FLOATING CUSHION SUBS

Foremost floating cushion subs (FCS) are utilized in both slanted and vertical drilling operations to reduce vibration and wear of the drill string and drill rig components. Foremost manufactures several FCS models for mining, construction, water well and oilfield applications. The sliding spindle of the cushion sub permits the threads of the mating drill string components to float together or apart during rotation without any axial movement of the rotary drive. This decreases the impact on the rotary drive when the two mating threads are joined and decreases the load on the threads of the mating components.

Highlights

The Floating Cushion Sub performs two important functions:

  • It provides a means of making up and breaking out threaded connections without damaging threads.
  • It prolongs bearing and gear life of the rotary top drive.

Foremost floating cushion subs are an economical accessory with the proven ability to help increase tooling life and reduce equipment downtime.

Model-375300 - Mining Equipment floating cushion subs Floating Cushion Subs IMG 4047ee


MODEL 375300/359150

Foremost floating cushion subs (FCS) are utilized in both slant and vertical drilling operations to reduce vibration and wear of the drill string and drill rig components. Foremost manufactures several FCS models for mining, construction, water well and oilfield applications. [Read More…]

MODEL 306130 floating cushion subs Floating Cushion Subs Model 306130

MODEL 306130

The Foremost Floating Cushion Sub is designed to be installed on Rotary Drilling Rigs below the gear box and into the drive spindle by means of a threaded connection. The Cushion Sub will reduce vertical shock transmitted by the bit while drilling using either DTH Hammer or Rotary Drilling methods. [Read More…]

MODEL 306430 floating cushion subs Floating Cushion Subs Model 306430

MODEL 306430

The Foremost Floating Cushion Sub has been designed specifically to fit all mid range and large blast hole rotary drills which are utilized to drill in soft to medium hard rock formations. [Read More…]

model pd6 2 floating cushion subs Floating Cushion Subs PD6 2 Cushion Subs

MODEL PD6-2

The Floating Cushion Sub Model PD6-2 is designed to be installed on rotary drills below the top drive as a shock absorbing, thread saving and maintenance reduction device. It is available with all the popular thread configurations for drill pipe and steel up to and including six (6”) diameters. [Read More…]

model 400127 floating cushion subs Floating Cushion Subs 400127cut 2 thumb


MODEL 400127

The 400127 assembly is applicable to a majority of mining operations that utilize mid range rotary drills such as the Atlas Copco DML, PV235, Caterpillar MD6240, MD6290, Sandvik D50KS and D55SP where production encounters very difficult drilling conditions…[Read More…]

SHOCK SUBS floating cushion subs Floating Cushion Subs FCS 2 thumb

SHOCK SUBS

Threaded directly into the drive spindle of the rotary gear box, the Foremost Cushion Connector will assist in protecting the rotary drive and mast assemblies against both torsional and axial vibrations/shock loading in moderate and extreme drilling conditions. [Read More…]