Kill bac­te­ria, not bear­ings

DEMM Engineering & Manufacturing - - FOOD -

Food and bev­er­age pro­duc­ers must take an un­com­pro­mis­ing ap­proach to hy­giene, health and safety as a key foun­da­tion of busi­ness. To ac­com­plish t hese goals, so­lu­tions are needed to match ex­pec­ta­tions while at t he same time re­duc­ing op­er­at­ing costs. SKF’s food l i ne Y-bear­ing units have been de­signed to do just t hat.

The food and bev­er­age i ndus­try is a par­tic­u­larly chal­leng­ing area for ma­chin­ery as pro­duc­tion ar­eas can be hot, cold or hu­mid, or t hey can be chem­i­cally ag­gres­sive due to t he process or strict clean­ing regimes with f re­quent high-pres­sure wash down with caus­tic an­tibac­te­rial cleans­ing agents.

SKF Food Line Y-bear­ing units are hy­gien­i­cally de­signed, sealed and lu­bri­cated for l i fe. The per­for­mance of t hese units i n a wet, abra­sive or wash down en­vi­ron­ment of­fers main­te­nance-f ree op­er­a­tion, sav­ing time, money and i mprov­ing sus­tain­abil­ity.

Stain­less steel bear­ings are f it­ted with 2RF seals which pro­vide an i nno­va­tive, ef­fec­tive, proven multi-bar­rier de­sign t hat pre­vents con­tam­i­na­tion and re­tains t he lu­bri­cant dur­ing high-pres­sure wash downs, keep­ing wa­ter and de­ter­gents out of seal con­tact ar­eas.

Lu­bri­cated for l i fe f rom fac­tory with a high- qual­ity NSF ap­proved SKF food-grade syn­thetic grease, it re­sists washouts even dur­ing f re­quent high-pres­sure wash downs and can be used i n ap­pli­ca­tions where op­er­at­ing tem­per­a­tures range f rom –15 to +120°C.

The com­pos­ite hous­ings are a t her­mo­plas­tic with steel coils em­bed­ded i n t he hous­ing giv­ing a ra­dial break­ing load far greater t han t he static load rat­ing of t he bear­ing, and pos­si­bly t he high­est f rac­ture strength of any com­pos­ite unit avail­able.

A f lat base en­ables t he unit to meet f lush with its mount­ing sur­face, elim­i­nat­ing gaps which oth­er­wise are po­ten­tial ar­eas for bac­te­ria to har­bour and grow, while stain­less steel bolt hole i nserts pro­vide added strength to each hous­ing foot.

To com­ply with health and safety reg­u­la­tions, the com­pos­ite and stain­less steel housed Y-bear­ing units can be supplied with ef­fec­tive end cov­ers. Closed end cov­ers are tested to with­stand a 10 MPa (100 bar) pres­sure wash for com­plete se­cu­rity and op­er­a­tor safety. An op­tional drain hole is part of the end cover de­sign.

The com­mon prac­tice i n wash down en­vi­ron­ments of re­lu­bri­cat­ing bear­ing units f re­quently, of­ten daily, is deemed nec­es­sary to purge wa­ter and con­tam­i­nants. Since SKF Y-bear­ing units re­quire no re-greas­ing, t hey do not dis­charge used grease f rom t he seals. This elim­i­nates a ma­jor source of waste­water con­tam­i­na­tion, re­sult­ing i n a cleaner plant en­vi­ron­ment and lower dis­posal costs for users.

For ex­am­ple, i f a site has 100 bear­ings which are lu­bri­cated on a weekly main­te­nance cy­cle on av­er­age 15g of lu­bri­cant per bear­ing purge, t his equates to: • 1.5 kg per weekly main­te­nance cy­cle • 78 kg of lu­bri­cant per year • 100+ min­utes of labour per main­te­nance cy­cle The cost of main­tain­ing a bear­ing can easily out way t he i ni­tial pur­chase price.

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