1. Extended Bushing Barrier Seal The chain bushings are extended beyond the inside sidebars to minimize the clearance between the outside bars and the bushings. This in turn creates a solid physical barrier that effectively obstructs abrasive and/or sticky material from entering and/or residing in the critical pin/bushing area. 2. Polymer Wide Face Seal Constructed of a high temperature engineered polymer, this seal encircles and resides on the outer race of the extended bushing. Upon assembly, this seal is compressed between the inner and outer side plates to engage a second barrier of protection for the critical pin/bush area. Tsubaki maintains a well-diversified portfolio of polymeric options that can accommodate temperatures up to 400 degrees Fahrenheit. Please contact Tsubaki Engineering for further assistance in selecting the correct material for your application. 3. Stainless Steel Internal Ring/Labyrinth Seal This patented seal holds tight to the pin and rotates freely within a specially machined groove in the bushing, creating an intricate internal labyrinth that successfully hinders the progression of aggressive fine particulate within the bearing area. Understanding the SJ3’s Unique Labyrinth Structure - Three Distinct Seals for Ultimate Protection
Tsubaki’s SJ3 technology has demonstrated outstanding performance in demanding environments including:
Pet Coke
Gypsum
Clay
Coal
Fly Ash
Cement/Clinker
Potash & Fertilizers
Grain & Seeds
Sugar/Baggasse
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