Newly Re-designed P-Series Gearbox improves Backlash, Corrosion Resistance and Center Distance between Input and Outputs! 

Planetary Servo Gearboxes

Servo applications have precise positioning requirements that are more difficult to achieve with standard gearboxes. Epicyclic gearboxes are a compact and lightweight alternative to standard gear reducers that are designed to increase torque output in servo systems. Epicyclic gearboxes feature three different gear sets arranged to provide even load distribution. This design allows epicyclic gearboxes to transmit high torque loads while producing minimal backlash for improved positioning accuracy. Servo gearboxes reduce load inertia more efficiently and produce less noise than standard gearboxes. These high-precision servo-reducers also provide the high stiffness needed for frequent starting, stopping, and changes in rotation.

High-Efficiency Servo Gear Reducers

Ondrives.US is your leading resource for high performance, precision-engineered gearboxes. Our internal epicyclic servo gear reducers are available in a range of bore sizes and gear ratios, making it easy to find the right one for your unique motion transfer needs. Order from our in-stock planetary servo reducers, request a quote for a custom servo gearbox or contact Ondrives.US for more information.


Compact Planetary Servo Gear Reducers

Our EHD Series internal epicyclic gearboxes provide exceptional performance in rugged, compact frames. They feature fully machined, aluminum block housings and dual ball bearings on all shafts. These inline planetary servo gear reducers also offer numerous motor mounting options, making them a versatile solution for a range of applications.
EHD planetary servo gear reducers deliver output torques up to 380 Nm. Available in a range of gear ratios from 3:1 to 36:1.

Typical uses for servo gearboxes include high precision, high-speed applications such as:

  • CNC machining
  • Robotics
  • Automated machining
  • Conveyor systems
  • Medical equipment

The Ondrives.US Advantage: Low Backlash Epicyclic Gearboxes

Epicyclic gearboxes from Ondrives.US are engineered to deliver the precise positioning and torque control needed for servo applications.  Features and benefits of our high-precision servo reducers include:
  • Low backlash: ≤30 arc/min at output
  • High efficiency: up to 92% at 1,000 RPM
  • Max. input speed: 3,000 RPM
  • Available gear ratios from 3:1 to 36:1
  • Output torque up to 380 Nm
  • Dual ball bearings on all shafts
  • Machined aluminum block housings
  • Permanently lubricated

Custom Servo Gearboxes Manufactured to Your Exact Specifications

At Ondrives.US, we can assist with designs, modifications, prototypes, and complete production of custom drive components and gears for any application. If your project specifications require custom mechanical components, our engineering team can produce parts and components that match your drawings and meet your performance needs.

Order High-Precision Servo Gearboxes

Ondrives.US manufactures high precision servo reducers and drive components for demanding power transmission applications. Our engineers  Order internal epicyclic gearboxes for your application, request a quote for custom servo gearboxes, or contact us for more information.