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CONTRACT NUMBER: POIR.01.01.01-00-0488/19-00
PROJECT TITLE: Development of an innovative, compact sealing system with magnetic liquid CMFS (Compact Magnetic Fluid Seal)
Project description: a project implemented under the Smart Growth Operational Programme, measure 1.1. „R&D projects of enterprises”, Sub-measure 1.1.1 „Industrial research and development works carried out by enterprises” co-financed by the European Regional Development Fund.
Project title: development of an innovative, compact sealing system with magnetic fluid CMFS (Compact Magnetic Fluid Seal )” with the application number POIR.01.01.01-00-0488/19
Objective of the project: the aim of the project is to develop an autonomous sealing system with a magnetic liquid that will cooperate with conventional rolling bearings and/or drive train assemblies. The newly developed sealing system will be an alternative to the commonly used contact lip seals. The seal is to be distinguished by its compact structure, which allows it to be used in most typical rolling bearing-seal joints.
Cassete solution Magnetic Fluid Seal , abbreviated as CMFS, is to create a liquid sealing ring from the magnetic liquid in the gap created by the pole pieces and the magnetic ring. In this system, the possibility of keeping magnetic liquids in a given place by means of a magnetic field is used. The CMFS system can be compared to the form of a liquid O- ring constituting a sealing barrier. The proposed solution is characterized by:
Model of the CMFS
1 – Non-magnetic components (housing)
2 – magnetic elements – pole pieces
3 – permanent magnet
4 – magnetic liquid located in positions I and II
Construction drawing of the CMFS Cassette seal seal
Components of the CMFS seal
Static Critical Pressure (pcr)
As a standard, it is assumed that for classic contact seals, the static critical pressure is less than 20 kPa , the CMFS seal has achieved as much as 46 kPa
Measurement of the static critical pressure of the CMFS seal, where pcr is 46 kPa
The limit rotational speed of the system operation and the torque
The result obtained for the limit rotational speed: 12,000 rpm is much higher than for contact seals (8,000 rpm ). At the same time, we obtained a very low torque, which did not exceed 0.04 Nm – standard seals allow for a minimum of 0.1 Nm
Parameters during the speed test in the speed range 0-12000 rpm (0-16m/s)
Patent pending
As a result of research work under the project co-financed by the European Regional Development Fund „Development of an innovative, compact sealing system with magnetic fluid CMFS (Compact Magnetic Fluid Seal )” we filed a patent application (P.41631) entitled: „Compact seals with magnetic fluid CMFS and the method of their production”
The “GUMET” Production Plant in Kraśnik was established in 1985. From the very beginning, we have been manufacturing rubber and rubber-metal elements. We specialize in the production of bearing seals for the needs of industrial customers – mainly bearing manufacturers.
GUMET Sz. Geneja,
Kozłowska, Latos Sp.J.