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Related Concept Videos

Collar Bearings01:23

Collar Bearings

Collar bearings are essential in various machines designed to support axial loads on rotating shafts. Depending on the specific application and requirements, they can be found with single or multiple collars.
Pivot Bearings01:23

Pivot Bearings

In mechanical systems, bearings are crucial in facilitating relative motion between two components while minimizing friction and wear. They help distribute various loads (radial, axial or a combination of both loads) across machinery parts, ensuring smooth and efficient operation.
A pivot bearing is a specialized type of bearing designed to support axial loads on a rotating shaft. The bearing surface, or the pivot, is positioned at the end of a shaft to support the axial thrust. The pivot may...
Bearings: Problem Solving01:24

Bearings: Problem Solving

Understanding the calculations and concepts related to double-collar bearings is essential for engineers and designers to optimize the performance of these components in various applications. By analyzing the bearing under different conditions, one can ensure that it can withstand the forces and moments experienced during operation. This knowledge enables better decision-making when designing and selecting bearings for specific purposes and configurations. Consider a double-collar bearing with...
Bearing Stress01:22

Bearing Stress

Bearing stress refers to the contact pressure between two separate bodies. To visualize this, imagine a bolt thrust through a plate. The bolt applies a force to the plate, which exerts an equal but opposite force back onto the bolt. This force isn't just a singular entity but a compilation of numerous smaller forces distributed across the contact surface between the bolt and the plate.
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by...
Journal Bearings01:23

Journal Bearings

Journal bearings are mechanical components that support and provide lateral stability to rotating shafts and axles. They are crucial in reducing friction, wear, and vibration in machinery such as engines, turbines, and pumps. The principle behind journal bearings is forming a thin lubricant film between the bearing surface and the rotating shaft, which minimizes direct contact and reduces frictional forces.
To better understand the concept of journal bearings, consider a rope winch with dry or...
Abrasion Resistance of Concrete01:23

Abrasion Resistance of Concrete

Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...

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Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

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Same author

Patient-Specific Implants for Focal Cartilage Lesions in The Knee: Implant Survivorship Analysis up to Seven Years Post-Implantation.

Surgical technology international·2020
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CORR Insights®: Does Unicondylar Knee Arthroplasty Affect Tibial Bone Strain? A Paired Cadaveric Comparison of Fixed- and Mobile-bearing Designs.

Clinical orthopaedics and related research·2020
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Capsular Sparing Total Hip Replacement Technique Applied with a Dual-mobility Cup to Reduce Dislocations.

Surgical technology international·2018
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CORR Insights®: Changing Patient Expectations Decreases Length of Stay in an Enhanced Recovery Program for THA.

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Has Health Care Reform Legislation Reduced the Economic Burden of Hospital Readmissions Following Primary Total Joint Arthroplasty?

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Which Clinical and Patient Factors Influence the National Economic Burden of Hospital Readmissions After Total Joint Arthroplasty?

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Related Experiment Video

Updated: Jul 3, 2026

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys
07:12

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys

Published on: September 11, 2018

How do alternative bearing surfaces influence wear behavior?

Ian C Clarke1, Michael T Manley,

  • 1Peterson Research Center, Loma Linda University, Loma Linda, CA, USA.

The Journal of the American Academy of Orthopaedic Surgeons
|August 12, 2008
PubMed
Summary

This study compares bearing options for total joint replacement, highlighting polyethylene

Area of Science:

  • Orthopedic surgery
  • Biomaterials science
  • Wear analysis

Background:

  • Contemporary total joint replacement utilizes metal, ceramic, and polyethylene liners.
  • Each bearing material presents unique design, manufacturing, and surgical placement challenges.
  • Polyethylene liners avoid audible noises and stripe wear but limit femoral head size.

Purpose of the Study:

  • To evaluate the performance and risks associated with different bearing materials in total hip replacement.
  • To analyze wear mechanisms and potential complications of metal-on-metal, ceramic-on-ceramic, and polyethylene bearings.
  • To predict risk-benefit ratios for patients based on laboratory study findings.

Main Methods:

  • Comparative analysis of bearing materials: metal-on-metal, ceramic-on-ceramic, and polyethylene.

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Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants
09:08

Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants

Published on: May 14, 2020

Related Experiment Videos

Last Updated: Jul 3, 2026

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys
07:12

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys

Published on: September 11, 2018

Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants
09:08

Biotribological Testing and Analysis of Articular Cartilage Sliding against Metal for Implants

Published on: May 14, 2020

  • Investigation of wear patterns, including stripe wear and microseparation effects.
  • Assessment of implant performance based on cup design and orientation.

    • Main Results:

    • Hard-on-hard bearings (metal-on-metal, ceramic-on-ceramic) offer low wear but are susceptible to stripe wear from microseparation.
    • Polyethylene liners do not produce stripe wear but have design limitations regarding femoral head size.
    • Alumina-on-alumina bearings currently present the lowest biologic risk.

    Conclusions:

    • Laboratory studies are crucial for isolating performance aspects and predicting patient outcomes in total hip replacement.
    • Material selection involves balancing wear characteristics, design constraints, and biologic risks.
    • Understanding wear mechanisms is key to optimizing bearing choices for total joint arthroplasty.