White Papers


Whitepapers, Articles and Power Transmission Tips from our Engineers

How Green is Your Gearbox?

This paper will provide recommendations and ideas for obtaining a highly efficient gearbox while still taking into consideration application constraints.


The Dynamic Simulation and Analysis of a Cycloidal Speed Reducer

In industry, digital prototyping has become a valuable tool for the design and subsequent analysis of components for a proposed design. It is not common to find dynamic examples of the operation of a cycloidal type speed reducer where the kinematics of the reduction mechanism is completely different from that of the traditional involute gearing. The paper explores a method of dynamically simulating a cycloidal type speed reducer where the generated internal loads are used to assess the stresses acting on the one of the major reduction components contained within the cycloid disc.


Gearbox Lubrication and Efficiency

Can lubricants improve gearbox efficiencies?  This paper will explore how oil selection can affect gearbox efficiency.


Lubrication Technology

This paper provides basic lubrication information for industrial gearbox oils and examples of specific recommendations for Sumitomo Drive Technologies' products. Basic properties, terms from specification sheets and maintenance information are also included.


Tips to Maximize the Life Expectancy of Your Gearbox

In this article we will provide a few tips to extend the time between the major life periods of the average gearbox. There may be significant differences between new, broken and rebuilt gearboxes, but they all have certain maintenance requirements in common.


Torque Arm Design Considerations for Shaft-Mounted Reducers

This paper provides some design guidelines for torque arm applications in shaft mounted speed reducers.


Role of Gearmotors in Automotive Manufacturing

This paper will review ways in maintaining and managing automotive equipment for trouble-free operation.


Aerator Input Requirements

Considerations for Aerator Applications in the Wastewater Treatment Industry.


Maintenance Guild 2007

Sumitomo Drive Technologies' 2007 Maintenance Guild Technical Article on "Roll Drive Design Considerations for Steel Mill Rolling Operations".


AGMA Technical Paper - October 2008

Methodology for Identifying Defective Cycloidal Reduction Components Using Vibration Analysis and Techniques


Designing for Static and Dynamic Loading of Gear Reducer Housing with FEA

Sumitomo Drive Technologies is working on a design of the alignment free system by using Finite Element Analysis (FEA) to help guide the design process.


FMEA to Wastewater Aerator Drives

The goal of this analysis is to provide a technical understanding of the cause(s) of failure, its consequences, and a means to correct any problems with the gearbox - real or perceived in WWT Aerator Drives.


Reducer Shaft Mounting Systems

Learn about the different methods of shaft-mounting a reducer that include keyed, splined, taper grip bushing, shrink disc and rigid coupling.


Sumitomo Centrifuge Drives

Sumitomo's Cyclo Centrifuge Drives are used to separate liquids from solids through either a decanter or screen centrifuge


How Does Your Gearbox Sound?

Sound can be a very subjective thing. What may sound “unusual” to one individual may very well sound “normal” to another. As a method of diagnosing a potential problem with a gearbox or gearmotor, the sound coming from it should not solely be relied on to determine whether a problem exists. 


Gearbox for Mixer Applications

Selecting the right gearbox for your mixer application is important - especially when it is also the key support between the impeller shaft and the motor.


Gearbox Service Factors for Overhead Cranes

One of the most cricical aspects to consider when sizing and selecting a gearbox is the required service factor.  Learn how to determine the proper service factor for overhead crane applications.


Dynamic Analysis of a Cycloidal Gearbox Using Finite Element Method

This paper discusses the stress distribution, modeled in a dynamic simulation environment, on the rotating parts of Cycloidal reducer. A three dimensional finite element model is developed using Algor FEA commercial code to simulate the combined effect of external loading and dynamic as well as inertial forces on one--cycloid disc system.




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