3500 Dairy Chain
Author: Jon Utz
Transporting food carefully is a main priority in the food and beverage industry! Many dairies and bakeries needed to find a solution for handling their cases and racks, so Regal Rexnord took action and developed the industry's first #3500 double flex style chain. Decades of application experience has led to an evolution of the design for superior life. It's what you can't see that counts! Superior heat treatment of the chain components maximizes the service life of the chain.
The edges' inner links are selectively induction-hardened to resist sliding wear, which is the #1 reason these chains need to be replaced. See figure 1.
Figure 1A 
Figure 1B The edges and protruding side-face of the outer sidebars are selectively induction-hardened to resist sliding wear when running in both the straight sections and corner sections of guide tracks. See figure 2.
Figure 2A 
Figure 2B Pins are through-hardened and the surface is additionally circumferentially induction-hardened for maximum fatigue and wear life. The rivets are press fit into the sidebars. The outer sidebars are cupped at the ends to shield the rivet ends from wear.
Solid and split sprockets are available to ensure correct interaction with the Rex chain.
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Jon Utz
Jon is a Manager of Engineering for the Industrial Chain Group at Regal Rexnord. He is a 20-year veteran at Regal Rexnord, after spending 6 years at US Tsubaki. Jon is a graduate of The Ohio State University, with a Bachelor of Science in Agricultural Engineering.