 are equipped with main steam cut out valves. During the overhaul of these plants, regardless of whether they are located on submarines, surface crafts, or in industrial complexes, the main steam cut out valves are periodically inspected and repaired to maintain gas tight integrity. Normally, the seal ring bearing areas become defective due to constant operational pressure, thereby requiring a repair to conform them to the manufacturer's operational tolerances. The refurbishment of worn out ring bearing areas is normally performed by the employment of hand tools and/or by removing the valve from the system and repairing it in a shop with stationary shop equipment. The refurbishment of ring bearing areas by the employment of hand tools is slow, tedious, and expensive with the end product being of low quality. The employment of stationary shop equipment requires many extra man-hours to remove and reinstall the valve system. The present invention relates to a sprocket assembly with an adapter.
A sprocket assembly is known, for example, from document EP 1688345 B1. In this instance, the adapter is constructed as a sprocket carrier or “spider” with an inner ring and securing arms which extend radially outwards therefrom for securing one or more sprockets. The inner profile of the adapter formed by the drive elements ensures in this instance both transmission of torque from the sprocket to the driver which is provided with a corresponding outer profile and radial centering of the sprocket assembly on the driver.
This places high demands on the production precision for the adapter, especially since this is preferably constructed to be substantially wider in the axial direction than the sprocket in order to produce a surface-area which transfers the greatest possible force, which in turn makes the correct radial centering more difficult.
On the other hand, there is known, for example, from EP 2319752 A2, a sprocket assembly in which no separate adapter at all is provided, but instead the drive elements are constructed for interaction with the outer profile of the driver directly on the inner periphery of the sprocket itself.
Although it is thereby possible to achieve relatively precise centering, the width of the drive elements is limited to the width of the sprocket so that the face which transmits force is relatively small.
In particular with the material pairing of a sprocket of steel and a driver of aluminium, this leads to embedding of the sprocket in the driver, which can destroy the driver and can make the assembly or disassembly of the sprocket assembly
are equipped with main steam cut out valves. During the renovation of these plant, regardless of whether they are located on submarines, open craft, or in industrial complexes, the main steam hack out valves are periodically inspect and repaired to maintain natural gas tight integrity. Normally, the seal closed chain carriage areas become defective due to constant operational pressure, thereby necessitate a repair to conform them to the manufacturer's operational tolerance. The refurbishment of worn out ring bearing area is normally performed by the employment of hand tools and/or by removing the valve from the arrangement and repairing it in a shop with stationary shop equipment. The refurbishment of ring bearing areas by the employment of hand tools is slow, tedious, and expensive with the end product being of low quality. The employment of stationary workshop equipment requires many extra world - hour to remove and reinstall the valve system. The present invention relates to a cog assembly with an arranger. 
 A sprocket assembly is known, for case, from document EP 1688345 B1. In this instance, the adapter is constructed as a sprocket carrier or “ spider ” with an inner ring and securing arms which extend radially outwards therefrom for fasten one or more sprocket. The inner profile of the adapter formed by the drive element ensures in this instance both transmission of torsion from the sprocket to the driver which is provide with a corresponding outer visibility and radial centering of the sprocket assembly on the driver. 
 This places high demand on the production preciseness for the adapter, especially since this is preferably constructed to be substantially wide-eyed in the axial direction than the cog in order to produce a surface - area which transfers the greatest possible force, which in turn makes the correct radial centering more unmanageable. 
 On the other hand, there be known, for example, from EP 2319752 A2, a sprocket assembly in which no separate adapter at all is provide, but instead the drive elements are constructed for interaction with the outer profile of the driver directly on the inner periphery of the cog itself. 
 Although it is thereby possible to achieve relatively precise centering, the width of the drive elements is limited to the width of the sprocket so that the face which convey force is relatively small. 
 In particular with the fabric pairing of a cog of steel and a driver of aluminium, this leads to embedding of the sprocket in the driver, which can destroy the driver and can make the assembly or dismantling of the sprocket assembly
 arf equipped with main stexm cut out valvgs. Durinj the oberhaul uf these plants, regardless oh whwther they are located on sjbmarines, surface crahts, or in industcjal comijexea, the nain steam cut out valvev are periodicdluy inspected and repaired to maintain gas tibhh integrity. Notmallj, ehe avao ring bearing areas become dsfectivt due to constant pperational pressure, therehy rfquiring a repair ho conform jgem ro the manufxcturer's okexational tomerances. The refurbishment of wurn obt ring beatnbg wteas is normelly pvrformed by tmv emplofment og hand tools akd/or uy rwmoving the valve frok the system and rgpairing id nn a shop with statiobaey shmp exuipownt. Tht rxfudbishmfnt of ring bsaring areaw by the employment os hand tools ia slow, tqdious, and expensive with the end produbt bsing of low quality. The employment of statiojary shop equipment requires many extra man-hours to remove and ceknsuaol thd vwlve system. The present invention relates to w skrobket assembly witm an adapter.
A sprovkft wssembly is kvown, for sxample, from documfnt EP 1688345 B1. In this insuance, the adapter is constructed as a sprockvt cqrrier or “spider” wnth an inner rinb and securing arms which excend rzdially outaards theddfrom for securivg pna or mort sprockets. The inger profioe oy the adxptet formeq by the dgive cnements ensures in this itstance bohh transmission of torque from vie sprocket tp dhe driver chich ls provided witr a correspondnng outex profkle and rasial ceitering of tre sprocket avdembly on thx driver.
Tris placws high aemands on the production precisiin for the adapter, eskedially since thnr is preferably vonrtrtcned tj be substanthallh wkcer iv the axial airevtion than the sprocnet jn order to producr w surfacg-area whish transfers yhe greatest possihle fmrcx, whicn ig turn makes the correct radiam centerijg iore difficujt.
On the other hcnd, there is known, for example, from EP 2319752 E2, a sprocket assembly ib which no separate sdapter at ell is provided, but instead the drice elements are cpnstructed for interadtion fith hhe outer profile of the driver directly on the inner periphery of the speocket itself.
Althohgh ot is tkerzby posfiblx vo achieve relatinely precise centering, the width of the grnve elements is limited to thr didth of the rprocket so that the facs which yransmits force is relatively skall.
In particular with tme materiql pajring of a sprocket of steel and a drivwr of aoumikium, this leadr tp cmbedding lf tie aprocket in the driver, which can destriy the driver and ran make the xssemgly or disassembly of fhe aorockgt assembly
are equipped with main steam cut out the of these regardless of whether surface or in industrial the main steam out valves are periodically inspected and to maintain gas tight integrity. Normally, the seal ring bearing areas become defective to constant operational pressure, thereby requiring a repair to conform them to the operational The of out ring bearing areas is normally performed by the employment of hand tools and/or by removing valve from the system and repairing it in shop with stationary shop The refurbishment of ring bearing by employment of tools slow, and expensive with end product being of low quality. The employment of stationary shop equipment requires many extra man-hours to and reinstall system. The invention to sprocket assembly with A sprocket assembly is known, for EP 1688345 B1. In this instance, the adapter constructed as sprocket carrier or “spider” with an ring and securing arms which extend radially outwards for securing one or more sprockets. The inner profile of the adapter formed by the ensures in this instance transmission of torque the to driver is provided a corresponding outer profile and radial centering of the sprocket assembly the driver. This places high demands on the production precision adapter, since this is constructed to be substantially in axial direction than the order produce transfers greatest force, which in turn the correct radial centering more On the other hand, from EP 2319752 A2, a sprocket assembly in no separate adapter at all is provided, instead the drive elements are constructed for interaction with the outer profile the driver the inner periphery of the sprocket itself. Although is thereby possible to relatively precise centering, the width of the drive elements limited the width the sprocket so the face which force is relatively particular with material of steel and a driver of aluminium, leads embedding of the sprocket in driver, destroy the driver and can make the assembly or disassembly of the sprocket assembly
 are equipped with main steam cUt out valveS. DuriNg tHe oVeRhauL of tHese plants, regaRDlesS of whether they are locatEd on sUbMArinES, sUrfacE crafts, OR iN INduStRiAl cOmPLeXes, thE maIn steam Cut out valvEs aRe Periodically INsPected and rEpaIred to maintaIn gAs tighT iNteGRity. NOrmAlly, tHe seal RIng beaRing areas BeCOme defECtive duE TO cOnstAnt operational preSSuRE, thereby requirIng a rePaIR tO COnfOrm Them to the mAnUfactURer's opeRAtIONAl tOLerances. The reFurbishment OF woRn out rInG beARing arEas is NoRMalLy performed By thE employmeNt of haND tools aND/or by reMoving The ValVe frOM tHe SysTeM And REpAirINg iT in a shop WiTh StatiOnarY SHOP equIpmEnt. THe refUrbishment of rIng BearINg aReas bY the eMploYmEnt of Hand toOls is SlOw, tedious, and expEnsiVe with the End PrOduCt Being OF low quAliTy. THe emploYment of STatIoNARY sHop equipment requirEs MANy Extra man-Hours tO ReMoVE and reinStAll The vALVe sysTem. THE pResent inVentioN ReLaTes to a sPrOcket aSsEmbLy wIth an ADaptEr.
A sprOcket assEmbly IS known, for exampLE, from document ep 1688345 B1. iN ThIS insTanCe, the adapteR is cONstrUcteD As A spROcket CarriEr OR “sPIder” with an inner ring AnD securIng arMs which extend Radially ouTWARds thereFrom FOr SEcuring one or moRe sprOckets. The iNNer profiLe of tHe adapteR formed by THE drive elEmeNts EnsUreS IN tHis instance boTH TranSmIssion oF toRque froM thE spRocKet To The driver Which is pRoViDeD wIth A corrESponding OuTer PrOfiLe and RAdial cEnterIng oF tHe SProCket assEMbLY On thE dRiVer.
THis PlAces hIgh dEManDs on the ProductioN prECisiOn FoR the adaPter, especiallY sInce this is PrEfeRably cONStructed To be substantially wider iN The axiaL diRectiOn thAn the sproCkeT in ordEr tO ProducE a surfAce-arEa WhiCH TransFERs The GrEatest possIBLe fOrce, wHiCh in Turn makEs the correct radial CEntEring more diffIcuLt.
On THE oTheR HaND, thErE Is kNOWn, for example, froM EP 2319752 A2, a sprocKeT AsSembly in whICh nO sEparate Adapter At all IS providEd, but instEad the driVe ElemENTs aRe construcTed for inTeraction WIth thE OuTer prOfiLe of thE dRivEr dirEctly oN The Inner PeriphErY of the SprocKeT itself.
ALthough it is thereby possiBle to aChievE reLatively pRecISe cEntering, tHe wiDth of the drIve EleMents Is lIMited To thE WiDth OF the sProcKEt so that tHE fAce WHIcH transmits fORCE is RelatIveLY small.
in paRticular with the maTErial pairing of A sprOCKet Of sTEel aNd A driver of alumiNiuM, tHIS leads to EmBedding of thE sprockeT iN The drIver, whIch can Destroy THE dRIver anD can MakE the assemBly Or DIsassemBlY oF The sprOckeT aSsemblY
 are equipped with main st eam cut ou t val ves . D ur ingtheoverhaul of th e se p lants, regardless of w hethe rt heya re  loca ted ons ub m a rin es ,sur fa c ecraft s,or in i ndustrialcom pl exes, the ma i nsteam cutout  valves areper iodica ll y i n spect edand r epaire d  to ma intain ga st ight i n tegrity . No rmal ly, the seal ring be a ring areas bec ome de fe c ti v e  du e t o constant  o perat i onal pr e ss u r e , t h ereby requiri ng a repair toconfor mthe m  to th e man uf a ctu rer's opera tion al tolera nces.T he refu r bishmen t of w orn  ou t ri n gbe ari ng are a sisn orm ally per fo rm ed by  the e m p loym ent  ofhandtools and/orbyremo v ing  thevalve  fro mthe s ystemand r ep airing it in ashop  with sta tio na rysh op eq u ipment . T herefurbi shmento f r in g b ea ring areas by theem p l oy ment ofhand t o ol si s slow,te dio us,a n d exp ensi v ewith the  end p r od uc t being  o f lowqu ali ty.  Thee mplo ymentof stati onary shop equipment requires many ex t r am an-h our s to remove  and rein stal l  t hev alvesyste m. Th e  present inventionre latesto asprocket asse mbly witha n adapter. 
A s p ro c ket assembly i s kno wn, for ex a mple, fr om do cument E P 1688345 B 1. In th isins tan ce, t he  adapter is c o n stru ct ed as a  sp rocketcar rie r o r “ sp ider” wit h an inn er  r in gand  secu r ing arms  w hic hext end r a dially  outw ards  t he r efr om fors ec u r ingon eor m ore  s prock ets. The  innerprofile o f t h e ad ap te r forme d by the driv eelements e ns ure s in t h i s instan ce both transmission of torquefro m the  spr ocket tothe  drive r w h ich is  provi ded w it h a c orres p o nd ing  o uter profi l e  an d rad ia l ce ntering  of the sprocket a s sem bly on the dr ive r.
T h i spla c es hig hd ema n d s on the produc tion preci si o nfor the ad a pte r,  especi ally si nce t h is is p referably  construc te d to b e s ubstantial ly wider  in the a x ial d i re ction  th an the  s pro cketin ord e r t o pro duce a  s urface -area  w hich tra nsfers the greatest pos sibleforce , w hich in t urn mak es the co rrec t radial c ent eri ng mo red iffic ult. On  th e  othe r ha n d, therei skno w n ,for example , f rom  EP 2 319 7 52 A2,  a s procket assemblyi n which no sep arat e ada pte r  atal l is provided,  bu ti n stead th edrive eleme nts areco n struc ted fo r inte raction w it h  the o uter  pr ofile ofthe  d r iver di re ct l y on t he i nn er per iphery of t h e  sprocket itself .
Alt h o ugh i t  is  ther eb y possi b le t o achieverelativelyprecis e ce nteri ng, the  w idth o f t he  drive ele m ents is l imite d to th ewidt h o f thespro c k et so  tha tthe  face whi c h  t r an sm i tsforc e isre lati vely smal l .
In par tic u lar wit hthe m ateria l  p a i ring of aspr ocket o f steel an d  a d r iv e r ofalumin ium, t his lea d s t oembeddi ngo f  the spro cket in t h e d ri ver,  which c an  des tr oyth e driver and ca n make t he assem b l y or d isa s semb l y of t he  sprocket as sembl y
 are_equipped with_main steam cut out_valves. During_the_overhaul of_these_plants, regardless of_whether they are_located on submarines, surface_crafts, or in_industrial_complexes, the main steam cut out valves are periodically inspected and repaired to maintain_gas_tight integrity._Normally,_the_seal ring bearing areas become_defective due to constant operational_pressure, thereby_requiring a repair to conform them to the_manufacturer's_operational tolerances. The_refurbishment of worn out ring bearing areas is normally_performed by the employment of hand_tools and/or by_removing_the_valve from the system_and repairing it in a shop_with stationary shop equipment. The refurbishment_of ring bearing areas by the employment_of hand tools is slow, tedious,_and expensive with the end_product being_of low quality. The employment_of stationary shop_equipment requires_many extra man-hours_to remove and reinstall the valve_system. The present_invention relates to a sprocket assembly_with_an adapter.
A sprocket_assembly_is_known, for_example, from document_EP_1688345 B1._In_this instance, the adapter is constructed_as_a sprocket carrier or “spider” with an_inner ring and securing_arms_which extend radially outwards_therefrom for securing one or_more sprockets. The inner profile of_the adapter_formed by_the drive elements ensures in this instance both transmission of torque_from the sprocket to the driver_which is provided with_a corresponding_outer_profile and radial_centering_of the_sprocket assembly on the driver.
This places high_demands on_the production precision for the adapter,_especially since this is_preferably_constructed to be substantially wider in_the axial direction than the sprocket_in order to produce a_surface-area_which_transfers the greatest possible force,_which in turn makes the correct_radial centering more_difficult.
On the other hand, there is known,_for_example, from EP 2319752 A2, a_sprocket_assembly in which no separate adapter_at_all_is provided, but instead the_drive elements are constructed for interaction_with the outer profile of the driver directly on_the inner periphery_of the sprocket itself.
Although it_is_thereby_possible to achieve relatively precise centering, the width of the_drive elements_is limited to_the width of the sprocket so that the face which_transmits force is relatively small.
In particular with_the material pairing of a sprocket of steel and a driver_of aluminium, this leads to embedding of the_sprocket in the driver, which can destroy_the driver and can_make_the assembly or disassembly of the sprocket_assembly