Pneumatic Cylinder Magnet

It is essential to monitor the motion processes in pneumatic cylinders. The permanent magnet mounted on the piston inside the Pneumatic cylinder . The Magnetic cylinder sensors contactlessly detect the piston position of the cylinders and give a switching signal .

HSMAG Magnet Co., Ltd Available typical magnet rings for Pneumatic Cylinder application:

Cylinder (mm) Magnet Ring/two half Ring Magnetic Strength
Φ20 D19.5*12*4mm ≥650Gauss
Φ25 D24.5*16*4mm ≥650Gauss
Φ32 D31.5*21*4mm ≥650Gauss
Φ40 D39.5*24*4mm ≥650Gauss
Φ50 D49.5*32*4mm ≥650Gauss
Φ50 D49.5*35*5mm ≥650Gauss
Φ63 D62.5*42*4mm ≥650Gauss
Φ63 D62.5*48*5mm ≥650Gauss
Φ80 D79.5*58*4mm ≥650Gauss
Φ100 D99.5*78*5mm ≥650Gauss
D125 D124.4*96*6mm ≥650Gauss
D160 D159*131.2*6mm ≥650Gauss
D200 D199*185*5mm ≥650Gauss
Pneumatic Cylinder Magnet

Pneumatic Cylinder Magnet

Different Size Magnet Ring for Pneumatic Cylinder

For a famous China company in the pneumatic field we have realized 100.000 neodymium rings for pneumatic cylinder magnetic sensor.

The final customer’s need was to improve sensor’s reading precision reducing dimensions.

His first solution was a plasto-ferrite ring, axially magnetized. The low properties of this magnetic material forced the use of a lumbering magnet, beyond the necessity of keeping the ring very close to the sensor for a better reading.

Our work, instead, focused on the realization of sintered neodymium magnet ring, axially magnetized and coated with epoxy resin.

The ring magnetic performances, definitely higher than previous solution, allowed to reduce sensor’s dimension, offering a more precise reading. Consequently, the distance between magnet and sensor increased. The axial magnetization of neodymium ring has been realized more perpendicular comparing with the one of plasto-ferrite magnet. In the end, epoxy coating has garanted a longer life of pneumatic cylinder.

End customer has finally obtained a better sensor’s precision, putting on the market an evolved system, with reduced sizes.
HSMAG is able to projects and produce customized magnets, to satisfy every customer needs.

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