Regal Beloit is now Regal Rexnord. Click here to learn more.

Coupling FAQs

TECHNOLOGICAL LEADERSHIP IN THE COUPLING INDUSTRY

 

With the advent of new materials, manufacturing techniques and analysis tools, flexible couplings for industrial applications have advanced greatly since their invention in the early 20th century.

 

In order to decrease the time required to specify a coupling for an application, significant analysis is devoted to determining ratings for standardized sizes.

 

While couplings are designed for infinite life, they must be operated within their intended design limits in order to achieve optimal performance.                                                    



 

Regularly scheduled inspections, preventative maintenance and condition monitoring can assist in the early identification of potential problems, preventing damage to the coupling and connected equipment. There are a number of maintenance strategies that can be used to identify and prevent coupling failures and each methodology comes with pros and cons. The best strategy for an auxiliary pump will differ significantly from that of a 50,000 HP steam turbine compressor train.

 

Unplanned outages due to mechanical failures can cost millions of dollars of lost production time to Oil and Gas companies. While it’s difficult to quantify the cost of unplanned downtime, an outage of a single day may exceed ~$6.5M, for the average U.S. refinery. The shift from Reactive Maintenance (RM) to data driven Proactive Maintenance (PAM) strategies can not only reduce lost revenue from unplanned outages but reduce the overall costs associated with operating and maintaining plant equipment by 60%.



 

The Modified Goodman Diagram or similar fatigue diagram, is used to determine if the coupling can achieve infinite life when selecting a coupling for an application. The theoretical constant (torque, centrifugal, and axial misalignment) and alternating (angular misalignment and torsional oscillations) stresses, are quantified and plotted against each other. If the coupling is operated below the safe working stress line after the required Factor of Safety has been applied, the coupling can theoretically achieve infinite life.

 

While still used in many applications, the primary choice for turbo machinery applications used to be a gear coupling. With the advances in turbo machinery technology, increased power and speed led to problems meeting balance requirements and ensuring extended service life with these designs. Today, new applications will almost always use a non-lubricated disc or diaphragm coupling which is a non-wearing mechanically flexible design and offers improved dynamic stability.

This name is used, please enter another
{0} was created successfully.
{0} was deleted successfully.
New password and confirm password do not match.
The password entered does not comply with our password policy. Please try again.
The password entered does not comply with our password policy. Please try again.
You have already access to entered account.
Account already added
Please select an account
The entered account number is not valid or the account is not yet transitioned for use at Regalrexnord.com.
You must provide a valid account number to be added. Please contact your Sales Representative or Account Administrator if you don’t know your Account Number.
Please select Additional Access checkbox.
Please enter your address.
Please enter your address cont.
Please check to agree with Terms of Use and Privacy Policy.
Please enter your city.
Please enter your company name.
Please enter confirm password.
Please select your country.
Please enter a valid format for your email address.
Email address required
Please enter your email address.
Please enter your first name.
Please review and select a warehouse for Catalog/Part Numbers: {0}
Please enter your job title.
Please enter your last name.
The current password entered does not match your password or new password is the same like one of the previous or password changed last 30 days.
Profile updated successfully.
Error while request access.
Registration Information has been received.   Thank you for your interest in Regal Rexnord.
Please enter new password.
Please enter old password.
Please enter a valid format for your phone number.
Please enter your phone number.
Please enter a valid format for your extension.
Please select at least one product category.
Please verify you are not a robot.
Registration Information has been received.   Thank you for your interest in Regal Rexnord.
You must provide the name of a Regal Rexnord employee who can confirm your need for access to Genteq technical documents.
Please select your state.
This email is already in use. Please log in.
You do not have permission to access this page.
Confirmation code has been sent successfully to your new email address. Please enter the Confirmation code and update the profile.
Email Address has been changed successfully. Please check your email for information to login again.
Verification code required
Please enter your zip code.
Your session has timed out. You must log in again to access secure content. Any work on the current page will be lost.
Your shopping cart qualifies for free shipping.
Minimum order quantity is {0} {1}. Please enter a valid quantity for item: {2} .
Item must be ordered in multiples of {0} {1}. Please enter a valid quantity for item: {2} .
Add {0} more to your cart to qualify for free shipping.
Item {1} has been removed from cart.
Add {0} more to qualify for free shipping.
This item is discontinued, but you may order against the remaining inventory. You have requested {4} items of the total remaining quantity of {2}.
The following item(s) have been added to your cart: {0}
Request of quotes should allow items in same segment
Uploaded file is not supported, File upload supports word, excel and pdf.
File too Big, please select a file less than 20mb
The item you have entered have no business segment.
The item {1} allow maximum {0} quantity.
The item {1} requires a minimum of {0} quantity.
Please enter Required Specifications.
Error submitting request.
Your request has been submitted successfully.
Please enter valid product.
The item {1} must be in multiples of {0} quantity.
The {0} you have entered was not found. Please revise.
File size requires longer download time
File is not found. Please try again or contact customer service.
Sorry, at this time this product does not comply with the standards of the country you selected.
This product complies with the standards of the country you selected.
The account you are currently on does not have access to purchase this product. Please change to your {0} account to purchase.
The following item(s) have been moved to {0}: {1}
Quantities over {0} may require additional lead time. A Regal representative will contact you if this occurs.
You can only order in multiples of {0}. Please enter a valid quantity for this item.
You have no products selected for comparison. Please select at least two products to compare using the 'Add to Compare' checkbox found on product list pages or product detail pages.
Sorry, this item is no longer available.
POPULAR
Discontinued
Available warehouses not found.
The item requires a minimum order of {0} pieces.
The item requires a minimum order of {0} {1}.
The item must be ordered in multiplies of {0} pieces.
The item must be ordered in multiples of {0} {1}.