NEW RANGE The new Rexnord RN series metric roller bearings have specially-designed seals reduce contamination and offer extended bearing life
Industrial equipment supplier BMG’s bearings portfolio, which spans precision miniature bearings to giant bearings for steel and mining applications, has been enriched with the addition of the new RN series, launched recently by leading global bearing manufacturer Rexnord.
“What’s impressive about the new RN series, is not only are these the first metric-sized ISO unitised plummer block bearings available locally, but these bearings, with a two-piece outer race, are interchangeable with existing SN500 plummer blocks using 222**KK bearings. For users this means high efficiency, optimum productivity, reduced downtime and a lower total cost of ownership (TCO),” explains BMG bearings division product specialist Gift Davhana.
“The RN series has been designed for dependable performance and extended service life in harsh environments, with extreme contamination and elevated operating temperatures. Typical applications include elevators, screw conveyors, feeder breakers, roll crushers, conveyor pulleys and fans.”
Davhana says that, while there are always price-related pressures in the procurement of engineering components, BMG specialists advise customers to appreciate the value of the investment in quality branded products, to reduce TCO.
The RN series is shaft ready, with preassembled bearing units that eliminate the need to set clearance or add grease. The unitised solid one-piece housing enables effortless replacement of existing bearings. The Shurlok tapered adapter, for easy-on/easy-off shaft mounting, provides quick installation and removal of bearings and delivers the “best-in-class” shaft grip for maintenance-free performance.
Moreover, concentricity is enhanced, which reduces vibration and extends service life. Auxiliary covers provide contamination protection in extreme conditions and also extend bearing life.
“This range has been designed to overcome problems associated with conventional bearings, including premature failure resulting from contamination, improper installation, heavy loading vibration and from mismatched bearings to specific application requirements. Difficult and time-consuming bearing removal and seal replacement are also common problems in the field.”
Notable features of the RN series include an industry-leading misalignment capability of 2º, standard dimensions for quick and easy drop-in replacement and field adjustable clearance to accommodate higher temperatures and higher speeds, for reduced maintenance intervals and longer bearing life.