Longer life with new gen­er­a­tion FAG Plum­mer Block Hous­ing SNS

DEMM Engineering & Manufacturing - - BEARINGS & LUBRICANTS -

A new gen­er­a­tion of large- size bear­ing hous­ings be­ing in­tro­duced to Aus­trala­sia by Scha­ef­fler is en­gi­neered to in­crease the life of fitted spher­i­cal roller bear­ings by up to 50 per­cent com­pared to con­ven­tional plum­mer block hous­ings.

The FAG Plum­mer Block Hous­ing SNS – for shafts from 115 mm to 530 mm and from 4 7/16 inch to 19 1/2 inch di­am­e­ter – is de­signed to re­duce the to­tal cost of own­er­ship of in­dus­trial ma­chin­ery widely used in Aus­tralia and New Zealand, in­clud­ing ma­chin­ery op­er­at­ing in ag­gres­sive en­vi­ron­ments.

The rad­i­cally ex­tended life­span is made pos­si­ble by the in­no­va­tive hous­ing de­sign, which en­sures op­ti­mum load dis­tri­bu­tion in the bear­ing, says, Scha­ef­fler Aus­tralia Pty Ltd In­dus­trial Sec­tor and Prod­uct Man­ager Martin Grosvenor.

The new SNS hous­ing de­sign dis­trib­utes loads more evenly in the rolling bear­ing, ex­tend­ing the op­er­at­ing life of the bear­ing (LEFT), while mount­ing, lu­bri­ca­tion and con­di­tion mon­i­tor­ing are made much eas­ier by nu­mer­ous de­tails of the new hous­ing de­sign.

The hous­ing also pro­vides a very high seal­ing ac­tion against the ingress of con­tam­i­na­tion un­der ex­treme en­vi­ron­men­tal con­di­tions, mak­ing it suit­able for use in ag­gres­sive en­vi­ron­ments com­monly en­coun­tered in in­dus­try.

Dif­fer­ent seal­ing vari­ants al­low­ing match­ing of the SNS to spe­cific en­vi­ron­ments with par­tic­u­larly harsh con­tam­i­nant and dust con­di­tions. An ax­ial lu­bri­ca­tion groove in the up­per sec­tion of the hous­ing en­sures op­ti­mum lubri­cant sup­ply for bear­ings in ev­ery bear­ing po­si­tion (for ex­am­ple, us­ing FAG CON­CEPT 8 com­pact lu­bri­ca­tion sys­tem for grease and oil).

The de­sign also in­te­grates good anti- cor­ro­sion char­ac­ter­is­tics and re­duced clean­ing re­quire­ments, due to in­clined run- off ar­eas as well as a pro­ject­ing up­per hous­ing sec­tion.

Th­ese qual­i­ties – com­bined with In­creased strength and shock re­sis­tance due to the use of (EN- GJS- 400) spher­oidal graphite cast iron as stan­dard – make the SNS par­tic­u­larly suited to ap­pli­ca­tions in such in­dus­tries as min­ing and en­ergy, oil and gas pro­cess­ing, ma­te­ri­als han­dling (in­clud­ing port loader fa­cil­i­ties), man­u­fac­tur­ing and steel, pri­mary prod­uct and food and bev­er­age pro­cess­ing, pulp, pa­per, pack­ag­ing and forestry, and ma­jor in­fras­truc­ture and water and waste water plants.

Fur­ther high­lights of the SNS in­clude:

• 100 per­cent in­ter­change­able with con­ven­tional so­lu­tions.

• Easy and pre­cise mount­ing due to lo­cat­ing sur­faces that are re­worked by ma­chine and align­ment marks.

• Pre­de­fined mount­ing posi­tons for con­di­tion mon­i­tor­ing tech­nol­ogy (for ex­am­ple, FAG SmartCheck for vi­bra­tion di­ag­no­sis in real time).

• Grease out­let holes sup­plied as stan­dard to sim­plify main­te­nance

• Suit­able for stan­dard un-split spher­i­cal roller size range 115mm to 530mm, 4-7/16” to 19 ½”, in­clud­ing Scha­ef­fler’s pre­mium per­for­mance X-life class of spher­i­cal roller bear­ings.

• Also suit­able for Scha­ef­fler’s unique eas­ily in­stalled split spher­i­cal roller bear­ing, size range 150mm up to 410mm, 5-15/16” to 16”.

• Plum­mer block hous­ings of se­ries SNS are suit­able for spher­i­cal roller bear­ing se­ries 222, 223, 230, 231, 232 and 240. “The fo­cus dur­ing de­vel­op­ment of the new SNS plum­mer block hous­ing was on com­pli­ance with cus­tomer and ap­pli­ca­tion-spe­cific re­quire­ments,” says Grosvenor. “Cri­te­ria such as in­creas­ing ef­fi­ciency, ro­bust­ness and im­proved con­di­tion mon­i­tor­ing played a ma­jor role.”

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