Information presented in this brochure is for informational purposes only. Link Engineering Company reserves the right to make changes, alterations and substitutions to the machines, components or other information presented in this brochure without prior notice. For the latest information contact Link Engineering Company. Equipment pictured in this brochure may be shown with safety equipment removed or disabled for purposes of illustration. Equipment must never be operated with safety equipment removed or disabled.
For more information on this product and how it can be configured to meet your requirements contact LINK at +1 (734) 453-0800 or sales@linkeng.com
Information presented in this brochure is for informational purposes only. Link Engineering Company reserves the right to make changes, alterations and substitutions to the machines, components or other information presented in this brochure without prior notice. For the latest information contact Link Engineering Company. Equipment pictured in this brochure may be shown with safety equipment removed or disabled for purposes of illustration. Equipment must never be operated with safety equipment removed or disabled.

Digital Squareness Under Load Unit                For Link T4 and EL4 Spring Testers

System Features
  • 1500 ppr rotary encoders
  • Gimbaled platen on roller bearings

The new LINK Digital Squareness Under Load unit allows compression springs to be tested for “Squareness Under Load” at a designated test height or load.


The Digital SUL unit consists of a platform that is gimbaled on roller bearings. As the spring is compressed the lower end of the spring and the platen are free to rotate to a static, unsquare position. The two rotary encoders on the Digital SUL provide a signal to the Model 3700 Display Module which calculates and displays the resultant angle.

This devise can be installed on the Link Model T4B or EL4 Spring Tester. It can replace existing LINK SUL units to enable squareness data to be uploaded to a computer via the Model 3700 Display Module.


Digital Squareness Under Load Unit                For Link T4 and EL4 Spring Testers

Typical Specifications
Transducer 1500 ppr rotary encoder (2)
Platen Size 76.2 mm (3 inch)


For more information on this product and how it can be configured to meet your requirements contact LINK at +1 (734) 453-0800 or sales@linkeng.com
Information presented in this brochure is for informational purposes only. Link Engineering Company reserves the right to make changes, alterations and substitutions to the machines, components or other information presented in this brochure without prior notice. For the latest information contact Link Engineering Company. Equipment pictured in this brochure may be shown with safety equipment removed or disabled for purposes of illustration. Equipment must never be operated with safety equipment removed or disabled.