Caster Mounting – Part 4 – Expanding Adapters

Expanding adapters are a hybrid design, utilizing a threaded stem with a flexible socket adapter.  Typically they are constructed with 4 parts: a threaded stem, a compression nut, a rubber expansion ring, and a plastic washer.  In essence, they are a hybrid of a grip ring and threaded stem.  In as much as they do not require special machining of the equipment, but no socket is required.

Usually, these stems are used on equipment where a standard socket is not available because of the inside diameter of the round tube or pipe.  They are installed by inserting the stem into the pipe and then turning the nut on the bottom side of the swivel section to tighten into place.  A pretty simple installation, which also provides for an equally simple removal.

These stems are not indicated for use on equipment subject to large amounts of moisture and heat, such as wash-down or autoclave situations.  This is because the rubber insert can dry-rot.  Once the rubber has dried out the caster may, for lack of a better phrase, fall out of the equipment.  The exposure to moisture hastens the natural decay of the rubber, therefore failure will be premature.  When considering an expanding stem for an application, consider a grip ring or a threaded stem first if the equipment will be in a wet or rough situation, they typically provide a more positive retention mechanism.

Overall, an expanding adapter provides a flexible alternative to more fixed methods such as grip rings and threaded stems.  Implementing them on equipment can help avoid additional manufacturing or assembly time.  With that in mind, there are some noted limitations, as mentioned previously.  Contact us for help in deciding the correct mounting for your application.

Share us with some friends

Share on facebook
Share on twitter
Share on linkedin
Share on reddit
Share on pinterest
Share on email

Subscribe to get the latest posts delivered

Want to read more?

Increase Efficiencies with Modular Workbenches

Personal workbenches can be a large investment, so it is important to make sure they will remain useful for as long as possible. One way to ensure you get the most use out of your workbenches is to upgrade to a fully modular workbench.

Read More »

Separate Employees and Lift Traffic with Guardrails

Making your workplace a safe environment should always be an ongoing effort to prevent putting your employees at risk. It is especially important to maintain proper safety rules, regulations and guidelines in areas of your facility where employees may encounter lift truck and vehicle traffic.

Read More »

Caster Basics: Rigs

Also called a fork or horn, the rig holds the wheel in place. While that may seem basic, there are many important things to consider when choosing a rig for your casters.

Read More »

Preparing for a Return to Normalcy

The past several months have been filled with uncertainty and, at times, fear. However, the pandemic numbers are beginning to trend in the right direction, states are beginning to open back up, and workers are yearning to get things back to normal in life and in business.

Read More »

Protecting Your Employees with Building Access Cages

The global COVID-19 pandemic has forced many businesses to rethink their policies as to who has access to their building and work areas. While temporarily eliminating cold calls and unscheduled visits may be the norm for many businesses in the current climate, that is not always possible if your company deals with shipping and receiving.

Read More »

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.