Pre-Load Bolt Assemblies BS EN HRC Assemblies BAPP

Transcription

1 Pr-Loa Bolt Assmblis

2 Pr-Loa Bolt Assmblis k BS EN HRC Hxagon Bolt Dimnsions b(rf.) c a s w k kw r s pb c max. min. max. max. min. max. min. min. nom. max. min. min. min. max. min. M M M M f M M M R k r s l s l g r Y a l w (b) s f 1 f 2 b s b kw k b BS EN HRC Splin En Dimnsions With Across Flats of Splin-n sb a With Across Cornrs of Splin-n b b Lngth of Splin-n F1 Brak off Lngth F2 nom. max. min. min. min. max. M M M M M M M a For hot ip galvaniz bolts, th imnsions apply bfor galvanizing xcpt for sb max. which applis aftr galvanizing. b b min. = 1,13 sb min. Bfor Clamping Prouct Charactristic Matrial Stanar Stl Gnral rquirmnts EN Mchanical Proprtis Impact strngth Tolrancs Surfac Finish c Tolranc 6g a Intrnational Stanars ISO 261, ISO Proprty Class 10.9 Europan Stanar EN ISO Valu K V, min = 27 J at 20 C Tst Pic b ISO Tst EN Prouct Gra Intrnational Stanar EN ISO Normal Surfac iscontinuitis Accptability Bfor Clamping C xcpt: imnsions c an r. Tolranc for lngths 150 mm ± 4.0mm as procss Hot Dip Galvaniz EN ISO Aitional Protction Against Corrosion Aftr tightning, th non-coat ara apparing at th n of th bolt rsulting from th fractur of th splin-n may b protct against corrosion by applying an fficint protctiv tratmnt (.g. by a complmntary zinc-rich paint). Limits for surfac iscontinuitis as spcifi in EN For accptanc procur, s EN ISO a Th tolranc class spcifi applis bfor hot ip galvanizing. Hot ip galvaniz bolts ar intn for assmbly with ovrsiz tapp nuts. b Th location of Charpy V-notch tst pics in th bolt shank shall b as spcifi in EN ISO c Attntion is rawn to th n to consir th risk of hyrogn mbrittlmnt in th cas of bolts of proprty class 10.9, whn slcting an appropriat surfac tratmnt procss (.g. claning an coating); s th rlvant coating stanars. As procss mans th normal finish rsulting from manufactur with a light coating of oil. Othr coatings may b ngotiat btwn th purchasr an th manufacturr provi thy o not impair th mchanical proprtis or th functional charactristics. Coatings of camium or camium alloys ar not prmitt. Aftr Clamping Th bolt racts to th fastning torqu an th notch n of th bolt shars off. Th rquir clamping forc is thus givn. Faturs of High Strngth HRC (Tnsion Control) Bolts Dvlop for mor simplifi bolt fastning an mor accurat prformanc. HRC (Tnsion Control) Bolts offr xcllnt charactristics as shown blow. 1. Controll clamping forc can b nsur. 2. Compltion of bolt fastning can b confirm by th shar-off of th notch n of th bolt. 3. Rmovs th possibility of oprator rror. 4. Fastning can asily b on by lctric wrnch. 5. Noislss installation an no n of wrnch ajustmnt. 6. Th bolt os not rotat whn fastning. Notch Bolt tip Connct part Washr Nut/Fastning Torqu Outr Slv Raction Innr Slv 1 Stockists of Inustrial Fastnrs, Enginring Supplis an Halth & Safty Proucts

3 Pr-Loa Bolt Assmblis BS EN HR Nut Dimnsions pb M a w m mw c s max. min. max. min. min. max. min. min. max. min. max. min M M M c M M M a For hot ip galvaniz nuts, th imnsions apply bfor galvanizing. b P is th pitch of thra. c w, max. = s actual. t Prouct Charactristic Matrial Stanar Stl Gnral Rquirmnts EN Mchanical Proprtis Tolrancs Surfac Finish c Surfac Discontinuitis Accptability Tolranc 6H or 6AZ a Intrnational Stanars ISO 261, ISO 965-2, ISO Proprty Class 10 b Europan Stanar EN Prouct Gra B xcpt imnsions m an c Intrnational Stanar EN ISO c Normal as procss Hot Dip Galvaniz EN ISO Othrs to b agr Limits for surfac iscontinuitis as spcifi in EN ISO For accptanc procur, s EN ISO BS EN Nut Proof Loas. Class 10 Nut thra Nominal Strss Ara of Stanar Tst Manrl As mm 2 Proprty Class 10 Tolranc Class 6H or 6AZ Proof Loa (As x Sp) N Nuts Accoring to EN HR a Nuts with Hight m = HRD b mm² Proof Loa kn Proof Loa kn a tolranc is 6 H for non-coat nuts an 6 AZ for hot ip galvaniz nuts. b For proof loa valus, s 5.3. All othr mchanical proprtis as spcifi in EN c Excpt tolranc on prpnicularity of baring fac, s tolranc t in Tabl 5. As procss mans th normal finish rsulting from manufactur with a light coating of oil. Othr coatings may b ngotiat btwn th purchasr an th manufacturr provi thy o not impair th mchanical proprtis or th functional charactristics. Coatings of camium or camium alloys ar not prmitt. a Sampl Nut Marking BDL Sampl Bolt Marking HRC 10.9 M a M M b w 10 HR B D L M M M M mw m s BG HRC 10.9 a Th proof loa valus ar bas on th strss unr proof loa of MPa. b Th proof loa valus ar bas on th strss unr proof loa of MPa. 10 HR B G 2 Stockists of Inustrial Fastnrs, Enginring Supplis an Halth & Safty Proucts

4 Pr-Loa Bolt Assmblis BS EN Chamfr Washr Dimnsions Nominal siz of bolt or scrw BS EN Parts 5 & 6 Insi Diamtr 1 Outsi Diamtr 2 Thicknss h Extrnal Chamfr Intrnal Chamfr c max. min. max. min. max. min. max. min. max. min. M M M M M M M M c BDL H BG Charactristic Stanar Gnral Rquirmnts BS EN Finish / Slf Colour / Black BS EN & 6 Coatings Hot Dip Galvaniz BS or BS EN ISO Mchanical Proprtis BS EN & 6 Dimnsions & Tolrancs BS EN & 6 Prouct Marking BS EN & 6 H BS EN Mchanical proprtis of chamfr washr Nominal Siz Vickrs Harnss (HV) min max M16 to M36 inclusiv Stockists of Inustrial Fastnrs, Enginring Supplis an Halth & Safty Proucts

5 Quality Assuranc Galvanis, (bolts, nuts an washrs) ar suppli in a fully assmbl conition ray for us. No tratmnts such as T-Washing or Etching can b appli bfor installation as this will chang th tightning charactristics an prvnt th corrct prloa bing achiv. Th componnts of th assmbly, as suppli, hav bn tst as a batch an must not b mix with componnts from any othr batch of HRC assmblis. Car must always b takn to avoi any contamination of th assmblis with anything that may chang th lubrication of th nut, bolt thra or washr. SUCH CONTAMINATION WILL EFFECT THE ASSEMBLY PRELOAD THAT IS ACHIEVED DURING TIGHTENING. Although HRC assmblis ar sign to withstan th maximum prloas that can occur whn contaminat with watr, w woul avis that tightning of HRC assmblis is avoi in th rain. 4 Stockists of Inustrial Fastnrs, Enginring Supplis an Halth & Safty Proucts