About us

SSS is the acknowledged expert in automatic overrunning clutches for high power/high speed applications

Since our inception, more than 70 years ago, SSS has concentrated on the development and production of SSS Clutches. We haven't tried to expand into other fields, preferring to perfect the SSS Clutch and to increase its use in more and more applications.

The SSS Clutch is a sophisticated freewheel and as such with today's emphasis on energy efficiency and flexibility the requirement for SSS Clutches is continuing to increase.

Due to their robust design, SSS Clutches are also suitable for use in simple systems where long life, reliability and/or low cost are important.

The SSS Clutch is engineered for the application and as such we spend time and use our experience to understand customer's requirements and design accordingly. This attention to detail and emphasis on real quality has given us the reputation of which we are very proud.

  • The highest power SSS Clutch transmits 400MW at 3000rpm.
  • The highest torque SSS Clutch transmits 4MNm at 600rpm.
  • The highest speed SSS Clutch rotates at 16 000 rpm
  • SSS Clutches are used in a huge range of applications where reliability and long life are critical.
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    Founded in 1950, SSS Gears is a specialist manufacturer of high power clutches for demanding applications supplied around the Globe, with a long history of engineering excellence and product reliability.

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    SSS Clutches are manufactured to stringent quality standards and every clutch has a unique serial number and is individually tested prior to despatch. SSS Clutches are designed for long term reliability and typically outlive the equipment they are fitted to.

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    Spares & Service

    SSS keeps a detailed record of a every clutch we have manufactured since the company started over 70 years ago. SSS Clutches rarely require parts or service, but when they do, we are happy to support at a reasonable cost.

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    SSS is continually developing talent and offers training and experience to new starters. SSS is committed to a diverse and inclusive workforce and is proud of the long service history that many staff have with the company. SSS is owned by the Harold Sinclair Trust, which was set up for the long term benefit of employees, so we take a long term view on company strategy and employment.