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Tapered drill rod

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Tapered drill rod

Different rock formations and rock drills require different taper angles. When drilling with high impact hydraulic rock drills in medium-hard to hard and abrasive rock formations, a wide taper angle is normally used. Taper angles of 11 and 12-degrees are normally used on modern drill rigs. For low impact rock drills and softer rock formations, a narrow taper angle of seven degrees is used. A 7-degree angle can also be used if bit spinning is a problem when using 11 and 12-degree equipment. In addition, a 4,46 degree angle is ideal for soft rock when you're using pneumatic or hydraulic drill rigs - to prevent bits from spinning or becoming detached.


Part number 

Taper Angle 

Shank 

Length 

Weight



mm

mm

kg

BT220600-6

6°(7° 11° 12°)

Hex 22 x 108

600

2.2

BT220800-6

6°(7° 11° 12°)

Hex 22 x 108

800

2.8

BT221000-6

6°(7° 11° 12°)

Hex 22 x 108

1000

3.4

BT221200-6

6°(7° 11° 12°)

Hex 22 x 108

1200

4

BT221400-6

6°(7° 11° 12°)

Hex 22 x 108

1400

4.5

BT221600-6

6°(7° 11° 12°)

Hex 22 x 108

1600

5.1

BT221800-6

6°(7° 11° 12°)

Hex 22 x 108

1800

5.7

BT222000-6

6°(7° 11° 12°)

Hex 22 x 108

2000

6.5

BT222200-6

6°(7° 11° 12°)

Hex 22 x 108

2200

7.2

BT222400-6

6°(7° 11° 12°)

Hex 22 x 108

2400

7.8

BT222600-6

6°(7° 11° 12°)

Hex 22 x 108

2600

8.3

BT222800-6

6°(7° 11° 12°)

Hex 22 x 108

2800

8.9

BT223000-6

6°(7° 11° 12°)

Hex 22 x 108

3000

9.5

BT223600-6

6°(7° 11° 12°)

Hex 22 x 108

3600

11.2

BT224000-6

6°(7° 11° 12°)

Hex 22 x 108

4000

12.7

BT224800-6

6°(7° 11° 12°)

Hex 22 x 108

4800

15.2

BT225600-6

6°(7° 11° 12°)

Hex 22 x 108

5600

18.4

BT226400-6

6°(7° 11° 12°)

Hex 22 x 108

6400

20

BT227200-6

6°(7° 11° 12°)

Hex 22 x 108

7200

22

BT228000-6

6°(7° 11° 12°)

Hex 22 x 108

8000

24.5

Part number:BT220600-6 is BT(Chiesl bit)22(Shank size)0600(Length)-6(Taper angle)



Bestlink Factory

Xiamen Bestlink Factory Co., Ltd  is  committed  to  provide  the  best  drilling  and  cutting machine,  tools and accessories products in marble and granite stone quarrying,  as well as in civil engineering application, especial demolition project. it is now a leading manufacturer of cutting and drilling equipment for the extraction of marble, granite  and ornamental stones in china.  

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