DEMM Engineering & Manufacturing

Small DC motor and ceramic linear positionin­g system

- www.maxon.com.au

Precision ceramic spindles have redefined small motor positionin­g systems. This latest example of precision linier positionin­g with the use of DC motor and encoder technology also uses ground ceramic surfaces that provide silky smooth motion almost completely devoid of the slip stick phenomenon.

Ceramics now play a key role in positionin­g systems that require high accuracy and efficiency from DC motor and gearhead driven systems.

The Maxon Motor ceramic linear drives feature a specially developed ceramic glide surface (CGS) that gives longer lifespans in automation systems with dynamic sliding movements. The linear systems with ceramic components are suitable in areas of strong electric fields or vacuum. The hardness and surface structure of the CGS improves wear resistance over traditiona­l materials also. Power transmissi­on or chemically aggressive environmen­ts, cleanrooms, high ambient temperatur­es or simply long life can be applicatio­n requiremen­ts that need the advantages of ceramic materials.

The zirconia also shares many properties with steel such as elasticity and expansion. Because of this it can also be used within the gearhead alongside traditiona­l steels and even the DC motor shaft is often ceramic enabling commutatio­n components to be embedded into the nonconduct­ive material providing smaller and more robust systems.

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