"We can now work unhindered on the oil rig, the process has become even more efficient thanks to the design and to date no similar problems have occurred."

Project Overview

Drilling at sea is extreme enough but when drill bits hit particularly hard rock they can break, leading to a lengthy and costly process of replacement.

We were asked to develop a special tool that would reduce the load when the drill bit came into contact with hard rocks

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Key Highlights

Material Engineering

Problem Solving

High-QUality ENgineering


Design Criteria

What was the brief?
To develop a number of powerful heavy duty compression springs that overcame the drilling equipment’s extreme loading, whilst achieving optimum performance levels despite the applications extraordinary high temperatures.
What makes the project special?
When offshore drilling, the mechanical process of drilling beneath the seabed achieves exceptionally high temperatures as the drill bores down through rock formations. The extreme heat effects the properties of the compression spring and so we were tasked and delivered on the additional challenge of developing a spring material that could withstand the extreme temperature.
What did Lesjöfors Heavy Springs do?
Our material scientists are the industry experts in their field and working with our design engineers, identified the right material to achieve the success needed in the strict parameters given.  As a market leading heavy duty spring manufacturer, it is our responsibility to be able to access the broadest range of materials for the application required.  This is one of the reasons why we hold the largest stock of chrome silicon in the world.
What challenges did Lesjöfors Heavy Springs overcome?
Our ambition has always been to find the most efficient solution possible - both for us and our customers. It is essential that our solutions deliver the highest quality engineering with the right product for the right function at the right price and are delivered on time. The extremities of this project challenged our goals but we overcame them.


Large springs, using a wide wire diameter commonly seen across our oil and gas, mining and rail customers require a hot winding process as the extreme heat allows up to 65mm wire diameters to be coiled.

The process of heating up wire to approximately 900 degrees Celsius, quenching in oil and tempered to complete the heat treatment, allows the spring material to be coiled to the specifications required - more often than not for extreme environments for heavy industry applications.
Learn more about our manufacturing proccess


Due to the nature of the customers enquiry, a dedicated team from material scientists to geoscientists to engineers partnered together to deliver excellence and precision manufacturing.
Learn more about our Processes

Explore more case studies

Heavy Springs in Gymnastics Equipment

Lesjöfors engineered a series of heavy duty springs to further enhance the performance gained by athletes using sprung floors.
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Heavy Duty Springs for the Öresund Bridge

Overcoming the vibrations on the longest combined road and rail bridge in Europe required our heavy duty spring engineering and manufacturing expertise.
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Bespoke Spring Design picks up Truck Market

Approached by a leading heavy-duty automotive supplier, we designed a nest of springs that specifically solved a repetitive weight issue, extensively expanding the prior limitations and reducing the subsequent suspension spring damage to heavily loaded pick-ups, as well as enhancing cost efficiencies.  
Full Case Study

Find out more about the industries we work with:

Our compression, torsion and tension spring components perform numerous functions across a host of applications in a variety of environments and sectors across the world. Discover some of the industries building the world’s infrastructure, one spring at a time.

We are world-leading heavy duty spring manufacturers, delivering the greatest expertise in compression, torsion and tension spring manufacturing.

Delivering impact to every industry, we guarantee spring solutions that will optimise your performance and success.

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