The flexible vibratory bowl feeder (flex feeder) is the go-to solution for automatically singulating and orienting parts that are irregular in shape. As machine vision and industrial robots have spread through Chinese factories, flex feeders have opened up new possibilities for full automation. A good flex feeder is judged by five metrics: stable operation, high precision, fast cycle time, low noise, and zero maintenance. Because every industry, part size, and throughput requirement is different, thorough sizing is essential. Only when the real needs are known can the feeder deliver a reliable solution.
1. Pick the feeder size according to part size, weight, and batch quantity

Danikor currently offers seven standard models. Match your parts to the guidelines below:
? U10 / U15 – ideal for tiny parts such as electronic components and mobile-phone or watch parts. Maximum part size: < 15 mm; maximum part weight: < 15 g.
? U20 / U25 – ideal for small metal stampings (e.g., shims, leaf springs) and medium–small connectors. Maximum part size: < 30 mm; maximum part weight: < 15 g.
? U30 / U40 / U55 – ideal for large, irregular parts such as toy bricks, medical devices, and automotive components. Maximum part size: < 120 mm; maximum part weight: < 50 g.
The quantity of parts you want pre-loaded on the tray also influences the choice: larger trays reduce refill frequency.

2. Match tray geometry to part shape and required orientation
Part geometry directly affects feeding efficiency. By understanding how parts must be presented, you can shorten cycle times and simplify the overall flexible-feeder system. Danikor supplies interchangeable trays in four basic styles:
? Flat tray – a general-purpose surface for parts that only need separation.
? Groove (channel) tray – parts settle into V-grooves and line up automatically; excellent for cylindrical or elongated parts.
? Hole tray – large through-holes capture headed or peg-shaped parts and present them in a defined posture.
? Dual tray – a split surface that keeps two different parts separate within the same feeder, saving floor space and eliminating mix-ups.
Custom textures or additional grooves can be added for especially challenging shapes.

3. Final checklist before purchase
? Measure the largest, heaviest, and most awkward part you will ever run.
? Decide the desired cycle time and how many parts you want pre-loaded.
? Confirm that the chosen tray style can achieve the required pickup pose for your robot or vision system.
By following these three steps, your flex-feeder project will start with the right model and tray, greatly increasing the likelihood of a successful, low-maintenance automation cell.