This catalogue contains our complete range of both bare and ...Composed mainly of alloys of...

All dimensions are nominal, in millimetres unless otherwise stated. If further information is required, individual datasheets are available on our websites, or on CD.As part of the groups policy of continued product improvement, specifications may change without notice. Our sales office will be pleased to help you with the latest information on our products.

MATERIALS AVAILABLE:

ALNICO / ALCOMAX

A good general purpose material that can be machined or cast to the requiredshape prior to being magnetised. It has a maximum working temperature of550ºC and good corrosion resistance.Composed mainly of alloys of Aluminium, Nickel and Cobalt, Alnico / Alcomaxmagnets are manufactured by either sintering, or casting. Sintered magnets haveslightly lower magnetic properties to cast magnets, but have better mechanical characteristics. Cast magnets allow for more complex shapes such as horseshoes,which are not possible with other magnetic materials.Alnico / Alcomax is very hard and brittle, meaning drilling by conventional methods is very difficult. Holes are generally cored during the manufacturingprocess, with magnets being cast close to the finished size, and then machined tothe correct dimensions.Alnico / Alcomax magnets can be easily plated for cosmetic reasons if required.

All dimensions are nominal, in millimetres unless otherwise stated. If further information is required, individual datasheets are available on our websites, or on CD.As part of the groups policy of continued product improvement, specifications may change without notice. Our sales office will be pleased to help you with the latest information on our products.

The Comus International group of companies consists of:

Comus International 454 Allwood RoadCliftonNew Jersey 07012U.S.A

Tel: (1)973 - 777 - 6900Fax:(1)973 - 777 - 8405email: [email protected]: http://www.comus-intl.com

Assemtech Europe LimitedUnit 7, Rice Bridge Industrial EstateThorpe - Le - SokenEssexEnglandCO16 0HLTel: +44 (0)1255 862236Fax: +44 (0)1255 862014email: [email protected]: http://www.assemtech.co.uk

Comus Belgium BVBAOverhaamlaan 40B-3700 TongerenBelgium

Tel: +32 (0)12 390400Fax: +32 (0)12 235754email: [email protected]: http://www.comus.be

Comus International SARLImmeuble ‘Les Juilliottes31 Cours des JuilliottesF-94700 Maisons-AlfortFrance

Tel: +33 (1)41 79 18 70Fax: +33 (1)41 79 18 71email: [email protected]: http://www.comus.fr

Switching Technologies GuntherB-9, B-10, & C-1 Special Economic Zone (MEPZ)KadapperiTambaramChennaiIndiaTel: +91 44 22628093Fax: +91 44 22628271email: [email protected]

Comus Electronics IndiaNo 74A Anbu StreetGandhi NagarEkkattuthangalChennai 600 097TamilNaduIndiaTel: (1)973 - 777 - 6900Fax: (1)973 - 777 - 8405email: [email protected]: http://www.comusindia.com

We also have a large network of worldwide agents. These can be seen on any of our websites, or on our company profilebrochure.

Com/3/Aug05/Iss.1

This catalogue contains our complete range of both bare and cased magnets:

Bare

Rectangular / Block

Cylindrical / Disc

Ring

Cased

Rectangular Plastic

Rectangular Metal

Threaded Plastic

Threaded Metal

FERRITE

Ferrite magnets are sintered permanent magnets composed of Barium orStrontium Ferrite. Aside from having good resistance to demagnetization theyhave the popular advantage of being low cost.Ferrite magnets are very hard, but also very brittle, and as such require specialized machining techniques. They are machined in an unmagnetized state.Anisotropic grades are oriented in the manufacturing direction, and must bemagnetized in the direction of the orientation.Isotropic grades are not oriented and can be magnetized in any direction,however a certain degree of greater magnetization will be found in the pressingdimension, which is usually the shortest dimension.Ferrite is a cost effective material which has high resistance to demagnetisation.It has a maximum working temperature of 250ºC and excellent corrosion resistance.Due to their very low cost, Ferrite magnets are used in a wide range of applications, from loudspeakers, and motors, to childrens toys, and are today themost commonly used permanent magnets, worldwide.Because of the sintering process, Ferrite magnets may have a thin layer of magnet powder on the surface, and hence for clean applications where contaminant could prove troublesome, some form of coating may be required.

NEODYMIUM IRON BORON (NdFeB)

An alloy of the Lanthanide group of elements, and also known as Rare Earthmagnets, Neodymium Iron Boron (NdFeB) along with Samarium Cobalt (SmCo) arethe most advanced permanent magnet materials available today. There are variousgrades available which satisfy a number of application requirements.NdFeb magnets are available in sintered or bonded forms. Sintered magnets offerthe higher energy, however require some finishing techniques to keep to tight tolerances not required using bonded forms.NeFeb magnets are again, hard, yet brittle, and are all anisotropic, (except bondedNdFeb B10N material), and as such can only be magnetised in the orientationdirection. B10N may be magnetized in any direction, and with multiple poles,although this requires special fixtures.Corrosion resistance of NdFeb magnets is low. Therefore all our standardNeodymium magnets are Bright Nickel plated which gives excellent resistance toharsh environments. Alternative Zinc and Tin platings are also available, as well aspowder epoxy coatings in many colours, which further protect the magnet.All Rare Earth magnets have extremely strong magnetic fields and must be handled very carefully to avoid damage.They have a maximum working temperature of around 130ºC.

BARE MAGNETS

Magnets can be supplied as a separate product or part of a proximity switch setconsisting of switch and magnet.

CASED MAGNETS

Cased magnets can be supplied as a separate product, where you can select amagnet to suit your operation, or as part of a proximity switch set consisting ofmatching switch and magnet.

CUSTOM DESIGN

Looking for a magnet that is not shown overleaf? Do you need a different size? A different grade of material or coating? Contact our sales office. We can manufacture custom magnets toyour own specifications in large or small volumes.

Related Catalogues available...................just ask for your free copy:

Reed Switches Proximity Switches Economy Proximity Switches

MAGNETS

CylindricalRectangularRingCylindricalCylindricalCylindricalCylindricalCylindricalRectangularRectangularRectangularRectangular

CTI002MMP4428MM1218M1219-1PRNMPRMMPRMPRLMRSH33RSH34RSH32RSH01

-15 (Outer Ring)

3.2 (Inner Ring)312.51063----

7214030181519.0525.427.912.7

-----3.186.354.753.18

13-----3.186.354.751.59

1500110010001000900250690550140

-Bright NickelBright NickelUnplatedUnplatedUnplatedUnplatedUnplatedUnplatedUnplatedUnplated

Glass Filled NylonAlcomax

Cased MagnetsBare Magnets

Options / Features

Magnets

Diameter

Length

Width

Gauss Strength / Surface

Plating

Height

Case Material

Style

Type

mm

mm

mm

mm

Bright Nickel

2500

-

-

2

3

Bright Nickel

3200

-

-

3

4

M1219-3

Cylindrical

Bright Nickel

2500

-

-

2

6

M1219-4

Cylindrical

Bright Nickel

3500

-

-

5

10

M1219-5

Cylindrical

Neodymium IronBoron(NdFeb)

Bright Nickel

3500

-

-

5

6

M1219-6

Cylindrical


Bright Nickel

3900

-

-

4

6

M1219-8

Cylindrical


Bright Nickel

850

-

-

2

22

M1219-10

Cylindrical


Bright Nickel

3500

-

-

5

9

M1219-11

Cylindrical


Bright Nickel

2200

-

-

2

5

M1219-12

Cylindrical


Bright Nickel

3700

-

-

4

5

M1219-13

Cylindrical


Bright Nickel

2000

-

-

2

4

M1219-14

Cylindrical

Bright Nickel

2500

-

-

20

3

M1219-15

Cylindrical Cylindrical


Bright Nickel

4500

-

-

26

6

M1219-17

1000

6

-

600

-

-


3700

-

-

9

48 (Outer Ring)

42 (Inner Ring)

17 (Outer Ring)

12 (Inner Ring)

Ring

M1357

Ring

M1387

Bright Nickel

3700

-

-

9

60 (Outer Ring)

54 (Inner Ring)

Ring

M1363

ABS

-

Bare Magnets

Nylon 66

20

-

-

-

30

7

Rectangular

PSM

Aluminium

-

-

26

35

9

-

Rectangular

PSMM

Aluminium

-

-

20

35

8

-

Rectangular

PSRM

Nylon 66

-

-

20

30

7

-

Rectangular

-

-

14

6

PSSM

Rectangular

Nylon 66

-

-

14

20

6

-

MMPSM

Rectangular

Aluminium

-

-

-

Rectangular

ABS

-

32

-

Rectangular

Brass

M12 Thread

Threaded

Brass

Bright Nickel

-

50

-

-

M18 Thread

PTM 18

Threaded

Acetal

-

-

-

-

35

M12 Thread

PTPM

Threaded

Brass

Bright Nickel

-

-

-

35

PTSM

Threaded

Cased Magnets

Brass

-

-

7.5

-

29.5

-

Cylindrical

-

-

-

-

28

M8 Thread

CTI302M

Cylindrical

M1219-2 MPSM

Rectangular

LMSM

-

23

ABS

-

-

Rectangular

LMPSM

-

20

-

ABS

-

Rectangular

MC-12M CTCM

-

33

-

ABS

-

CTE002M PTM 12

M12 Thread

Cylindrical

SD70M

21.2

19.05

-

-

-

-

ABS

12

-

23


-

FerriteFerrite

Dimple polemarking

HighTemperatureHousing

6

Alcomax Alcomax Alcomax Alcomax AlcomaxAlcomaxAlcomax Neodymium IronBoron(NdFeb)






5032

15

8

14

6

14

6

15

9

-

13

8

-

-

Bright Nickel

-

Brass

Bare Magnets

-

-

This catalogue contains our complete range of both bare and ...Composed mainly of alloys of...

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