Main­te­nance made eas­ier by us­ing the cor­rect tools

DEMM Engineering & Manufacturing - - MAINTENANCE MATTERS -

Shaft mis­align­ment is iden­ti­fied as the root cause for up to 50 per­cent of all costs re­lated to ro­tat­ing ma­chin­ery break­downs and un­planned down­time while in­dus­tries face chal­leng­ing de­mands of in­creased ma­chine re­li­a­bil­ity and re­duced energy con­sump­tion to op­ti­mize ma­chin­ery.

Tra­di­tional meth­ods of dial in­di­ca­tors and straight edges can pro­vide good align­ment, how­ever these meth­ods can re­quire a high level of skill and train­ing to achieve good align­ment. The in­tro­duc­tion of laser align­ment tools with in­tu­itive user in­ter­faces has made ac­cu­rate align­ment of shafts quicker and eas­ier for main­te­nance staff to use and achieve. Where down­time costs are high, ev­ery minute of main­te­nance can be costly. How­ever, fail­ing to prop­erly align equip­ment can be equally costly through in­ef­fi­ciency, in­creased bear­ing load­ing and pre­ma­ture fail­ures.

What is shaft mis­align­ment? Ma­chin­ery align­ment needs to be checked in both the hor­i­zon­tal and ver­ti­cal plane as mis­align­ment can be a re­sult of par­al­lel or an­gu­lar mis­align­ment, or a com­bi­na­tion of both. Ma­chin­ery can be easily po­si­tioned ver­ti­cally us­ing pre­ci­sion shims, how­ever po­si­tion­ing in the hor­i­zon­tal di­rec­tion is less con­trol­lable and can take time.

Hor­i­zon­tal ad­just­ment

The SKF hor­i­zon­tal ad­just­ment tool, TMAH se­ries, helps achieve a pre­cise and con­trol­lable hor­i­zon­tal ad­just­ment us­ing a spe­cial ec­cen­tric socket ar­range­ment that en­ables ro­tary move­ment to be trans­lated to lin­ear move­ment at the mo­tor foot. This makes the use of heavy ham­mers, pry or crow bars no longer nec­es­sary to move the mo­tor, mak­ing the ad­just­ment eas­ier and safer. Welded jack-bolt as­sem­blies are a com­mon fea­ture on many in­dus­trial sites how­ever they can be­come easily dam­aged, rusted or seized.

The use of the TMAH ad­just­ment tool is avail­able to suit a wide range of met­ric bolt head sizes, mak­ing it suit­able for many dif­fer­ent types of elec­tric mo­tors and pro­vides quick and easy op­er­a­tion with ac­cu­racy of 25 mi­crons or less, suit­able for laser align­ment equip­ment ac­cu­racy, vir­tu­ally elim­i­nat­ing the risk of dam­ag­ing the mo­tor feet.

Ver­ti­cal ad­just­ment

Ac­cu­rate ma­chine ad­just­ment is an es­sen­tial el­e­ment of any align­ment process as well as elim­i­nat­ing soft foot which can lead to dis­torted bear­ing hous­ings and frac­ture of ma­chin­ery. SKF sin­gle slot pre-cut shims are avail­able in five dif­fer­ent di­men­sions and in ten dif­fer­ent thick­nesses with close tol­er­ances for ac­cu­rate align­ment with the thick­ness clearly marked on each shim to make ver­ti­cal po­si­tion­ing easy. Made of high qual­ity stain­less steel (grade 304S31), the SKF shims can be re-used and are easy to fit and to re­move.

SKF have re­leased two new de­vices us­ing mo­bile de­vices to in­tu­itively guide the user through the whole align­ment process. With a fo­cus on the core align­ment tasks, the TKSA 11 is de­signed to be a com­pact and easy-to-use in­stru­ment that re­sults in ac­cu­rate align­ment.

The SKF TKSA 11 is the first in­stru­ment on the mar­ket that uses in­duc­tive prox­im­ity sen­sors, en­abling ac­cu­rate and re­li­able shaft align­ment to be af­ford­able for ev­ery bud­get. Live view of the in­stru­ment and mo­tor po­si­tion makes the mea­sure­ment and hor­i­zon­tal align­ment in­tu­itive and easy.

The TKSA 51 shaft align­ment tool pro­vides high mea­sure­ment f lex­i­bil­ity and per­for­mance suit­able for en­try-level to ex­pert align­ment jobs. De­signed to work with the shaft align­ment for TKSA 51 app on a tablet or smart phone, this in­tu­itive tool is easy to use and re­quires no spe­cial train­ing. The in­cluded ac­ces­sories en­able use of the TKSA 51 for a wide range of align­ment ap­pli­ca­tions, such as mo­tors, drives, fans, pumps, gear­boxes and more. The tool’s mo­bile app in­cludes tu­to­rial videos to show op­er­a­tors how to per­form ac­cu­rate mea­sure­ments.

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