So­lu­tions for elec­tric mo­tors


Im­proved re­li­a­bil­ity and

lower en­ergy con­sump­tion, means find­ing ways to re­duce the to­tal cost of own­er­ship while also com­ply­ing with in­creas­ingly tougher en­vi­ron­men­tal leg­is­la­tion. The chal­lenge is to in­crease mean­time be­tween fail­ures while op­ti­mis­ing en­ergy con­sump­tion over the en­tire life cy­cle of ro­tat­ing as­sets as en­ergy ac­counts for a sig­nif­i­cant por­tion of to­tal mo­tor own­er­ship costs.

In com­mit­ting it­self to ex­cel­lence in prod­ucts and per­for­mance, SKF puts its ex­per­tise ac­quired through years of re­search and com­mit­ment in ev­ery in­dus­trial seg­ment, from au­to­mo­tive to aero­space, from heavy in­dus­try to con­sumer goods. This com­mit­ment is man­i­fested through­out all stages of the man­u­fac­tur­ing cy­cle. From new model devel­op­ment to af­ter-sales ser­vice, SKF pro­vides the high­est lev­els of ex­per­tise, man­u­fac­tur­ing qual­ity and cus­tomer ser­vice – from con­cept to util­i­sa­tion.


For bear­ings, fric­tion loss = en­ergy loss. Com­pared to stan­dard SKF bear­ings, SKF E2 bear­ings cut bear­ing fric­tion losses by 30– 50 per­cent. Com­pared to bear­ings from other man­u­fac­tur­ers, SKF E2 bear­ings can re­duce fric­tion losses even more. In­stalling th­ese bear­ings dur­ing mo­tor re­pairs gives end-users an op­por­tu­nity to save en­ergy – the big­ger the mo­tor, the big­ger the po­ten­tial for sav­ings.

Be­cause lower fric­tion means less heat gen­er­ated in the bear­ing, SKF E2 deep groove ball bear­ings run cooler than con­ven­tional SKF bear­ings. Pre-greased with our own spe­cially de­vel­oped low-fric­tion grease, SKF E2 deep groove ball bear­ings can re­duce the like­li­hood of fu­ture break­downs, boost­ing up­time and process pro­duc­tiv­ity.

All of th­ese fac­tors com­bine to en­able faster mo­tor speeds and longer bear­ing and mo­tor life­cy­cles. Ul­ti­mately, SKF En­ergy Ef­fi­cient deep groove ball bear­ings can boost mo­tor up­time and en­ergy ef­fi­ciency, re­duc­ing main­te­nance, re­pairs and op­er­at­ing costs in the process.


SKF Hy­brid bear­ings com­bine steel rings and rolling el­e­ments of bear­ing grade sil­i­con ni­tride (Si3N4) and are di­men­sion­ally in­ter­change­able with sim­i­larly sized all-steel bear­ings, how­ever they can sub­stan­tially im­prove re­li­a­bil­ity and ro­bust­ness par­tic­u­larly in ap­pli­ca­tions where the bear­ings are of­ten ex­posed to po­ten­tially dam­ag­ing abra­sive par­ti­cles, in­ad­e­quate lu­bri­ca­tion, vi­bra­tion or stray elec­tric cur­rents. Bear­ing grade sil­i­con ni­tride,

an en­gi­neered ceramic ma­te­rial, has a uni­form and clean mi­crostruc­ture, which is ex­tremely hard and tough. The ma­te­rial, which can be used as an in­su­la­tor, is chem­i­cally in­ert. Due to the hard­ness and low den­sity, th­ese bear­ings are able to run at higher speeds and with lower fric­tion than equiv­a­lent steel bear­ings, also re­sult­ing in ex­tended grease life.


Seals have a cru­cial im­pact on sys­tem per­for­mance. Life and re­li­a­bil­ity of what is of­ten con­sid­ered a sim­ple com­po­nent can make all the dif­fer­ence to your prod­ucts and op­er­a­tions. To be ef­fec­tive, in­dus­trial shaft seals should op­er­ate with a min­i­mum of fric­tion and wear, even un­der un­favourable op­er­at­ing con­di­tions.

In or­der to meet the re­quire­ments of a va­ri­ety of dif­fer­ent ap­pli­ca­tions and op­er­at­ing con­di­tions, SKF in­dus­trial shaft seals for ro­tat­ing ma­chine com­po­nents are man­u­fac­tured from many dif­fer­ent de­signs, ma­te­ri­als and ex­e­cu­tions. Each of th­ese de­signs and ma­te­rial com­bi­na­tions has spe­cific prop­er­ties, mak­ing them suit­able for a par­tic­u­lar ap­pli­ca­tion.


SKF Speedi-Sleeve is a well-proven so­lu­tion used to pro­vide an ex­cel­lent sealing sur­face for ra­dial shaft seals, while re­duc­ing the need for costly shaft ma­chin­ing or main­te­nance. Two ver­sions are avail­able: stan­dard for gen­eral pur­pose and SKF Speed­iSleeve Gold with a thin, metal­lic coat­ing for use un­der highly abra­sive con­di­tions.

SKF Speedi-Sleeve com­bines a pro­pri­etary stain­less steel ma­te­rial and man­u­fac­tur­ing process, re­sult­ing in an op­ti­mised seal coun­ter­face that min­imises wear on both the sleeve and sealing lip. If the right size is se­lected, the sleeve will have an ad­e­quate tight it on the shaft and will not re­quire any ad­he­sive. Seal con­tact sur­face is wear re­sis­tant and man­u­fac­tured to min­imise di­rec­tion­al­ity (0° ±0,05) with a fin­ish of Ra 0,25 to 0,5 μm.


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