Tapered drill rods

With one side connected to rock drill and the other side connected with taper drill bit, the taper drill rod transmits power from rock drill to bit, drilling work is thus performed. Tapered drill rod is a further development of the integral drill rods. It usually has a forged collar to maintain the proper shank striking face position in the rock drill.

  • Shank sizes: H22*108mm/ H25*108mm/H25*159mm.
  • Taper degrees: 7°, 11°, 12°.
  • Length: 400 – 8000mm
  • Raw material: 55SiMnMo,40SiMnCrNiMo,23CrNi3Mo
  • Production processes: involving multiple processes, such as steel rolling, forging, normalizing,quenching and tempering, etc.
  • Over 15 years experience in rock drilling TooLS industry.
  • Shandike only uses high-quality raw materials.
  • We set up our products standard matched with world leading brands.
  • Advanced processing equipment extends the service life of products.

Introduction to tapered drill rods

Tapered drill rod effective lengths are measured from the collar to the bit end, which are usually from 0.6meter to 3.6 meters.

Parameters

Shank sizes: Hex.19mm, Hex. 22mm, Hex.25mm
Taper degrees: 7°, 11°, 12°.
Length: 400 – 8000mm.

Specifications:

Drilling duties in tunneling, construction, mining, quarrying, etc.

22mm(7/8″)Tapered drill rodsLTaper DegreeWeight (kg)
mmfoot/inch
 H22×108 Shank 

5001′ 5/8″7o1.5
8002′7 1/2″2.4
10003′3 3/8″3
12003′11 1/4″3.6
15004′ 11″4.5
18005′10 7/8″5.5
20006′6 3/4″6.1
22007′2 5/8″6.7
25008′2 3/8″7.6
30009′10 1/8″9.1
350011′5 3/4″10.6
400013′1 1/2″12.1
450014′9 1/8″13.6
500016′4 5/8″15.1
600019′8 1/4″18.2
700022′11 5/8″21.2
800026′ 3″24.2
 H22×108 Shank

 
8002′7 1/2″12o2.4
12003′11 1/4″3.6
16005′ 3″4.9
22007′2 5/8″6.7
24007′10 1/2″7.3
320010′ 6″9.7
 H22×108 Shank

18005′10 7/8″7o5.5
20006′6 3/4″6.1
25008′2 3/8″7.6
30009′10 1/8″9.1
350011′5 3/4″10.6
400013′1 1/2″12.1
500016′4 5/8″15.1

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