What is a servo gear unit?

Like all gear units, servo gear units serve as converters of torque and speed and are therefore the central component of every servo gearmotor. The special feature of a servo gear unit: Thanks to its high torsional stiffness while maintaining a very low to constant rotational clearance, it enables extremely high acceleration and high torques. Servo gear units are therefore indispensable for plant operators whose applications require high positioning accuracy, short cycle times, exact speeds, high processing speeds, and maximum dynamics.

How do servo gear units work?

A servo gear unit reduces the speed of a motor. It transmits the flow of force in different ways depending on how its gearing and gear unit stages are arranged and operate. The gear ratio i is therefore one of the most important characteristic values of a servo gear unit: It specifies the ratio of the input speed (on the motor side) to the output speed (on the machine side). Low-backlash processing and optimized gearing ensure that the servo gear unit is capable of receiving higher overhung loads than standard gear units and transmitting high acceleration torques at high speeds.

What types of servo gear unit are available?

The primary servo gear units used in industrial drive technology are coaxial gear units/planetary gear units and right-angle gear units/helical-bevel gear units.

• Planetary servo gear units always transmit the flow of force coaxially. In their center, there is a sun gear that turns in the direction of rotation and at the speed of the motor. Three or more planet gears that transmit the received force to the outer annulus gear on the output side rotate around this sun gear. Due to this design, the input shaft and output shaft move in the same direction. That is: They have the same direction of rotation.
• In contrast, the gearing in a helical-bevel servo gear unit diverts the flow of force at a right angle. The input shaft and output shaft are therefore perpendicular to each other and they rotate in opposite directions.

Low-backlash servo gear units from our modular system

Gearmotorer har fremragende egenskaber, som uden tvivl erkraft,dynamik og præcision. Benyt vores modulopbyggede system og overbevis dig selv om de mange forskellige gear- og motorkombinationer inden for servogear-segmentet: Kombiner for eksempel vores servoplanetgear PS.F.. eller PS.C.. med synkrone servomotorer CMP.., asynkrone servomotorer af typen DRL.. eller med DR..-vekselstrømsmotorer. Eller vælg i stedet en variant med vores BS.F-servokeglegear.

Med SEW-EURODRIVE kan du realisere den ideelle gearmotor, der nøjagtigt illustrerer den driftsadfærd, du har brug for til din applikation og dine krav.

• De lille slør-servo-planetgear i vores serier PS.F.. og PS.C.. forener høj præcision med høj effekttæthed og udmærker sig ved en yderst kompakt konstruktion. Dette muliggør en særligt pladsbesparende anvendelse.
• Degearermed lidt vedligeholdelse i serien BS.F. udmærker sig især ved deres lange levetid og fleksibilitet. Et yderligere plus: Deres vridningsslør forbliver konstant gennem hele gearets levetid.