Mining Equipment

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Product Details
Taper Drill Rod 
Color: Orange, Red, Black, Yellow, Gold
Brand: SANSUNG
Origine: China
Thread Model: H22x108
Packaging: Ply-wood box
Delivery Time: 20-30days
Sample Order: Yes
OEM Service: Yes
Model: H22x108,H25x159
Details

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 7 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.


tapered connection rock drill tool.jpg


Tapered Drill RodL
mmft

 taper rod (1).jpg

shank: Hex.22mm (7/8")*108mm or Hex.25mm (1")*108mm

Taper degree: 7°, 11° and 12°

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