But the exact delivery time might be different for different orders or at different time.

4. Q: Can I mix different models in one container?

A: Yes, different models can be mixed in one container, but the quantity of each model should not be less than MOQ.

5. Q: How does your factory do regarding quality control?

A: Quality is priority. Rock drilling tools workers always attach great importance to quality control from the every beginning to the end of the production. Every product will be fully assembled and carefully tested before it's packed for shipment.

6. Q: Will you deliver the right goods as ordered? How can I trust you?

A: Yes, we will. Our company is world top 500, that is the biggest supplier and manufacture in China, having a good reputation around the world.

7. Q: What's the payment you accept ?

A: As usual our payment is T/T, other payment can consider.

As the largest manufacturer and exporter of building materials in China, we avail ourselves of this opportunity to approach you for mutual-beneficial cooperation. If you want to know more, pls contact me freely.

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Q:What are the main points of drill grinding?
Make sure that the edge of the blade is symmetrical to the axis and the sides are slowly repaired. When the edge is sharpened and the other side is sharpened, the edge must be in the middle of the axis of the drill bit, and the edges of both sides must be symmetrical. The symmetry of the experienced teacher will look to the light point, slowly grinding. Drill cutting edge angle is 10 DEG -14 DEG, after large angle, the cutting edge is too thin, when drilling vibration badly, orifice in three edge or pentagon, the chip is acicular; small angle, drilling large axial force, easy to cut, the cutting force increases, temperature rise drill, severe fever, or even drilling. For after the angle grinding, the tip of two edged, symmetrical, drilling bit, chip light, no vibration, no enlarged aperture.
Q:Why is the drill angle 118 degrees?
Standard angle has 118, 120, 130, 135, 140, processing material is different, drill top angle is not the same.
Q:Construction drills, woodworking drills, high-speed steel drills, shapes and uses, what's the difference?
High speed steel drills, straight shank twist drills, taper shank drills. Equal shank drill. It doesn't make much difference. That is, the handle is different
Q:How do you drill a drill?
6, after grinding, the drill rotation, simulation, drilling, cutting the status of inspection, to see if there is no wrong place, if there is further grinding;7, grinding the cross edge, that is, symmetrical sharpening drill bit after the blade;The 8 big bits can be sharpened by grinding on the side of the grinding wheel;9, steel bad twist drill, the vertex angle can be properly worn. .
Q:Tap 10 taps, what size drills do we use?
In general, with nominal diameter equal to the diameter of the bottom hole pitch reduction. 10-1.5=8.5, that's 8.5. However, if the quarterly demand is high, follow the formula below:D1=d-5H/8 H=0.866p:D1-- drilling diameterD - thread diameterH - theoretical height of threaded teethP - pitch
Q:The maximum diameter of the hammer is fixed up? How does an electric drill screw in? How big is the drill bit?
If the opening is often marked with the vertical line, then along a circle hole, knocking out the middle can.
Q:1.5 of the stainless steel plate to drill 1.2 holes, the drill has broken a lot of roots, what kind of material with a bit better? How much speed, how much feed?
First of all, drilling stainless steel must use high-performance drills, such as high cobalt, high vanadium or alumina bit material.
Q:What size drills and taps are required for drilling M10's internal threads?
Internal thread drill M10 should choose the drill and tap should take into account the thread pitch. If you are a standard thread M10*1.5, thread holes should be used with 8.5 bit;
Q:I'm going to drill 10.5 of the thread. How many holes do I have to drill before tapping? How big is the tap?
In the national standard, the first series of thread sizes are M10 and M12, so the 10.5 corresponds to the M12 thread. Check the screw pitch, diameter, bottom table, check the corresponding M12 bottom 10.25mm.
Q:Cobalt containing special stainless steel drill bit, 4mm angle, do not move?
The characteristics of stainless steel is high toughness, easy to stick a knife. So the drill hardness is high, surface finish better than ordinary bits, the bit angle large (130--135 degrees). At the same time to the full amount of feed and cooling. More than 0.15mm as much as possible without cutting in cold hardened layer. The cutting speed is as low as possible to reduce the cutting temperature. The cutting fluid is made of concentrated emulsions. Commonly used stainless steel drills are: high cobalt bit (M35 bit, M42 bit), in which the M42 bit is the most cost-effective, and carbide drills are also available.

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