Magnetic fluidic seal (Magring Seal)

Bearing grease, gas, dust and other types of contamination can be removed completely with the air pollution prevention seal.

Special Features

It is a one-piece construction, really easy one, compared to the original magnetic fluidic seal.
Extremely thin design can be constructed: down to 1mm
Possible to design a free shape of the seal
Possible to use with shaft, housing materials: both magnetic and non-magnetic

Usage

Dust preventing seal

Indirect seal for the clean robot
PC Hard disc device
- spindle shaft seal
- head driving parts' seal
bearing seal
Clean room's FA devices' seal

Example of magnetic fluidic seal usage

Assembled with the bearing

Mechanism of the magnetic fluidic seal

Magring seal is making the magnetic field without intervening the shaft.
(3-piece has to be made by using shaft and seal to make magnetic field, so the shaft material has to be magnetic)

Sizes, possible to manufacture

Magring Seal

Outer Diameter	Less than 90mm phi
Inner Diameter	More than 20mm phi
Thickness	Less than 4mm
Seal Width	(One side less than 10mm)

*Free to make a design with different shapes and measures of the specific molds

Magring seal measures: Example

＜Machined products＞
Φ60mm×Φ50.2mm×3mmt
Φ40mm×Φ25.2mm×2mmt

etc.

＜Specific molds＞
Φ20mm×Φ10.2mm×2mmt
Φ120mm×Φ115.2mm×3mmt

etc.

3-piece Mgnetic Fluidic Seal

Outer Diameter	Less than 200mm phi
Inner Diameter	No limit
Thickness	5mmt: fixed
Seal Width	No limit

3piece magnetic fluidic seal measures: example

Φ100mm×Φ90.3mm×5mmt／Φ180mm×Φ175.3mm×5mmt

etc.

Following standard model are available for 3-piece Magnetic Fluid Seal

ID(Φ)mm		OD(Φ)mm	Thickness(t)mm
25.3	+0.05 -0	40	5 (4)	±0.2
30.3	+0.05 -0	45	5 (4)	±0.2
45.3	+0.05 -0	60	5 (4)	±0.2
60.3	+0.05 -0	80	5 (4)	±0.2
80.3	+0.05 -0	100	5 (4)	±0.2
100.3	+0.05 -0	120	5 (4)	±0.2
120.3	+0.05 -0	145	5 (4)	±0.2
135.3	+0.05 -0	160	5	±0.2
150.3	+0.05 -0	175	5	±0.2
155.3	+0.05 -0	180	5	±0.2