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Dialysis pump with maintenance-free bearings

Profile

  • What was needed: Spherical bearings for use in a dialysis pump
  • Requirements: Long service life, temperature resistance, minimised maintenance, lubrication-free
  • Application area: Medical technology, fluid technology
The Japanese company Iwaki is one of the world's leading manufacturers of chemical pumps and flow control devices. Its strength lies in the production of various models in small batch sizes, which makes it possible to fulfil the requirements of a wide range of industrial sectors. The products also include wobble piston pumps, which can be found in many laboratory applications and especially in dialysis machines thanks to their high dosing accuracy for viscous media with low pulsation.
Dialysis machine from Iwaki Co. Ltd.

Problem

Iwaki originally used metal spherical bearings in its dialysis pumps, which made constant relubrication necessary. The developers were therefore looking for a long-lasting, disruption-free alternative that would minimise maintenance costs.

Solution

With igubal spherical bearings, which do not require any lubrication, the perfect solution was found. To determine whether the use of the plastic bearings is worthwhile, Iwaki carried out a test in which the pump equipped with igubal was moved for 10,000 hours in a temperature cycle from -10 to +60 degrees - with satisfactory results. The pumps have been operating reliably and without disruptions for over 7 years.

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The terms "Apiro", "AutoChain", "CFRIP", "chainflex", "chainge", "chains for cranes", "ConProtect", "cradle-chain", "CTD", "drygear", "drylin", "dryspin", "dry-tech", "dryway", "easy chain", "e-chain", "e-chain systems", "e-ketten", "e-kettensysteme", "e-loop", "energy chain", "energy chain systems", "enjoyneering", "e-skin", "e-spool", "fixflex", "flizz", "i.Cee", "ibow", "igear", "iglidur", "igubal", "igumid", "igus", "igus improves what moves", "igus:bike", "igusGO", "igutex", "iguverse", "iguversum", "kineKIT", "kopla", "manus", "motion plastics", "motion polymers", "motionary", "plastics for longer life", "print2mold", "Rawbot", "RBTX", "readycable", "readychain", "ReBeL", "ReCyycle", "reguse", "robolink", "Rohbot", "savfe", "speedigus", "superwise", "take the dryway", "tribofilament", "triflex", "twisterchain", "when it moves, igus improves", "xirodur", "xiros" and "yes" are legally protected trademarks of the igus® GmbH/ Cologne in the Federal Republic of Germany and where applicable in some foreign countries. This is a non-exhaustive list of trademarks (e.g. pending trademark applications or registered trademarks) of igus GmbH or affiliated companies of igus in Germany, the European Union, the USA and/or other countries or jurisdictions.

igus® GmbH points out that it does not sell any products of the companies Allen Bradley, B&R, Baumüller, Beckhoff, Lahr, Control Techniques, Danaher Motion, ELAU, FAGOR, FANUC, Festo, Heidenhain, Jetter, Lenze, LinMot, LTi DRiVES, Mitsubishi, NUM,Parker, Bosch Rexroth, SEW, Siemens, Stöber and all other drive manufacturers mention on this website. The products offered by igus® are those of igus® GmbH