Shop Talk Blog

The Official Blog for Texas Final Drive

Catastrophic Failure: Why Gear Oil Maintenance is So Important

What does catastrophic failure caused by a lack of maintenance look like? Let’s look at an example: a totaled planetary on a John Deere 332 final drive.




Here are some other Shop Talk Blog posts that might be helpful:

Dr Mac’s Notebook: Basic Metal Failure

by Dr McCaslin | Mar 26, 2023 |

Final Drive Failure

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Failure in a final drive motor is always bad -- but a good understanding of basic metal failure can help understand what causes it and lead to a better understanding of metal behavior in general.

In this Shop Talk blog post, you'll learn about basic metal failure and the material properties that explain it. This includes an introduction to tensile testing, a discussion of key metal parameters, and an example of how these parameters can vary.


Here are two other blogs in this series:

Dr Mac's Notebook: Basics of Mechanical Stress

Dr Mac’s Notebook: Displacement Under a Load

How Many Ways Can an Oil Seal Fail

Oil seals are used on the final drive motor axle to keep the gear oil for the planetary gear set or bearings from mixing with hydraulic oil. These seals are vital to the operation and performance of your final drive motor -- and learning how they can fail is essential.

Dr Mac’s Notebook: Displacement Under a Load

by Dr McCaslin | Jan 11, 2023 |

Final Drive Failure

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In a previous post, we talked about basic mechanical stress -- but this one is going a step further and looking at the relationship between stress, deformation, and strain -- all of which affect how metal parts break.

 


Here are some other Shop Talk Blog posts you might be interested in:

Dr Mac's Notebook: Basics of Mechanical Stress

by Dr McCaslin | Sep 19, 2022 |

Final Drive Failure

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Mechanical stress is behind any of the failures we encounter when inspecting a final drive motor. Sheared fasteners, bent gear teeth, dented roller bearings, and broken races are examples of where stresses have gotten high enough to do permanent damage. To help you learn more about the mechanisms behind this and other types of failure, we'd like to introduce you to a new blog series entitled Dr. Mac's Notebook. 



Here are some other Shop Talk Blog posts you might find of interest:


Simple Forces

There are three basic types of forces:

  • Compressive, which pushes things together
  • Tensile, which pulls things apart
  • Shear, which causes things to slide apart

4 Horrifying Final Drive Failures

Not all final drive motor failures are equal! Some are just horrifying ...


Here are a few other Shop Talk Blog posts you might be interested in:

How to Tell When a Planetary Gear System Needs to be Replaced

The planetary gear system is key to helping your final drive motor generate the torque needed to move your equipment and transport heavy loads. When it goes out, everything literally comes to a grinding halt. Learn the signs of impending planetary gear failure!


Here are a few other Shop Talk Blog posts you might find of interest ...

Hydraulic Contamination Failure Categories: What You Need to Know [Infographic]

by Dr McCaslin | Jun 18, 2020 |

Final Drive Failure, Hydraulic Contamination

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Not all contamination related failures are catastrophic --
but if the symptoms are ignored, they will be!

 


Here are a few other Shop Talk blog posts you might be interested in:

Results of Hydraulic Contamination

Hydraulic contamination is a serious problem for final drive motors, and even more so for newer models that have tighter clearances. In this Shop Talk Blog post, we are going to discuss some of the results of hydraulic contamination and how to prevent them. It's easier than you may think!

 


Here are a few other Shop Talk Blog posts you might enjoy:

Bobcat Final Drive Failures and Case Drain Filters

A good number of the failed Bobcat final drive motors we see come in are related to the case drain filter. Here's why -- and how to keep it from happening to you!

Here are a few other Shop Talk Blog posts you might be interested in:

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