NEMA Services

Design & Development

NEMA has extensive experience in the development of new products for challenging environments with the capability and approvals to design and develop electric motors, electro-mechanical actuators and components for a wide variety of applications. We also specialise in prototype and development production. Our in house manufacturing techniques and facilities are ideal for prototype manufacture right through to serial production.

Every project undertaken is unique, resulting in the constant improvement of our skills and manufacturing techniques. Our engineers work closely with our clients and suppliers to ensure the efficient technical realisation of projects.

NEMA's vast experience in developing and manufacturing bespoke electic motors facilitate our unique ability to reverse engineer legacy products and designs, further exending the life of an otherwise obsolete or discontinued component.

With our engineering skills together with the latest software design tools and innovative equipment (EMFIS), NEMA are able to deconstruct, with or without the original drawings, an existing part sample and re-engineer a design solution together with any recommendations for design improvements or material specification updates.

Making The Old New!

Tasked by a customer to reverse engineer a brushed DC motor along with the matching analogue controller, NEMA was successful in designing a modern brushless alternative including a new digital controller. A particular challenge associated with this project was the 52dB operating noise limit to which NEMA's motor design expertise resulted in an impressive 40dB.

Bringing assemblies back to life

NEMA has the capability and approvals to carry out repair and overhaul work on electric motors, electro-mechanical actuators and components for a variety of applications, working from the original repair and overhaul manuals or testing and stripping the units to advise the repair required.

Where possible NEMA will repair and re-use components to ensure that the overhaul is as cost effective as possible. Alongside the repair and overhaul work, approved modifications can be implemented and qualified.

All repaired assemblies undergo a production acceptance test to ensure they are operating to the required specification. Our engineers undertake repair and overhaul work in a specially designed area segregated from original equipment to ensure cross contamination does not occur.

Accredited and precise

Over the years NEMA Ltd have grown with the demands of the industry, employing modern analytical instrumentation and methods, we meet the demanding requirements of aerospace and defence standards.

Our Inspection department utilise CMM, Image Dimension Measuring Systems, Shadowgraphs & Automatic Compression testing systems to ensure conformity to specifications.

In line with our industry, all systems are calibrated, traceable to national standards, allowing NEMA to certify conformity as well as produce FAIRs to the strict requirements of AS 9102 Rev B

Factory Acceptance and Design Verification Testing

NEMA's unique range of in-house testing equipment is key to the design and development of high perfomance projects and products.

A wide range of dynamometers together with our engineering expertise enables us to test a comprehensive scope of torques and specifications.

Our testing services are especially suited for R&D and durability testing.

Processing & Assembly

At NEMA we have a number of in-house processes which are required for the finishing of motors and electro-mechanical assemblies we produce which enable us to maintain full control of all these processes.

Balancing

To avoid mechanical failures and reduce vibration of rotor and armature assemblies, NEMA has the ability to statically or dynamically balance components. Weight range: 0.05 - 10kg Journal Diameters: 2 - 35mm

Impregnation

All our electrical windings are impregnated, to improve the structural integrity and heat conduction properties, by vacuum or pressure impregnation using polyester or skybond varnishes.

Vacuum and Potting Encapsulation

Where improved environmental sealing is required we can encapsulate the electrical winding in our encapsulation facility using various types of materials as required by our clients.

Painting

NEMA has a fully equipped paint spray facility to enable finishing of components, using high temperature epoxy paints and lacquers, wherever this is required.

Magnetising

NEMA has the ability to magnetise rare earth magnets using capacitor discharge magnetising equipment. This enables the magnets to be magnetised before or after assembly to ensure correct pole alignment.