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Shock Subs // Bit Size 3 1/4" Material Carbide rotor Motor Size 14"

Supplier OSC Dynomax Ltd

Bit Size


Motor Size

Product Technical Configuration

Material Carbide rotor
Bit Size 3 1/4"
Motor Size 14"

Product country of origin: Canada

Location of the product: Canada

Available:  For Sale

Supplier reference: ASSY-ST-1400

Original manufacturer: OSC Dynomax Ltd

Finalized quotes will be sent directly to the supplier


DYNOMAX Drilling Tools’ Shock Sub is designed to absorb and dampen the variable axial dynamic loads produced by the drill bit during “normal” drilling operations, by interrupting the harmonic cycle created at the bit.

Bi-directional spring action allows the shock sub to automatically adjust to a wide range of weight on bit values which can be further customized using a low compression spring stack.

As axial loads are produced, energy is absorbed through the use of the Belleville spring assembly, while force dampening is accomplished by mechanical friction.


Dynomax can offer shock subs for higher temperature applications with specially designed seals for temperatures above 350°F (175°C).


Dynomax Drilling Tools Inc., Leduc, Alberta, Canada

10 Years of Providing Quality and Innovation to Drilling Operations Globally.

DYNOMAX supplies leading performance drilling products engineered for the oil and gas industry. We provide high value products and services for vertical, directional and horizontal drilling operations worldwide.

Our product lines include Mud Motors, Shock Tools, Drilling Jars, Slide Reamers and Regulator Subs, which bear our industry-leading technologies backed by experience in the field—tools that are built for extended uses.  
We’ve maintained a reliable reputation for delivering tough tools with versatility, and service that’s well above standard. Our QA/QC Program ensures that every tool that makes it to the field meets or exceeds expectations on the field.

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Related Product Variants

Product Name Material Bit Size Motor Size
Shock Subs Carbide rotor 1 1/4" 3 3/4"
Shock Subs Carbide rotor 1 3/4" 5"
Shock Subs Carbide rotor 1 3/4" 4 3/4"
Shock Subs Carbide rotor 1" 3 1/8"
Shock Subs Carbide rotor 2 1/2" 6 1/2"
Shock Subs Carbide rotor 2 1/2" 6 3/4"
Shock Subs Carbide rotor 2 4/5" 8"
Shock Subs Carbide rotor 3 1/2" 11 1/4"
Shock Subs Carbide rotor 3 1/4" 14"
Shock Subs Carbide rotor 3 1/4" 12"
Shock Subs Carbide rotor 3" 9 1/2"
Shock Subs Carbide rotor 7/8" 2 7/8"

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