DC mo­tors have the force

DEMM Engineering & Manufacturing - - MOTORS & DRIVES -

Ad­vance­ments in brush­less DC mo­tor tech­nol­ogy are trans­form­ing lin­ear ac­tu­a­tion use­ful for en­gi­neers de­sign­ing man­u­fac­tur­ing equip­ment.

Shown (right) is an ex­am­ple of an 8mm di­am­e­ter brush­less DC mo­tor fit­ted with an 8mm di­am­e­ter plan­e­tary gear­head.

The gear­head out­put f lange con­tains not only the stan­dard set of pre­loaded ra­dial ball bear­ings, but also an ad­di­tional set of bear­ings mounted be­tween the ra­dial bear­ings con­fig­ured as an ax­ial thrust block.

By mount­ing the gear­box thrust bear­ings be­tween the ra­dial set, it pro­vides ad­di­tional sep­a­ra­tion and in­creased ra­dial ca­pa­bil­ity. The im­por­tance of this bear­ing sys­tem is in­trin­si­cally re­lated to the shaft.

Close scru­tiny of the shaft on this tiny gear­mo­tor re­veals its true func­tion – lin­ear move­ment. The ce­ramic thread is man­u­fac­tured with tight tol­er­ances on runout and pitch and with ex­tremely smooth sur­faces.

On this ex­am­ple a thread of only 3mm di­am­e­ter pro­vides up to 27N.

Con­tact Maxon Mo­tor Aus­tralia on + 61 2 9476 4777.

Newspapers in English

Newspapers from New Zealand

© PressReader. All rights reserved.