Company details for:

Reliance Precision Ltd

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Rowley Mills,
Penistone Road,
Fenay Bridge,
Huddersfield,
West Yorkshire,
HD8 0LE,
United Kingdom

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Products / Services

Fine Pitch Gears

With over 50 years of experience in the design and manufacture of precision gears, Reliance has developed an extensive range to suit a wide variety of customer applications.

Alongside our precision gears we offer hardened and precision ground gears for applications requiring higher load capacity and a very competitive range of brass gears for applications where there is a need to balance accuracy and load capacity against cost. Typical diameters range from 5 mm to 100 mm.

Reli-a-Flex Shaft Couplings

The Reliance Technology Reli-a-Flex® Couplings range has been engineered by engineers, for engineers. Reli-a-Flex® Couplings are flexible shaft or beam couplings, specifically designed for use in complex environments.

A Reli-a-Flex® Coupling is crafted from an aluminium alloy (grade 7075-T6) in a one-piece configuration. This design, developed in-house at Reliance, ensures exceptionally smooth motion transmission, high torsional stiffness, low bearing loads, and an extended operational life. The slot pattern has undergone extensive analysis and testing to achieve the optimal balance between zero backlash, torsional stiffness, and minimal bearing load, while ensuring an operational lifespan exceeding 50,000,000 cycles at rated load and 80% offset. With two sets of identical slots, the Reli-a-Flex® flexible shaft or beam coupling is inherently constant velocity and adept at accommodating angular, parallel, and axial offsets. Available in sizes ranging from 6 to 40 mm in diameter and capable of handling speeds up to 70,000 rpm, our Reli-a-Flex® couplings present a highly reliable one-piece coupling design.

At Reliance, we understand that the performance of a machine is directly dependent on the integrity of its shaft connections. Recognising the vital role of shaft couplings, we have meticulously designed and tested the Reliance Technology Reli-a-Flex® Couplings range to ensure seamless operation over countless cycles without trouble.

It is often impractical to achieve perfect alignment when joining two shafts; hence, some level of misalignment is unavoidable. This misalignment is typically a result of manufacturing tolerances of the support blocks and structural alignment imperfections. Unless these tolerances are exceptionally precise, the use of a solid coupling can lead to excessive shaft loading and significant bearing stresses. In some instances, misalignment may be limited to angular or radial discrepancies, but it is frequently a combination of both.

Consequently, careful selection of couplings is imperative, as different configurations are engineered to perform variably based on specific applications, each with its distinct advantages and disadvantages.

Flexible shaft couplings from Reliance are particularly well-suited for torque transducers, encoder couplings, and all applications necessitating rotary torsional stiffness to connect the motor drive shaft to the targeted system. Our engineers possess extensive experience in specifying and working with shaft couplings, and they are always ready to provide application guidance across any of our ranges, which include:

Rack Driven Actuators

This rack driven actuator (Racktuator) is a compact actuation system which combines the Reliance Cool Muscle servo system with a rack and pinion drive to give precise linear motion for high speed applications.

Multiple configurations are available developing peak forces up to 150 N and rated speeds of 300 mm per second, with resolutions of better than 1 micron and standby power consumption of less than 1.7 watts. The assembly has a number of different mounting options for ease of mechanical installation.

Racks & Pinions

A rack and pinion system gives the ability to transfer rotary to linear motion, with all the accuracy expected of a geared system.

The racks are manufactured from ground, hardened stainless steel or ground stainless steel and available with a choice of accuracies, pitches, and lengths, plus the facility to provide modifications such as flats, journals or custom ends. Hobbed stainless steel and brass racks are also available. The rack pinions are plain or anti-backlash, also with a choice of accuracies, pitches, bore sizes, alternative materials and coatings.

Gears & Geared Systems

Reliance specialises in high accuracy, fine pitch gears 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.

Clean & High Vacuum Assembly

Reliance supplies custom-built mechanical and electro-mechanical assemblies for use in clean and high-vacuum applications.

These include products used for scientific, industrial and environmental analysis, and products used in the manufacture of semi-conductors.

Reliance has invested in modern cleanroom facilities and cleaning lines, together with stringent quality and process controls, to ensure the high level of cleanliness demanded from these industries.

Quadrupole Mass Filters

Having over 20 years of experience, one of our core areas of expertise is the ability to manufacture, assemble and undertake mechanical and functional testing of quadrupole mass filters for use in LC, GC, ICP, SIFT and QToF mass spectrometers.

Through continued investment and development our capability has evolved into a state-of-the-art quadrupole manufacturing facility incorporating ion flight modelling, close tolerance rod and ceramic grinding, assembly in cleanroom conditions, a diverse range of fully automated component and assembly cleaning methods, as well as mechanical and functional testing.

Precision Cut Gears

Our range of precision gears offers a wide selection of anti-backlash gears, spur gears, hubless gears and hardened gears with many hundreds of thousands of combinations of bore size, face width, material, module and number of teeth. In line with our commitment to meeting customer requirements, any tooth number that can be configured for any given gear diameter can be supplied. This allows our customers ultimate flexibility when selecting their gear ratio and the ability to use the smallest or most practical centre distance.

Worms & Wheels

Precision worms and wheels from Reliance. Worm and wheel drives provide high ratio right angled motion in a small space. Both precision cut and precision cold rolled worms are available (refer to the features, options and technical information on the individual product pages). In general, for more accurate applications the precision cut worms will give the best results and for applications requiring a little more torque transmission precision rolled worms should be used.

About us

Reliance Precision Ltd are a specialist engineering company, whom are unique in their offering of fully bespoke solutions and catalogue products.

The company product catalogue provides a huge range for design engineers- with basic essential such as captive screws to finish sub-assemblies for linear and rotary motion.

Reliance offer a selected mix of both manufactured and in-house design products with leading global manufacturers’ products, which are modified to comply with individual requirements. Design support is provided at the early stages to create complete prototyping solutions and integrated assemblies for full production that are cost effective.

Reliance supply extensive design, development, manufacturing, assembly and test facilities in both the UK and Ireland. The company offers from here turnkey technical services for customers requiring bespoke assemblies, components and systems. This helps bring new products to the market, resolves technical problems and extends the life of established products.

Wherever you start with Reliance, you can expect technical excellence, total commitment and high quality solutions for the success of your project.