MechChem Africa November-December 2020

⎪ Power transmission, bearings, bushes and seals ⎪

Garlock bearing isolators for exceptional bearing protection BMG’s range of Garlock Klozure ® bearing isolators offers dependable protection for pumps, electric motors, gear boxes, fans and other bearing-supported industrial equipment used in harsh applications. G arlock Klozure bearing isolators, with an engineered labyrinth design, have been developed to retain bearing lubrication to IP

66 ratings, preventing contaminants such as moisture, dust and dirt from penetrating the primary seal or bearing houses. BMG specialists recommend the use of Garlock Klozure bearing isolators as an ef- ficient alternative to conventional radial lip seals for bearing protection. “Traditional radial lip seals –whichareuni- directional seals that require professional in- stallation– simply cannot offer the necessary bearing protection performance required in harsh conditions and do not ensure extended service life provided by bearing isolators,” explainsWayne Holton, BMG’s business unit manager,Bearings,SealsandGasketsdivision. “Notable features of BMG’s Garlock Klozure bearing isolators include advanced labyrinth technology, encompassing non-contact seals with nowear components, which ensure long service life and reduced drag on the shaft for lower power consumption. “Common industry challenges include premature bearing damage, which shortens the mean time between failure (MTBF); and theingressofcontaminationsuchasmoisture, dust and dirt into the bearing housing, which

BMG’s Garlock Klozure ® bearing isolators are an efficient alternative to conventional radial lip seals. They offer dependable protection for pumps, electric motors, gear boxes, fans and other bearing-supported industrial equipment used in harsh applications.

A patented PTFE unitising ring – which is a machined component with tight tolerance tomaintain a labyrinth – eliminatesmetal-to- metal contact between the rotor and stator. In conventional systems, simple O-ring designs lack axial reinforcement, which means rota- tion and misalignment between the rotor and stator during normal operation cause the O-ring to shredandmetal shavings todamage the expensive bearings. Unlike radial lip seals, Garlock bearing isolators require no repairs for shaft groov- ing or for seal housings. Bearing isolators are also compliantwithglobal safety and industry manufacturing standards. BMG’s comprehensive range of Garlock seals and sealingproducts, withauser-friend- ly design and advanced materials, ensure dependable sealing in all industrial sectors, including chemical and petrochemical, pulp and paper, power generation, electronics, food and pharmaceuticals, as well as steel mills, mining and OEMs. AllGarlockcomponentsundergostringent field and in-house testing to ensure safe and reliable use, aswell as extended service life in all applications. The BMG team is also avail- able to assist industry with the correct selec- tion of seals and gaskets, to ensure optimum safety, reliable fluid sealing solutions and optimum care for the environment. www.bmgworld.net

causes seal degradation and thus leakage. This poses a safety hazard and could also be harmful to the environment,” Holton says. Shaft grooving fromconventional lip seals is not only costly to repair, but this damage also decreases MTBF. “Bearing isolators, which offer consistent sealing performance, play an important role in protecting bearings to prevent downtime and extend service life, even in arduous operating conditions.” BMG’s Garlock GUARDIAN™ metallic bearing isolators provide bidirectional seal- ing, offering both ingress and egress protec- tion and are suitable for electric motors, pumps, gearboxes and plummer blocks being used in dirty, dusty and wet environments. These robust bearing isolators have a pat- ented cam-lock system, with excellent bore retention, comparedwith standard bearing isolator designs. GUARDIAN bearing isolators with a bronzerotorandstatorareavailableforshaft sizes of between .625" and 22.250". This system has been designed for easy installation by hand,

without the need for an arbor press or special tools, which can gener- ate bronze shav- ings that cause bore scoring.

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