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Steadfast Engineering Solutions

Polgain facilitates the production behind global industries as a trusted leader in bespoke cam and camshaft manufacturing. With over a century of expertise, we specialise in tailored solutions that power machinery with precision and reliability. From CNC batch production and specialised coatings to heat treatments, material inspection, and general engineering services, we provide the essential components and expert support needed to keep business moving.


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Cam specialists

The only independent cam manufacturer in the UK

Modern Equipment

Traditional standards, powering modern techniques

Skilled Operators

Driven by decades of specialist talent

ISO9001:2015 Accredited

Proud to deliver impeccable quality as standard


Originally Zephyr Cams

Polgain began as Zephyr Cams, established during World War I, and remains proud of its historic roots. We played a pivotal role in manufacturing cams for the Zephyr motor car – predating the Ford Zephyr – and even crafted pistons for the first transatlantic flight, showcasing our legacy of engineering excellence.

Supported by Saint Vincent Holdings Group

Through the years, Polgain has remained in the skilled hands of local engineers, dedicated to delivering quality worthy of their worldwide reputation. Now as part of the Saint Vincent Holdings group, we benefit from the stability and support of a larger network, enabling us to weather industry challenges and stand strong as a reliable partner to our customers.

Precision that powers your productivity

From motorsports and power generation to bottling and pharmaceuticals, we thrive on solving challenges across diverse industries. Got a niche or complex project? We’re ready to go.

Collaborating with global industry players

We work with partners all over the world, supplying and manufacturing cams and machine parts for the likes of Bentley, MAN and Crown.

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Finished camshaft
Polgain employee working on machine

Our History

The early years of Zephyr

The Zephyr story began in Lowestoft around 1910-1912, with the engineering partnership of James, Talbot & Davison, based at Waveney Works on Freemantle Road. The business is understood to have initially been involved in fishing tackle before developing into motor engineering.

During the early years of the twentieth century, the emerging motor industry created a growing demand for specialist engineering components. Zephyr developed a reputation for the manufacture of high-quality pistons, particularly for competition and high-performance engines.

The quality of these pistons soon became recognised in competition. Zephyr pistons were fitted to engines used in racing and record attempts, including A. J. Hancock’s 1914 Vauxhall Prince Henry. Their success helped establish Zephyr as a respected name in British performance engineering.

Wartime production

Like many British engineering companies, Zephyr’s activities changed during the First World War, when the Lowestoft works became involved in munitions production.

Automobile manufacturer

After the war, the company even ventured into automobile manufacture, developing the Zephyr Light Car. The car featured a 1,944 cc four-cylinder overhead-valve engine, four-speed gearbox and shaft drive, and was exhibited at the 1919 Olympia Motor Show.

Although the car itself was produced only in very small numbers, the Zephyr engineering business continued to develop. The company concentrated increasingly on pistons and associated components and became an important supplier to the motor industry.

The development of Zephyr Cams

The later history of Zephyr includes an important connection with Supersign Ltd, a Lowestoft company originally involved in manufacturing road signs.

According to recollections from former Zephyr Cams employees, Supersign used specialist Italian machinery incorporating cams. The cost and difficulty of obtaining replacement components led the company to develop its own cam-manufacturing capability.

Cam manufacture eventually became established as Zephyr Cams, creating a business dedicated to the manufacture of cams and precision-engineered components.

Operating from Tower Road in Lowestoft, Zephyr Cams developed specialist machinery, tooling and manufacturing expertise that would become the foundation for the next chapter of the company’s history.

From Zephyr Cams to Polgain

In 2002, Polgain Ltd was established following the acquisition of the Zephyr Cams operation.

Today, Polgain continues to manufacture specialist cams and camshafts for a wide range of applications, including power generation, motorsport, automotive and industrial engines.
Modern CNC machining, precision grinding and reverse-engineering techniques have transformed the way these components are produced, but the fundamental principles remain unchanged.

Engineering expertise

From the workshops of early twentieth-century Lowestoft, through the pioneering work of Zephyr Pistons and Zephyr Cams, to the modern manufacturing facilities of Polgain, the company continues a remarkable tradition of specialist British engineering.

More than a century after the Zephyr name first appeared, its legacy lives on in every camshaft manufactured by Polgain.

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