Acedrills Hex22 Mining Multi Function 7 Degree 4ft 8ft Tapered Mining Drill Rod for Small Hole Drilling

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Acedrills Hex22 Mining Multi Function 7 Degree 4ft 8ft Tapered Mining Drill Rod for Small Hole Drilling

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Product Description

Hex22 Mining Multi Function 7 Degree 4ft 8ft Tapered Mining Drill Rod For Small Hole Drilling

Tapered drill equipment also provides a hexagonal chuck section to provide leverage for the rotation chuck bushing, which usually also has a forged collar to maintain the proper shank striking face position in the rock drill, and match a tapered bit at the socket end. Holes are typically drilled in 0.6 m increments to accommodate the air-leg feed length.

Rod Length

500 ~ 800mm

1500 ~ 4000mm

1830 ~ 6100mm

Shank Length

22 * 108mm

25 * 108mm

25 * 159mm

Taper Degree

7º, 11º, 12º

PRODUCT SPECIFICATION

Shank Style	Rod Length		Taper Degree
Shank Style	mm	foot/inch	Taper Degree
Hex22 × 108mm	500 ~ 8,000	1’ 8” ~ 26’ 2”	7°, 11° and 12°
Hex25 × 108mm	1500 ~ 4,000	4’11” ~ 13’1”	7°
Hex25 × 159mm	1830 ~ 6,100	6’ ~ 20”	7° and 12°

Notes:

The ordinary connection taper degree is 7º, 11º and 12º, other degrees like 4.8º, 6º and 9º are also available upon request;

The ordinary shank is Hex22 × 108mm, Hex25 × 159mm and other styles are also available if upon customers’ request;

The rod length must be specified in order;

In order to adapt to different rock conditions, the drill rod is selected by users.

Different rock formations and rock drills require different taper angles. For this, we can provide taper drill rods with three grades, and lengths available from 600mm (2’) to 11,200mm (36’8”), (measured from the collar to the tapered end).

Taper Rods Grades Recommended Table

Grades	Types	Recommended conditions
Superior	G III, T III, KSW	1) Rock drills impact energy: ≥76J, typically model: YT28 2) Drilling depth: ≥ 2.5 m (8’ 2 27/64”) 3) Rock formations: very hard, hard, medium hard and soft rock Protodyakonov Hardness Scale: f ≥ 15 Uniaxial Compressive Strength: ≥150 Mpa 4) Replacements: G rod, G I rod, ROK
Normal	G I, ROK	1) Rock drills impact energy: < 76 J, typically model: YT24 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) 3) Rock formations: Medium hard and soft rock Protodyakonov Hardness Scale: f < 15 Uniaxial Compressive Strength: < 150 Mpa 4) Replacements: G rod
Economy	G	1) Rock drills impact energy: < 76 J, typically model: YT24 2) Drilling depth: ≤2.5 m (8’ 2 27/64”) 3) Rock formations: Medium hard and soft rock Protodyakonov Hardness Scale: f < 10 Uniaxial Compressive Strength: < 100 Mpa

Production Process of Tapered Mining Drill Rod

Frequently Asked Questions (FAQ)

1. What are the standard taper degrees available for these mining drill rods?

The standard connection taper degrees are 7º, 11º, and 12º. Other custom degrees such as 4.8º, 6º, and 9º can also be manufactured and supplied upon request to meet specific geological conditions.

2. How do I choose the correct grade (Superior, Normal, Economy) for my mining project?

The selection primarily depends on the rock drill impact energy and hardness. Superior grade (G III, T III, KSW) is ideal for YT28 drills with impact energy ≥76J in very hard rock. Normal and Economy grades work best with YT24 drills (<76J energy) in medium to soft rock formations.

3. What shank sizes and configurations can be provided?

Our standard shank configurations include Hex22 × 108mm, Hex25 × 108mm, and Hex25 × 159mm. If your operation requires different styles, custom shanks can be provided upon request.

4. What is the length range of the tapered mining drill rods?

We supply standard rod lengths ranging from 500mm to 8,000mm. Tapered drill rods can also be tailored from 600mm (2') up to 11,200mm (36'8") measured from the collar to the tapered end.

5. Why do these drill rods feature a hexagonal chuck section?

The hexagonal chuck section provides vital leverage for the rotation chuck bushing. Additionally, the forged collar ensures the proper shank striking position is maintained within the rock drill for efficient energy transmission.

6. Can these tapered rods be used in extremely hard rock formations?

Yes, our Superior grade (such as G III, T III, KSW types) is designed for very hard rock formations with a Protodyakonov Hardness Scale of f ≥ 15 and Uniaxial Compressive Strength ≥150 Mpa.

Product Detail

Acedrills Hex22 Mining Multi Function 7 Degree 4ft 8ft Tapered Mining Drill Rod for Small Hole Drilling

Product Description