4 Considerations when Replacing an Obsolete Gearbox
Replacement of a failed gearbox can be straightforward if the original manufacturer still offers the product you need. In some applications, equipment can outlast the manufacturer of the gearbox. When this happens, procuring a replacement can be challenging.
Here are four factors to consider when replacing your gearbox:
1. Fitment
Many older gearboxes have a different mounting footprint than new designs. An adapter plate or other physical mounting modifications may be required to use the replacement gearbox on existing equipment.
The gearbox input and/or output shaft diameter used on the older gearbox may not be a standard offering for the replacement gearbox. Some manufacturers offer modifications to standard products, while others do not. Confirm the required interface dimensions, and be sure the application can accommodate the new product if it differs from what was previously used.
2. Capability
Advancements in design, materials, and lubrication have led to increases in gearbox capability over the years. A smaller gearbox can sometimes be specified to meet the torque and power requirements of the application. This can be desirable from a cost perspective, but the effect on interface must be considered. Similarly, using the same size gearbox may provide more torque capability than the older gearbox. This may not always be desirable; if the application cannot handle the extra power/torque provided by the new gearbox, there may be negative consequences.
3. Lubrication
Most new gearboxes utilize some type of synthetic oil as a standard, to support modern power and torque ratings. This may differ from the replaced gearbox; and is especially important to consider for worm gear speed reducers, as most new product lines utilize a PAG-based synthetic oil that is not compatible with mineral oils or PAO-based synthetic oils. Lubrication concerns should be discussed with the manufacturer of the new gearbox.
4. Changing Requirements
Consider why the older gearbox must be replaced. If it has failed, it may be that the gearbox has simply worn out – nothing lasts forever. However, if something about how the gearbox is being used was somehow incorrect or has changed, a drop-in replacement may not work for as long as desired. If there has been a change in performance requirements, a 1-for-1 replacement of the failed gearbox may not restore the equipment to working order for very long. The chosen replacement should fit the application, and if the application has changed the gearbox may need to as well.
In summary, replacing an obsolete gearbox requires careful consideration of several key factors. Ensuring proper fitment, understanding the capabilities of modern gearboxes, acknowledging lubrication differences, and assessing any changing requirements are essential steps in making a successful replacement. By taking a thorough approach, you can ensure that your equipment operates efficiently and reliably after the replacement.
For more information on gearbox selection and applications, get in touch with the gearbox experts at Winsmith.
About Winsmith
Founded in 1901, Winsmith (www.winsmith.com) produces custom reliable, high-quality solutions with millions of product configurations at US facilities in Springville, NY, Flowery Branch, GA and Asheville, NC. Winsmith designs and creates gearboxes to exceed the highest industry standards with our exceptional team of engineers, technicians and experts who drive our mission to deliver gearing solutions. Winsmith is a business of HBD Industries, Inc.