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Linear Feeders

Linear feeders, also known as multi-lane linear systems, transport oriented components from bowl feeders over short or long distances, creating a buffer storage area. They ensure a consistent flow of oriented components from the bowl feeder to escapement devices, allowing for product accumulation before reaching a machine or handling unit.

A linear feeder from RNA.

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Linear feeders from RNA enable linear sorting through a dedicated sorting track and can also be used for component orientation. A multi-track design allows for higher output and increased efficiency.


RNA linear feeders are designed to sort, orient, and convey components in a controlled linear flow. Using a linear sorting track, components are guided into the correct orientation, while misoriented parts are automatically returned to the pre-feeder via a chute and vibration tray. This ensures consistent output and stable downstream processes.

In addition to horizontal conveying, linear feeders can buffer irregular part supplies from upstream equipment, smoothing flow and maintaining a continuous feed to assembly or inspection stations. With multi-track configurations, higher output rates can be achieved, making them suitable for demanding production environments. Linear feeders are available in lengths of up to 3 meters and share RNA’s proven multi-magnet drive technology, offering a compact, robust, and virtually maintenance-free solution.

For applications requiring maximum flexibility, RNA’s FlexType™ high-performance linear feeding systems(FlexType™ L/M/S/C) extend these capabilities further. Designed for component parts with few discernible orientation features, FlexType™ linear feeding systems can feed multiple variants within the same part family on a single platform. Selection tracks can be changed quickly, allowing rapid adaptation to new components or production requirements.

FlexType™ linear feeding systems are available in various sizes and performance levels to suit the part characteristics and assembly line layout, combining high output with excellent operator comfort.


Digitalisation

RNA Standard Range RNA provide standard and custom feeding systems.

What is a linear feeder?

Linear feeders, also known as multi-lane linear systems, transport oriented components from bowl feeders over short or long distances. In addition to pure conveying tasks, linear feeders also function as buffer and accumulation lines. Even with incomplete or irregular feeding, components can be continuously supplied by the upstream sorting system to the next processing stage.

Linear feeders enable lateral vibration-free sorting (linear sorting lines) and can also be configured as multi-track systems to achieve higher sorting efficiency. Parts that are misoriented or rejected are automatically returned to the preceding feeding system via sorting hoppers activated by the linear feeder.

They also serve as drive units for bulk hoppers, allowing the accumulation of mass-produced parts. Due to their construction, vibratory hoppers powered by linear feeders ensure smooth, gap-free material flow and can handle large filling weights efficiently.

RNA linear feeders deliver high feeding capacities and maintain reliable performance even on long feeding lines or under demanding operating conditions.

Applications

Multi-lane linear system for Fasteners-Linear

Multi-lane linear system for Fasteners

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Multi-lane linear system for M8-Bowl

Multi-lane linear system for M8 nuts

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3D printed digital bowl feeders for Filigree parts from the electronics industry

RNA FlexType with 3D Printed Bowl feeder

3D Printed Bowl Feeder for Filigree Parts from the Electrical Industry

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The FlexType S is being used to handle yellow nozzles.

FlexType S for 30 types of nozzles

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The FlexType L is being used to handle plastic inserts.

FlexType L for plastic inserts

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A linear feeder is orienting and sorting of plastic housings.

Plastic housings

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Task: Correctly orienting and sorting of plastic housings

Performance: 720 parts per minute, the sorting is carried out on 16 tracks on a linear feeder.

A linear feeder from RNA.

Protective sleeves

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Task: Correctly orienting and sorting of protective sleeves

Performance: 600 parts per minute, the sorting is carried out on 10 tracks on a linear feeder.

The special feature of this installation is an “alternating feeder element” that serves to feed a second type of protective sleeve with a completely different geometry.

A close up of an automated system for correctly orienting and sorting closing caps.

Closing Caps

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Task: Correctly orienting and sorting of closing caps

Performance: 900 parts per minute, the sorting is carried out on 15 tracks on a linear feeder.

Special requirements for production in the clean room in the pharmaceutical industry.

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Industrial Automation Solutions

Multi-lane Linear System

Linear Feeders

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