Application Examples: Couplings

Back in July we shared some application examples for linear shafts. The post was wildly popular so we thought we’d share some application examples for couplings. Though couplings are well known and commonly used components in many rotary motion applications, the sheer variety of couplings can make selection rather daunting. While coupling usage is straight forward, most of the design time is spent in selecting the correct coupling type for an application.

Whether you’re building a new machine, or considering making modifications on an existing machine, check out the applications below and see how some industry professionals have applied couplings into their own builds. Though you may need to make adjustments before implementing these into your own designs, you can ensure these applications have already been tested and therefore function reliably.

Jaw Coupling Application

The Jaw Coupling is designed to transmit torque while dampening system vibrations and accommodating misalignment. In this particular example we have a coupling used to connect a motor shaft to the drive roller of a conveyor. The Jaw coupling is a good choice for this application since high accuracy and zero back lash are not requirements. At the same time Jaw couplings have good misalignment characteristics and can transmit high torque.

JawCouplingBlog

Flexible Coupling Application

Flexible couplings are used to transmit torque from one shaft to another when the two shafts are slightly misaligned. In this example, the test fixture is using torque transducer as torque senor for measuring torque. In this example, the flexible couplings are used to connect the motor and torque sensor with the work piece. These two couplings need to minimize any misalignment error since the torque sensor needs to lay as flat as possible. They also need to protect the sensor from overloading. Major characteristic of the flex couplings are very low or zero backlash, good torsion rigidity as good lateral and angular misalignment capabilities making them very suitable for this application. Flexible Coupling Disc Coupling Application

By definition, a disc coupling is a high performance motion control (Servo) coupling designed to be the torque transmitting element (by connecting two shafts together) while accommodating for shaft misalignment. It is designed to be flexible, while remaining torsionally strong under high torque loads. In this example, the coupling is used as part of the slide table in the welding station. The coupling connects the servo motor to ball screws that move the work piece table to the required position or positions. The disc coupling used here was recommended to be used with servo motors due to its low backlash, high torsion rigidity, and good allowable misalignment and torque capabilities. Disc CouplingCouplings are standard machine components that require correct selection based on application requirements and user preference, installation and regular inspection.

During operation, the user should watch for external signs such as abnormal noise and vibration that indicate premature coupling failure. This helps with understanding what caused the failure and how and what to correct prior to installing a new coupling. During their life span, couplings should also be checked for signs of wear and fatigue.

For questions or assistance in selecting a coupling please contact the Misumi Engineering Department at engineering@misumiusa.com for assistance with our online configurator for coupling sizing and selection.

Share this Story
Load More Related Articles
Load More By Carlicia Layosa
Load More In Tips & Tricks

4 Comments


  1. Konstantins

    May 24, 2015 at 6:49 am

    One shown is NOT Oldham but one of jaw couplings.

    Reply

  2. cwg999

    July 21, 2016 at 12:05 pm

    We often call Jaw Coupling as “Spider Coupling” Also one type of coupling used commonly in automatic doors, and many other applications is the slip clutch, which acts as a coupling until a certain torque.

    Reply

  3. Cardanshaft manufacturer

    October 25, 2017 at 4:08 am

    Nice blog and very descriptive images.

    Reply

Leave a Reply

Your email address will not be published. Required fields are marked *

*

Check Also

10 Tips About MISUMI’s 10th Edition Mechanical Automation Components Catalog

You asked for it, we answered! The 10th ...

Get articles like this sent to your inbox every week:

Subscribe to our Channel

Follow Me @usa_misumi

Like us on Facebook

FOLLOW @ INSTAGRAM

  • The ultimate guide for engineers. Order your FREE copy today. Link in bio #catalog #engineering #mechanicalengineering #automation #80sextillion
  • Today we celebrate engineers all over the world on #GlobalEngineer Day! According to the 2019 #globalengineersurvey the number one skill engineers need to be successful is, problem solving. MISUMI engineers pride themselves on being great problem solvers! They work with customers every day to solve problems and figure out positive solutions. @discovereorg
  • It’s Spring! #firstdayofspring #springequinox #springs #misumi #80sextillion
  • GIVEAWAY
Calling all engineers! We are giving away a Single Axis Robot worth over $3,700! To enter, follow @misumiusa, like this photo and tag 3 friends in the comments. Winners will be selected at random. Contest ends March 22nd. Good luck! #MISUMIRobot #80Sextilltion #MISUMIUSA #Engineering #design #manufacturing #Robot 
http://pages.misumiusa.com/2019-Instagram-Sweepstakes-Rules.html
  • Celebrating the St. Patrick’s Day spirit at MISUMI! 🍀🍀🍀🍀
  • #TBT to our 2011 catalog compared to our new Mechanical Automation Components Metric Catalog! Swipe for the slow-mo.
  • Happy #InternationalWomensDay from MISUMI
  • The MISUMI University Program in action #MUP #80sextillion #engineering #university