Scan-Speak

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· FLOW RESISTORS
· MAGNETS

TECHNICAL
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Scan-Speak Magnets

Scan-Speak accessories: Magnets.

Application note
Bucking magnets mounted on the back of the motor system are used to achieve semi magnetic shielding and/or higher magnetic flux density in the air gap. The bucking magnet must repel the motor system - this is important. However, when it comes close to the back plate of the motor system it will catch, so mind your fingers. Use a 2-component adhesive intended for ceramics and metal. Drops of super glue may be used to fix the magnet while the adhesive hardens.
Attention: Mind your fingers when handling magnets!

Part no.	Dimensions [mm]	Net weight [kg]
107001	90 x 42 x 17	0.4
107002	102 x 51 x 18	0.53
107003	102 x 57 x 24 (two 12 mm magnets glued together)	0.65
107004	110 x 45 x 18	0.69
107005	121 x 57 x 24	1.02

- All magnets are magnetized in the symmetry axis direction.
Optimum magnets for semi shielding Model Magnet part no. Increase in Bl 3 Gauss limit [mm]*

Model	Magnet part no.	Increase in Bl	3 Gauss limit [mm]*
15W (large motor) 18W (Revelator)	107003	3 %	195
18W (older type)	107002	3 %	195
21W 25W	107004	3.5 %	195

* Measured radially from the centre axis of the motor system.