Torsion Bars & Anti-Roll Bars | UK Manufacturer

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Leading UK manufacturer of bespoke forged torsion and anti-roll bars, engineered to enhance vehicle stability in demanding applications across locomotive, commercial, defence, and off-highway sectors.

Offering comprehensive UK manufacturing capabilities for heavy-duty vehicle suspension hardware, backed by advanced hot forging, precision bending, CNC machining, torsion testing, and in-house inspection facilities.

We specialise in the precision manufacture of robust, high-integrity torsion bars designed to withstand extreme torsional loads, cyclic stresses, and severe operational environments.
By utilising advanced hot-upset forging, precision bending, and strict heat-treatment processes, we produce components that deliver elite fatigue resistance and structural integrity.

Whether for locomotive bogies, commercial vehicles, defence platforms, or off-highway machinery, we provide a complete, bespoke manufacturing solution tailored to exact engineering specifications.

torsion bars anti-roll bars examples from Brooks Forgings

Comprehensive Manufacturing Processes

From raw material receipt to final packaged delivery, our integrated production facility provides complete control over every stage of the manufacturing lifecycle. This end-to-end capability guarantees strict adherence to engineering tolerances, quality assurance, and project timelines.

raw material sawing and preparation for torsion bar production at Brooks Forgings

Sawing (Raw Material)

Precision cutting facilities ensure accurate blank sizing and preparation from fully certified, high-integrity raw materials.

torsion bars upset forged at Brooks Forgings

Upset Forging

Advanced hot forging cells shape critical components, gathering material to optimise internal grain flow and deliver superior torsional strength.

Bending

Specialist temperature-controlled furnaces and precision tooling shape complex end forms and configurations with minimal surface deformation.

Machining

Comprehensive CNC machining centres deliver precise component shaping, tight dimensional tolerances, and customised features.

Splining

Specialised hobbing and shaping facilities produce high-integrity splines for secure, heavy-duty mechanical engagement.

Heat Treatment

Controlled thermal processing alters material microstructure to achieve the exact hardness, toughness, and mechanical strength required.

Shot Peening

Advanced surface treatment bombards the component with media to induce compressive residual stresses, dramatically enhancing fatigue life under cyclic loads.

torsion bar painting and coating at Brooks Forgings

Painting & Coating

Protective coating applications safeguard components against corrosion and harsh operational environments.

torsion bar pre-setting and testing at Brooks Forgings

Torsion Testing & Pre-Setting

Rigorous operational simulation and pre-setting processes verify performance, durability, and elastic limits under strict cyclic conditions. Up to 75,000Nm and 80mm diameter.

Marking

Clear, permanent component identification ensures full traceability, batch tracking, and specification compliance.

Packaging

Secure, bespoke packaging solutions protect finished assemblies during transit, ensuring they arrive on-site ready for immediate installation or long term storage.

Our Target Industry Applications

Our British manufactured torsion and anti-roll bars, and forged suspension components, are trusted across the world's most demanding heavy-duty sectors:

torsion spring bars for military tracked vehicles FV432

Defence Platforms

Rugged, high-integrity torsion bar springs engineered to endure extreme terrain and shock loading on tracked military vehicles.

anti roll bars for heavy industrial mining quarry vehicles

Commercial & Off-Highway

Heavy-duty weight-bearing suspension components for construction vehicles, agricultural machinery, and heavy goods transport.

anti roll torsion bars for trams locomotives trains

Locomotive & Rail

Vital bogie suspension components built for high-speed mass transit and heavy freight locomotives.

Torsion Testing and Pre-Setting Machine

torsion testing pre-setting scragging machine 75000Kn

Our state-of-the-art high capacity 75,000Nm torsion testing and pre-setting machine is the only one in the UK and Western Europe.

Brooks Forgings has made a considerable investment to restore a vital sovereign manufacturing capability to the UK.

Our state-of-the-art, advanced pre-stressing and scragging machine allows us to offer a 100% onshore, integrated production and testing route for high-stress components up to 3 meters in length and 80mm diameter.

Torsion Bar Pre-setting (Scragging) Capability

Pre-setting, professionally known as scragging, is a highly technical process critical for components subjected to extreme operational fatigue, such as tracked vehicle suspensions. The machine twists the steel past its elastic limit. This process traps permanent residual stress inside the metal, preventing immediate sagging and catastrophic failure in the field.