Sealmaster® Cooling Tower Bearings Solution

Vertical shaft cooling tower fan applications can be problematic for bearings due to moisture condensation running down the shaft and collecting on top of the bearing. Typically bearing inserts are recessed within the casting where moisture can tend to pool and collect. Over time, the moisture may work past the seals and flow into the bearing cavity, which may cause poor lubrication conditions leading to wear and/or corrosion. Another issue with a bearing mounted in a vertical shaft orientation is grease slumping to the bottom and being prone to purge out. This may lead to low grease fill levels, which can impact lubrication within the bearing.

Sealmaster® Solution

Regal has several specialized Sealmaster® bearings designed for cooling tower applications. These bearings have a shield which is pressed onto the inner ring of the bearing to act as an umbrella. In order for this concept to work, special casting designs are used to prevent contact of the shield and casting (this shield will not fit on standard product).


Bearings mounted in a vertical shaft orientation in HVAC application.

Solution Type

Performance Efficiency

Design for Application

Key Customer needs and benefits

  • Lithium complex grease with improved water washout to most conventional grease
  • Wide outer ring for increased grease capacity
  • Lock pin and dimple to provide anti-rotation of bearing insert in housing and a direct lubrication path from the grease fitting into the bearing cavity

Sealmaster® Cooling Tower Bearings


  • Duty: Standard
  • Rolling Elements: Ball
  • Housing: Cast iron pillow block
  • Self Alignment: ±2 Degrees
  • Lock: Setscrew
  • Seal: Spring loaded contact (bottom side) and single-lip contact (top side)
  • Temperature: -20˚ F to 220˚ F


  • Rotating metal rain shield to deflect moisture
  • Spring loaded contact seal on bottom to better retain grease in bearing
  • Air handling housing fit allows the bearing to properly self-align
 Part ID Bore   A  CMin  CMax  D  G  J  K  Bolt Size  Comments
 S-2116-M15  15/16  1 7/16  5  3 13/16  4 3/16  1 1/4  3/8  2 13/16  1 13/32  13/16  3/8  Grease Fitting
 S-2116-M16  1  Grease Fitting
 S-3774-M16  1  No Grease Fitting
 S-4821-M16  1  PN Gold™ Insert
 S-2119-M18  1 1/8  1 11/16  6  4 7/16  4 13/16  1 3/8  7/16  3 3/8  1 9/16  7/8  1/2  Grease Fitting
 S-2119-M19  1 3/16  Grease Fitting
 S-2119-MB19  1 3/16  90° Grease Fitting

All dimensions are in inches. For made-to-order special options (minimums apply) and bearing housing styles/shaft sizes not listed here, please contact us.



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
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.
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.
You must provide the name of a Regal Beloit 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.
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.
Add {0} more to your cart to qualify for free shipping.
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 items have been added to your cart: {0}