Duplex Bearings

Duplex Bearings are matched bearings that provide accurate alignment in radial and axial directions. These bearings are designed to eliminate vibration and offer a higher load capacity, leading to longer life and increased system reliability. Duplex bearings are matched by loading every single bearing with the desired preload, measuring the axial offset, and grinding the relevant ring face. When assembled as a set, these bearings create a precise sub-assembly with a known preload, offering increased load capacity, a stiffer assembly, and optimised life.

Value without compromise

Duplex bearings are available in different configurations, such as back-to-back, face-to-face, tandem, and universal. The individual bearings are matched to ensure a uniform fit and are designed to be axially loaded to a specified preload. The radial play is larger than normal for deep groove duplex bearings to facilitate the desired contact angle, rigidity, and axial load capacity. Angular contact bearings, on the other hand, typically have standardised preload and contact angles. It’s important to note that the preload should be optimised to give the required stiffness but be the minimum to ensure the lowest start-up and running torque, thus promoting good bearing life.

The installation and configuration of duplex bearings can be back-to-back, face-to-face, or tandem arrangements, each with different properties regarding stability, stiffness, load acceptance, and misalignment compensation. Universally matched bearing pairs provide the advantage of being able to be assembled in various pairing configurations without any loss in performance. Multiple duplexed bearing configurations can be used together to achieve the desired results. GRW also produces super-duplex bearings, which are double-row deep groove radial or angular contact bearings designed for specific applications.

IEC bearings product range

A complete range of bearings and configurations designed to carry load, reduce friction and support rotating and oscillating systems in any application.

Utilise our customised Bearing Selector tool here.

Markets

IEC have a range of mechanical solutions to suit a broad spectrum of markets and applications, from aerospace to skateboards.

Markets

IEC have a range of mechanical solutions to suit a broad spectrum of markets and applications, from aerospace to skateboards.

Markets

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Engineering in motion

We act as partners, making our customers’ engineering challenges ours to solve, removing stress and freeing up time to turn ideas in to innovation.

Product:

Bearings

Application:

High pressure pure air generators

Challenge:

High pressure pure air generators are designed to replace rechargeable gas bottles on modern military aircraft. The system draws in atmospheric air to provide a continuous supply of high-pressure pure air, which results in unlimited mission duration and eliminates the logistics burden associated with gas bottles.

Solution:

For critical applications, reliability and resilience is paramount. IEC supplied components are capable of operating with high degrees of accuracy under extreme load.

Product:

Bearings

Application:

Co-ordinate measuring machines (CMM)

Challenge:

5-axis measurement represents the biggest step-change in measurement capability ever introduced, delivering unprecedented speed and measurement flexibility, whilst avoiding the speed versus accuracy compromises inherent in conventional techniques.

Solution:

Duty of CMMs is generally low hence there is intermittent operation of bearings. Machines do require high reliability so products are tested and developed continuously, meaning technical support from bearing OEMs is critical. Some bearings are supplied with specific profiled outer ring designs.

Product:

Bearings

Application:

Peristaltic pump

Challenge:

Peristaltic pumps use occlusion rollers and positive displacement to feed fluid in industrial and medical applications, regulating flow and eliminating the need for valves. Bearings fitted in occlusion rollers have a cycle of coming on and off load with the potential to skip.

Solution:

It is important to select a bearing with high quality machining of its raceways to allow the bearing to readily accept these changes in state.

Download technical documents and brochures.

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Duplex Bearings

Value without compromise

IEC bearings product range

Duplex

Thrust

Specialist & customised

Utilise our customised Bearing Selector tool here.

Markets

Markets

Markets

Engineering in motion

Product:

Application:

Challenge:

Solution:

Product:

Application:

Challenge:

Solution:

Product:

Application:

Challenge:

Solution:

Download technical documents and brochures.

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