Gears
and Geared
Systems
A Heritage in Precision Gears
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Reliance specialises in high accuracy, fine pitch gearing for specialist servo, measurement and actuation mechanisms in aerospace, scientific, medical and instrumentation markets. Our heritage derives from over five decades of pioneering work in product development, manufacture and metrology.
Reliance offers a flexible range of services including concept design, detail design, design analysis, application modelling, diagnostic investigation, product development and prototyping, low to medium volume production, assembly and testing.
Find out more about our design and manufacturing services.
Our Range of Gears and Geared Systems
Standard Gears
For our standard range of commercially available gears, including integrated solutions, see Reliance Precision Mechatronics.
Custom Gears
Fine pitch, high precision geared components, specific to customers individual requirements.
Geared Systems
Bespoke measurement and actuation mechanisms for servos, instrumentation, scientific and aerospace systems.
Custom Gears
Typically our manufactured gears range from 3mm diameter to 300mm, from industry standard quality to qualities in excess of AGMA Q14 or ISO Grade 5. Our core speciality is in fine pitch (less than 1 module) with additional complexities such as splines, keyways, complex milled details, ground journals and anti-backlash mechanisms. We also have in-depth experience of heat treatments, specialist coatings, cleaning and additional processing requirements. We can offer external and internal spur gears, bevel gears, worms and worm wheels.
Geared Systems
At system level, we have extensive experience in technically challenging mechanisms for a wide range of applications including:
- Angular positioning applications accurate to less than 15 arc second (equivalent to the angle subtended by 7cm over 1km or 0.001% or 10ppm)
- Linear positioning systems down to 1 micron (open loop)
- Airborne servo mechanisms (actuation and/or feedback)
- Coarse and fine measurement systems
- High performance epicyclic gearbox design and manufacture
- Gimbal actuation and feedback
- Optical systems and integration
Behind each of these examples is a fundamental understanding of gear engineering, combined with a manufacture and test philosophy that allows us to analyse systems and measure performance.
Metrology
Knowledge is at the heart of Reliance's technical capability and this has developed as a direct result of our commitment and investment in inspection and test. Component inspection is carried out using a comprehensive range of equipment including master quality gear artefacts and a Klingelnberg co-ordinate measuring machine. Not only does this allow us to assure the quality of our manufactured components, it also allows a much deeper insight into our processes and machine tool performance. We carry out 100% inspection during the manufacturing process on every gear we produce - the best way to guarantee the quality.
We also developed our own techniques for measuring transmission error of a system, whether that system is a customer's mechanism, one of our own machine tools, or a component undergoing an endurance test regime. In production, this allows us to evaluate the errors, and determine whether a system is within specification or not. In a development test environment it allows us to analyse wear performance, system deterioration, determine stiffness characteristics, and identify failure modes, often before they occur.
