OEM Product Serial Number Validation
- Susanne Nordman
- Sep 17, 2023
- 2 min read
Updated: Jul 24
As part of our quality assurance and to avoid any misrepresentation by those reselling our products, we have implemented a policy of recording and validating serial numbers prior to selling spare parts for our OEM products. This policy is effective as of September 1, 2023, and applies to all our brands' products and services.
In the past, it has been problematic to sell spare parts and troubleshoot machine tools without the serial number and validation in our engineering archives. Our serial number logs date back nearly 50 years for Power-Grip products, over 75 years for Magna-Lock and MagnaLift products, and over 100 years for Arter Precision Grinding Machines. Those serial numbers provide us with direct engineering documentation and support for that item, including spare parts references.
For Magna-Lock USA workholding, if you cannot identify the serial number of your product, such as a chuck, it is possible that the machinery manufacturer may have recorded the serial number when the equipment was first sold. They should be able to supply you with the number if you contact them directly.
For Arter Precision Grinding Machines, the serial number was placed in several areas on the machine, including the nameplate. Those places vary by model. For assistance with finding the serial number on your Arter grinder, click here or contact us directly.
For our MagnaLift and Power-Grip lifting magnets, please visit our resources page on the lift magnet website for more information about the various generations of these products and the continually evolving safety standards.
For items that we have serviced in the past where a serial number could not be found, we stamped the product with a reference number for warranty purposes, noting it in our files. Using that reference number would be acceptable for purchasing spare parts.
Emailing us a photo of the nameplate on the product, if available, or stamped serial number is beneficial but not required. Once you provide the serial number and photos, they will be recorded in our records, and the serial number will be included on your invoice for your reference.
We replace nameplates when servicing our products; however, due to product liability insurance reasons, we are unable to ship replacement nameplates for our products.

If providing a serial number is not possible, spare part purchases for that product may not be returnable or include any warranty. If you are having trouble locating the serial number, please contact our sales team for additional assistance.
Moving forward, our goal is to enhance the branding of our spare parts, providing you with reassurance that you are receiving genuine OEM parts for our products.

Obsidian Manufacturing Industries, Inc. is a Rockford, IL, manufacturing company and is the OEM for Magna-Lock USA workholding, MagnaLift & Power-Grip lift magnets, and Arter Precision Grinding Machines, as well as providing surface grinding services. They are located at 5015 28th Ave. in Rockford, IL, with a phone number of 815-962-8700. Check out more at obsidianmfg.com/brands.
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