About us

Company Profile

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Who We Are

SSS Gears is a specialist engineering company based in Sunbury-on-Thames in the UK. We work closely with SSS Clutch Inc, our sister company in Delaware, USA and Paddock Gear Engineering, our manufacturing subsidiary in Tamworth, UK. The company is privately owned and the majority shareholder is the Harold Sinclair Trust, which operates for the benefit of the employees. As a result of the Trust, SSS takes a long-term strategic view on the company performance and direction and is proud of its independence. SSS continues to invest heavily to maintain and expand its worldclass facilities and manufacturing capacity.

Our People

SSS is an equal opportunities employer. We are proud of our excellent staff retention, with many long service employees. We also invest in our future by training apprentices and placement students who are interested to learn more about the company. Read more about Employment.

What We Do

SSS designs, manufactures and supplies many variants of the SSS Clutch, a unique freewheel suitable for high powers and speeds in demanding applications. Since the company was founded in 1950, we have expanded the many applications where the SSS Clutch is used, strengthening it's 'fit and forget' reputation. We are the global leader in what we do and will maintain this focus and specialism. Read more about our History.


The Product

The SSS Clutch is an automatic overrunning clutch that connects rotating shafts when the speed of the input shaft matches the speed of the output shaft. The mechanical design transmits power and torque through gear teeth making the SSS Clutch inherently stronger than other clutch designs and explains why SSS Clutches are used in demanding and high power applications like Power Generation and Naval Propulsion. Read more information on How it works.


Quality and Reliability

The SSS Clutch is designed to last beyond the life of the equipment it is used on. We expect the clutch to be the “fit and forget” component in the system it integrates into. We do offer service and after sales support for every clutch we have ever made, but as SSS Clutches can provide trouble free service for over 50 years, this has always been as a service to our customers not as a money making exercise. Every SSS Clutch is tested prior to despatch and has a unique serial number. Read more on our Quality system.

Clutch Applications

Our principle applications for the SSS Clutch are as follows, but we are always looking for new applications that utilise the unique features of the SSS Clutch.

· Energy Transition and Grid Stability

· Power Generation

· Marine Propulsion

· Process Drives

· Auxiliary Drives

Read more about where SSS Clutches are used and the customer benefits under Clutch Applications.

You can also look at our various Case Studies for each application.

SSS is working hard with our customers and government bodies to support the transition to net zero and to save energy, this action is driving growth and expansion in the company. SSS has a long history of applications and projects that support the Energy Transition like Synchronous Condensing, Energy Storage, Dual Drive Gas Compression and Energy Recovery for pumps.

Our Customers

SSS typically supplies all new clutches to Original Equipment Manufacturers ( OEMs) as the SSS Clutch is normally integrated into another piece of equipment like a Power Station or a Naval Vessel. These OEMs are based around the globe and we have a network of agents in many countries who support the sales of SSS Clutches. Details of the agents contact details can be found at Get in Touch. We do supply Spares and Service to end users of the equipment.