DEUTSCHENORM August 1990, Rough castings of spheroidal graphite cast iron] = BIN ‘General tolerances and machining allowances (For replacement purposes oniy) 1685-1 es 7.1400 Supersedes ‘Octobe: 1860 ection Descriptors: Genera llerances, machining sowances, casings, ‘spheroidal graphite cant ion. uirohtee aus Guseisen mit Kugelgrahit - Algemeintsorancen Bearbeltungerugaben (hicnt ur Neskoratastonee) In hoseing with current practic in standarde published by the Intemational rgarizaton for Standariston {830} comme has been used throughout ws the Gecinal marr Dimensions in mn 1. Scope and field of application This standard species gereal tolerances and machining aiowances for rough castings of spheroidal [apinte Sse nnion are subject toe echnical Gsivary conden lls down n DIN To89"* Users of is standard shous note that row ony apples o castings used for ropa and replacement purposes. New designs are covered by ISO 80621808, ‘Owing to telack of empirical data. genera terances have ot bean spacied here for angular mensions. ‘ange are to most accuray rogaromerts eee shal beincestod as aviv! towrances 2 Normative references “Tle standart incorporates, by datad or udated reterancs, provisions fom other pubseations. The formative rlerances ar cid at he apprrate places inthe text, and te tes of fe publications are sted below For dated relerencen, subsequent ahenamens to x foulera ot any ef these publleations ‘app fo rs stanaara ony when ncerperaes in oy amaramont of owen. For uneated arenes, Te [est econ ofthe pubscaton referred to apples. DIN 7660-1 Rough castings ~ Gener oerances andmachinng allowances ~ Gane DIN 1693-1 Sphercida graphite cast Kon ~ Unaloyed and low aioy gades IN 7182-1 Sow, davations tolerances and ts ~ Bale concepts $0 6062 1904 Castings -Syatem of mensional arances and machiing alowances 3 Concepts ‘See DIN 142-1 and DIN 1680-1 forthe term “general tolerances and “olarance grade, and DIN 1680-1 ‘ora dateton of machining allowance 4 Tolerance grades 4.1. Dimensional deviatons: Fer castings ot spheroidal aphite cast won, dimensions deviations are lagely depend on the dinesioa accu of ne pten the degre ohiragedepener one Mate typeand ‘hating conguraton, ne care taken dura moulding and cas moulding andcasing eal tment eed based on ie batch ses os _ By the nemna ices, 4.2. Application of tolerance grades mit devon shal be specie on the basis ofthe tolwance grades gven ia tables 1 and 2, Linear ‘mensions and thickness shal be sped for he same rade, or exception see DIN 160-1. Continued on pages 2 to 4 Transition by DIN-Spracrencnst Ince or Geman nage ea nad nore Ye ee Fer Ne, DIN 68571, 1008-78 Se vg me OTE Bat hae ct tana Gar San As, ccna selenePage2 Be S6Rs-+ 1998.08 4.9. Nominal size ranges “Thesemnnalsze anges stown ne ables or sach lrancegradehave been seated one basis ot etable ‘mowsuement data For sites ouside the range fra given grade, fe ex coarsest gre apes ‘5 Machining sllowances The machining allowance, BZ, ta uncton of he largostaxtmaldmensen of th cating and the sme or BtSorance gages (or tie 3p see ON SBE for excptons For azes upto 500 mm, machineg alowances may be reduced to appronimately hat the vals specie i {abled f repatter saoment, casting procedure nd machina precedirewihregardie camping stares ‘Shcaatum surtaces have been optimised or example or ates reduction, as agreed Detwows te ctome: [and te foundry. Those reduced values ar shown inable 4 For casting wth amace greater than 1000 ke ofa wal hctness greater han $0 mm, the machining alow ‘ancen shal be agrad Between the manulacurer and oben 18 Designation _wnere both he tolerance grade and the machin alowance havebeen selacted onthe basis of the peaene Sandra the eaignaonsta grade GT #7 toerance (OTH 17) meanpuncean wah amachning alovance 25 febotomandice ntacesn tne and foro sutaces 82.7 or exam, sade eagraes Tolerance and machining allowance DIN 1689 - GTB 17 ~ 82 2,5/3 ‘S00 DIN 1680-1 for other exampies of designations. “Tobe 1 Limit deviation for near dimensions (length, with, height, centreine diatance, diameter, radu’) EULIEDGEEEEESS Bia) 94538 SoS iecaneaeomaatelpes heeiciocerpoheon mons mpyaseseaa | “Table 2 Limi deviations for thcknesses (ll, web and ib thicknesses). aa Tene rae ol US EE | aie | ae | se | aie 7 6 ea [25s 55 zs) Sad) 2 4 ae? fe as sos fet [su [sw[eitew! - | — 7) respective of he valves given in histabie, teach deviation othe iar dinwnsione ofa cating ha fm cae be gretor than £25 % of De noma! sa, founded to one deena place Thi Toucan fot Pirin elevance whan aping the doviasone he bones comedy te ines “Tha vie epectog hee are taken fom te deviations speed for one ful rade comer nabwn 605-1 1096-08 Table 3: Machining allewances ‘Nema ste anae Postion ot | aed on he pest ome £0 Jove 120 Jone 260 lowe 500 lover 10 nctacincoua | cours cansinner | UP% 80 |S 18 [ones 330 [orc S00 lapnsa600 hot on] ating er eee 2 as | « [ie sciacerntte [eros sea ot | UP! 125% 153 [esto ms fo aed casing) Botom.nise [ata 1 ws [1s 7. Indicating general tolerances on existing drawings Mf a entng drawing dove NOT rte to the Solamnes grups epscted in the 1062 eon of he standard {wich sn onger wai then the toerarcegradee Qvenin tables | and? donot app. ns recommended {hata gage uti for ine casing n quesven oe naeaies on such drawings if a etingsrowing DOES rete to tha provousy ald tlarince grape, Ie racommanded hat theta bs {onvrted ete lrance gades spread ties and’ ote preset standard” tthe net possble ‘he permasbis iat devatons mre te bethan tem wbles & and Soom Tables Sand 6 co NOT app to new drawings. ‘able: Umit dations for tinar dimensions on eviting drowlage +5 225 Ter anne dane, Ue int avons soe or rams | oe exeting dawinge Toleance cruPages Sieve. 0808 8 Indicating machining allowances on existing drawings The machining allowances spect nie standart ny app te drawings on whieh general oarances ‘ecrdance wth cause 4 arabes and 2 of tie sanded we nes Previous editions Amendments ‘As compared withthe Stee 1900 eon the tone now apps nlf castings uedtorroplacemeat Dinpowns Other relevant standards: DIN 1880-2 own castings — General ileances DIN 1690-1 Teceical deter conden fr eatin of metalle materials ~ Genera