Mechanical Power Transmission S-Flex Couplings Elastomer Designs 5 www.jbj.co.uk/s-flex-couplings.html Continue to benefit from the characteristics of the S-Flex coupling but for 3 times longer! The new EPDM coupling sleeve element lasts at least 3 times as long as the previous design, saving you valuable downtime opportunity costs and maintenance costs. The newmaterial also provides at least 30% increased torque rating and allows for product downsize in 50%of applications creating an average cost saving of 23 - 33% for sleeve element replacement. Extensive testing performed by the R&D department compared the new and improved EPDM S-Flex Endurance sleeve element material to the previous design and competitor’s similar style couplings. Ultimately the new EPDM S-Flex Endurance material met or exceeded performance in every testing category. Note the performance improvements are for the EPDMmaterial only. The Neoprene and Hytrel types remain unchanged. Elastomer Designs » Lovejoy offers flexible sleeve for S-Flex coupling in three designs: one-piece solid, one-piece split, and two-piece with retaining ring. » The one-piece split design provides solutions for applications with unique requirements where small shaft separations inhibit the installation of a one-piece solid sleeve. » Pre-moulded teeth along the diameter of the sleeve engage with teeth of the coupling flanges. » No clamps or screws are needed to connect the flanges with the flexible sleeve which securely lock together under torque for smooth transmission of power. » Torque is transmitted through shear loading of the sleeve. » All three sleeve materials are highly elastic which permits the S-Flex coupling to protect connected equipment from harmful shock loading, vibration and shaft misalignment. JE, JN, JES, JNS Sleeve Types These sleeves feature a one-piece design moulded in EPDM & Neoprene rubber. In the case of JES & JNS Types, the one-piece design is split to provide for ease of installation and removal. E, NSleeve Types These sleeves feature a two-piece design with retaining ring. The E Type is moulded in EPDM rubber and the N Type is moulded in Neoprene. The two-piece design is ideal for applications where there is difficulty in separating the shafts of the driver and driven. H, HS Sleeve Types These sleeves feature both a one-piece solid (H) and two-piece split (HS) design and are moulded of Hytrel. The sleeves in Hytrel material are designed to transmit power for high torque applications. Because of the design and the properties of the Hytrel moulded sleeve, the H and HS sleeves should not be used as direct replacements for EPDM or Neoprene sleeves, and can only be used with S, TF, or SC flanges. SleeveMaterials EPDM – Unless otherwise specified, S-Flex couplings are supplied with EPDM flexible sleeves. EPDM has good resistance to commonly used chemicals and is generally not affected by dirt or moisture. Colour is black. NEOPRENE – Neoprene provides very good performance characteristics for most applications and offers a very good resistance to chemical and oil conditions. Colour is black with a green dot. HYTREL® – Hytrel is a polyester elastomer designed for high torque and high temperature applications and offers excellent resistance to chemical and oil conditions. Colour is orange. JE and JN Type JES and JNS Type E and N Type H and HS Type #DriveLineHarmony
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