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DTH and OTH Shock Absorbers

Shock subs are installed in the drill string to absorb and dampen the impact load on the drill head. Shock subs have the greatest benefit in hard rock and broken formations.

Shock Absorber

Shock Absorbers Complete - Down the Hole

Size
Description
3" DTH
2 3/8" Reg Pin Top - 2 3/8" Reg Box Bottom
4" DTH
2 3/8" Reg Pin Top - 2 3/8" Reg Box Bottom
5" DTH
3 1/2" Reg Pin Top - 3 1/2" Reg Box Bottom
6" DTH
3 1/2" Reg Pin Top - 3 1/2" Reg Box Bottom
8" DTH
4 1/2" Reg Pin Top - 4 1/2" Reg Box Bottom
10" DTH
6 5/8" Reg Pin Top - 6 5/8" Reg Box Bottom
10" DTH
8 5/8" Reg Pin Top - 8 5/8" Reg Box Bottom
12" DTH
6 5/8" Reg Pin Top - 6 5/8" Reg Box Bottom
12" DTH
8 5/8" Reg Pin Top - 8 5/8" Reg Box Bottom
14" and 18" DTH
Special Order


Shock Absorbers Complete - Out the Hole

Size
Description
4" OTH
Holman Flange Top - Holman Pin Bottom
4" OTH
Holman Flange Top - 2 3/8" Reg Box Bottom
4" OTH
2 3/8" Reg Pin Top - 2 3/8" Reg Box Bottom
5" OTH
Copco DDR42 Flange Top - 2 3/8" Reg Box Bottom
5" OTH
Holman Flange Top - 2 3/8" Reg Box Bottom
5" OTH
2 3/8" Reg Pin Top - 2 3/8" Reg Box Bottom
6" OTH
3 1/2" Reg Pin Top - 3 1/2" Reg Box Bottom
8" OTH
4 1/2" Reg Pin Top - 4 1/2" Reg Box Bottom


Specifications

Size
Weight
Overall
Length
Effective
Length
Outside
Diameter
Standard Thread Connection
3" DTH
25.35 lbs.
17 1/4"
14 1/4"
3"
2 3/8" Regular
4" DTH
35.83 lbs.
18 3/4"
15 3/4"
3.68"
2 3/8" Regular
5" DTH
60.63 lbs.
21 3/8"
17 5/8"
4 1/2"
3 1/2" Regular
6" DTH
91.49 lbs.
23 1/4"
19 1/2"
5 1/4"
3 1/2" Regular
8" DTH
187.39 lbs.
27"
22 3/4"
7"
4 1/2" Regular
10" DTH
332.90 lbs.
30 1/8"
25 1/8"
8.86"
6 5/8" Regular
12" DTH
443.13 lbs.
29 1/2"
24 1/2"
10.15"
6 5/8" Regular

Shock Absorber diagram