Shaft Analysis and Bearing Life Calculations in Rotodynamic Pumps / 1 Hour / October 30, 2025 / Webinar

Shaft Analysis and Bearing Life Calculations in Rotodynamic Pumps

 Date: Thursday, October 30, 2025

Time: 1:00 PM - 2:00 PM ET

  PDH Credits: 1.0 

Overview:

This presentation aims to equip engineers with a comprehensive understanding of shaft stress, shaft stretch, and bearing life calculations in rotodynamic pumps. Attendees will gain fundamental knowledge, including key definitions, equations, and calculation procedures related to shaft behavior and bearing life. The presentation covers the effects of shaft stress and stretch, methods to minimize these forces, and practical insights into calculating L10 bearing life, including adjustments for reliability, material improvements, and lubrication conditions. Additionally, the session will address the significance of pump design, common bearing types, lubrication methods, preload and clearance, dynamic and static load ratings, and calculation factors.

Learning Level – Intermediate:

This level of training is designed for individuals who have some experience and knowledge in the subject matter. It builds upon the foundational concepts and expands the breadth and depth of understanding. Participants develop more advanced skills and competencies.

Audience:

Individuals looking gain in depth technical knowledge or those looking for a refresher on applied fundamentals, including experienced maintenance and operation personnel, pump system designers and owners, technical sales, and engineers.

Learning Objectives: 

• Gain a comprehensive understanding of shaft stress and shaft stretch in rotodynamic pumps, and how to analyze it to improve pump design, operation, reliability, and prevent potential failures.
  
• Describe the different types of stress (shear and torsion) experienced by shafts, the causes and effects, the calculation procedure for determining stress levels, and propose appropriate methods to minimize both shear and torsional stress.
• Acquire knowledge of shaft stretch in vertically suspended pumps, the causes and effects, the calculation procedure, and recommend methods to compensate.
• Acquire knowledge of calculation procedures used in determining basic L10 bearing life and the adjusted L10 life to account for the elasto-hydrodynamic theory of lubrication.
• Learn how to adjust the basic L10 rating life to accommodate different reliability requirements and understand the influence of lubrication film thickness on bearing life, utilizing equations and factors for accuracy.

SKU: LW108C

Registration Fees

Members, Associate Members, Standards Partners, and Training Partners of the Hydraulic Institute (HI) receive 25% discount on all available PSM training. Employees of Members, Associate Members, Standards Partner, and Training Partner organizations must log-in with their company email address in order for the discounted registration fee to apply. Industry Partners and Academic Partners receive 5% discount on all PSM training. Click here to learn more about HI membership.

Membership Question?  Call us at 973-267-9700, email us, or view the HI website for more information.

Group Registration

Group registration discounts are available for webinars. If you are interested in registering a group, please click here to learn about the group registration process. Then, return to this product and click on "REGISTER" to begin the process.

Refunds & Cancellations

All refund requests must be made in writing to training@pumps.org.

Webinar Platform

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Webinar Instructions

1. Click the Contents tab and select "View Webinar".  After the webinar is completed, return to the Contents tab.
2. Click "Complete Quiz for Webinar" to answer quiz questions. You will have 10 attempts and must get at least 80% correct to proceed. After completing the quiz, return to the Contents tab.
3. For webinar series, continue this process until you complete all the webinar sessions.
4. Click "Complete Webinar Survey" to provide your feedback on the webinar to PSM. Scroll down to view all feedback questions as there are questions that expand past the size of the window. 
5. After completing the survey, click the button “View/Print Your Certificate” in the box titled “Claim Credits and Certificate" to save or print your certificate of completion. If you ever lose your certificate, you can come back to the PSM website and view it on your transcript (found in the Dashboard).

Q&A During Webinar: During the Q&A portion of the webinar questions are welcome that relate to the material presented. The instructor will do their best to address them within the context of the training provided. If time does not permit addressing questions received, PSM staff will make our best effort to provide an answer via email.

NOTE: Please note that the instructor is not able to provide consulting advice or interpretations of standards; therefore, these types of questions will not be addressed by the instructor. 

Need Assistance?

If you are experiencing any log in issues, cannot access a course, need assistance claiming credit, or have other questions or concerns, please e-mail training@pumps.org.

PDH Credits

Upon the successful completion of this webinar and passing the required quiz, you will receive a certificate of completion. Note: 1.0 PDHs is equivalent to 0.10 CEUs or 1.0 Contact Hours 

Licensed Professional Engineers

Continuing professional development is a vital component of the engineering licensure process. Most state licensing boards require continuing professional development as a condition for licensure and renewal of the license to practice engineering. The acceptance of continuing education as it applies to fulfillment of the state licensing requirements for professional designations is at the pleasure of the individual state licensing boards. It is the responsibility of the individual participants to be knowledgeable about their state requirements. Pre-approval of training providers and courses is not required by most state licensing boards, except for the following:

Florida Board of Professional Engineers

Pump Systems Matter is a board-approved continuing education provider for the Florida Board of Professional Engineers: License # CEA361.

New York State Board for Engineering, Land Surveying, and Geology

Pump Systems Matter is approved as a sponsor of continuing education for professional engineers in New York State: NYS Sponsor # 241.

Disclaimer: Recording of Webinar

By participating in this webinar hosted by the Hydraulic Institute (HI) and Pump Systems Matter (PSM) you automatically agree to authorize recording of audio and or visual content presented during the live session and consent to subsequent use of the recording by HI and PSM unless otherwise stated. The audio and visual recording of the live webinar includes documents and materials exchanged or viewed during the live event; questions asked and poll answers provided by you during the live event; and the chat box transcript. Live webinar recordings are uploaded to the PSM e-Learning library.

By submitting this registration, you consent to having your name or contact information shared with the session speaker(s) and organizer(s).

If you do not consent to the audio and/or video recording of this live webinar or the sharing of your information, please do not join the session and email your concerns to our Customer Support Center.