V-Pulleys - Technical Applications | SIT S.p.A.

1 V-PulleysPulleys and a x b 9,7 x 8 12,7 x 10 17 x 13 22 x 18V-beltsSIT Pulleys (DIN 2211)PT SpZ Spa Spb cPBT SpZ Spa Spb SpcPCT SpZ Spa Spb Spc - V - - - - - - - - - - - - * * - - - - - - - X - - - - - - - - - * *.

2 - - - - - - - - - - - - - - * * - - - - - - - - - - - - - - - - * * - - - - - - - - - - - - - - - - - - * * - - - - - - - - - - - - - iSo 4184 - Din 7753/1 SpZ Spa Spb Spc Z a b c10 x 6 13 x 8 17 x 11 22 x 14 Rma - mpta 3V 5V 8V 9,5 x 8 16 x 13,5 25,5 x 23 iSo 4184 - Din 2215abSIT V-Pulleyson the market there are various types of V-belts, among which,the most 'widespread are: narrow SpZ-Spa-Spb-Spc (iSo4184 - Din 7753) classic Z-a-b-c (iSo 4184 - Din 2215) american narrow 3V-5V (Rma-mpta).

3 The narrow V-Pulleys (Din2211 - iSo4183) manufacturedby SITand shown in this catalogue are suitable to be usedwith all the aforementioned types of belts. note: for bandedbelts 3V - 5V - 8V use pulleys with Rma specifications ( 101). these pulleys are not standard and are available onlyon request. = compatibleX = not compatible* pitch among the grooves of SpZ pulley is different from the 3V. Similarly, the pitch is also different between Spb and table between main V-belts types and SIT V-Pulleys . V-PULLEYSP ulleys and pulleys - solid hubmaterial: cast iron Din 1691 GG-20/GG25 Finishing: protective surface pulleys suitable for normal application for use with thefollowing belt types: SPZ-Z-3V SPA-A SPB-B-5V CFeaturesour pulleys can be used for application with a speed up to 35 pulley dimensions are very accurate as they are manufactu-red only by means of cnc or automatic higher speed is strongly recommended to use steel as mate-rial of pulleys - for mounting taper bushingSER-SIT material: cast iron Din 1691 GG-20/GG25 Finishing: protective surface pulleys suitable for use with the following belts: SPZ-Z-3V SPA-A SPB-B-5V SPC-CPCT pulleys - oversized hub for Self Locking Unitsmaterial: cast iron Din 1691 GG-20/GG25 Finishing: protective surface pulleys suitable for use with the following belts.

4 SPZ-Z-3V SPA-A SPB-B-5V SPC-CTOLERANCESB alancingour pbt pulleys are statically balanced according to pt pulleys are not balanced, as they do not have a V-Pulleys - production rangedw[mm]Toleranceof pitchdiameter dw[mm]Eccentricitytolerancerelevant tothe outsidediameter[mm]50 0,40,256 0,463 0,571 0,680 0,690 0,7100 0,8112 0,90,3118 1,0125 1,0135 1,0140 1,1150 1,2160 1,3180 1,40,4190 1,5200 1,6212 1,7224 1,8236 1,9250 2,0280 2,20,5300 2,4315 2,5355 2,8400 3,2450 3,60,6500 4,0560 4,5630 5,0710 5,70,8800 6,4900 7,21000 8,01120 9,01,01250 10,0 Max. difference among the pitch diameterof the grooves of the same pulley[mm]SPZ - SPA - SPBSPC0,40,6 NoteDue to a constant improvement of our products, Technical data of the pulleys may be subject to Technical and production reasons, in some cases materials other than those indicated in the catalogue may be confirmation of the material actually available, please contact customer and of grooves (DIN 2211)Dimension of grooves of V-Pulleys suitable for banded belts (RMA)SectionSPZ[mm]SPA[mm]SPB[mm]C/SPC[m m]bw[mm]8,511,014,019,0b1[mm] ( 0,2)9,712,716,322,0c [mm]2,02,83,54,8e [mm]12 0,315 0,319 0,425,5 0,5f [mm]8 0,610 0,612,5 0,817 1t [mm] ,817,5c: 20 | Spc.

5 23,8 34 per dw [mm] 80 118 190 315 38 per dw [mm]>80>118>190>315tolerance 1 1 1 1 Wcrown widthfor numberof groovesZ[mm]Z = 116202534228354459,534050638545265821105 648010113667695120161,578811013918781001 25158212,5911214017723810124155196263,51 113617021528912148185234314,5+ 0,6 0+ 0,6 0+ 0,6 0+ 0,6 0 SectionD[mm] [ ]bg[mm]hg min.[mm]a[mm]Rb min.[mm]db[mm]Sg[mm]Se[mm]3V 8936 0,258,89 0,138,630,634,68,73 0,0110,3 0,4990 15238 0,258,89 0,138,630,634,68,73 0,0110,3 0,49153 130540 0,258,89 0,138,630,634,78,73 0,0110,3 0,49> 30542 0,258,89 0,138,630,634,88,73 0,0110,3 0,495V 25438 0,2515,24 0,1314,981,278,415,08 0,0117,5 0,413255 40640 0,2515,24 0,1314,981,278,415,08 0,0117,5 0,413> 40642 0,2515,24 0,1314,981,278,515,08 0,0117,5 0,4138V 40638 0,2525,4 0,1325,142,5414,625,4 0,0128,6 0,419407 56940 0,2525,4 0,1325,142,5414,725,4 0,0128,6 0,419> 56942 0,2525,4 0,1325,142,5414,925,4 0,0128,6 0,419+2-1+2-1+2-1+2-1+3-1+3-1+3-1+6-2+6- 2+6-2 bgdbRbhgSeSgaExternal diameterPitch diameter tbwb1 ffcdwde WfePulleys and SPZ-Z-3 VDimensions of V-Pulleys PT - solid hubpitchdw[mm]numberofgroovestypem[mm]l[ mm]W[mm]z[mm]

6 501132*2816122135*352873135*444044135*56 5245611a32**2816122140**352873142**44404 4142**5652463114028161221403528731424440 44142565247111a4028161221483528731504440 44150565247511a4028161221a503528731a5044 40441a505652480144028161221a503528731a50 4440441655652451656864485144028161221a50 3528731a50444044165565245165686449014402 8161224503528734504440441a65565245168686 4495144528161224503528734504040-41a65565 2451a68686441001445281612245035287346040 40-41a655652451a686864410614452816122450 3528734604040-44655652454686864411214452 8161224503528734604040-44685252-55686064 4118144528161224503528734604040-44685252 -557560644pitchdw[mm]numberofgroovestype m[mm]l[mm]W[mm]z[mm]12514452816122450352 8734604040-44685252-55756064413214452816 12246040281234604040-44685252-5575606441 401455281612246040281234604040-44685252- 5575606441501455321616246040281234684540 544685252-558060644160145532161624604028 1234684540544685252-55806064418014553216 16246540281234684540544805252-5580606442 0014a5532161624a6540281234a684540544a805 252-55a806064422418553216162865402812386 84540548805252-598060644250185532161628b 6240281238684540548805252-59886064428018 684516292868452817388050401048805252-599 6606443151868451629286845281738805040104 8965552359966064435518684516292868452817 3880504010489655523599660644 PT SPZ-Z-3 VPart NumberPT100 SPZ2V-pulley - solid hubpitch diameter [mm]Sectionnumber of grooves1 MdwZWL 1 AMdwZWL MdwZLW 4 4A (withlightening bores) WLZdwM 55A (withlightening bores) WLZdwM8 (3 spokes)8A (6 spokes)

7 9 ( dwM 8B (3 spokes)LWZMdwZLW 9 (3 spokes)9A (6 spokes)1 * note: the diameter at the bottom of the groove is 32 mm** note: the diameter at the bottom of the groove is 38 mmV-PULLEYS - PTPulleys and - PTPT SPA-ADimensions of V-Pulleys PT - solid hubpitchdw[mm]numberofgroovestypem[mm]l[ mm]W[mm]z[mm]125145535201524604535103468 5050-45685065155580508030132145535201524 6045351034685050-45685065155580508030140 1460352015246045351034685050-45685065155 5805080301501460402020246045351034685050 -456850651555805080301601460402020246045 351034685050-458050651555805080301701460 402020246045351034685050-458050651555805 080301801465402020246850351534685050-458 0606555580658015190146540202024685035153 4685050-45806065555806580152001465402020 246850351534755050-458860655558865801522 41465402020246850351534755050-4588606555 5886580152361468402020246850351534755050 -458860655558865801525018755020302875503 51538755050-4988606555996658015 PT SPA-Apitchdw[mm]numberofgroovestypem[mm] l[mm]W[mm]z[mm])

8 501132*3520152140*4535103140*54504561135 **3520152140**4535103140**545046311a4035 201521a4045351031a405450441a406865351a40 848047111a403520152150453510315254504415 2686535152848047511a4035201521a504535103 1a525450441a526865351a52848048011a453520 1521a50453510316254504416268653516284804 85144535201521a5045351031a625450441a6268 65351a628480490144535201521a6045351031a6 25450441a686865351a688480495144535201521 a6045351031a625450441a686865351a68848041 00144535201521a6045351031a625450442a7050 651552a705080301061445352015246045351034 605050-42a6850651552a6850803011214453520 15246045351034605050-42a6850651552a68508 0301181160352015246045351031a705050-42a7 050651552a805080301 MdwZWL 1 AMdwZWL 2A3 LWZdwM MdwZLW 4 4A (withlightening bores) WLZdwM 55A (withlightening bores) WLZdwM8 (3 spokes)8A (6 spokes)9 ( MdwZLW 9 (3 spokes)9A (6 spokes)1 * note: the diameter at the bottom of the groove is 28 mm** note.)

9 The diameter at the bottom of the groove is 34 mmPulleys and of V-Pulleys PT - solid hubpitchdw[mm]numberofgroovestypem[mm]l[ mm]W[mm]z[mm]280186850203028755035153875 5050-49886065559966580153001875502030287 5503515388860501049886065559967080103152 8755035153888605010498860655599670801035 5288860352538886050104988606555996708010 40018a7850203028a8860352538a9665501548a9 66565-59a9670801045028a8860352538a966550 1548a1047065559a10470801050028a886035253 8a9665501548a1047065559a10470801056028a8 860352538a9665501548a1047065559a10470801 063038a10465501548a1127065559a1207580580 038a128100505048a128100653558a1451108030 PT SPA-AMdwZLW 9 (3 spokes)9A (6 spokes)1 WLZdwM8 (3 spokes)8A (6 spokes)9 ( V-Pulleys - PTPulleys and - PTPT SPB-B-5 VDimensions of V-Pulleys PT - solid hubpitchdw[mm]numberofgroovestypem[mm]l[ mm]W[mm]z[mm]140146035251024655044635755 0631345805082325580601014165806012060150 1460402515246550446357550631345805082325 5806010141658860120601601465402515246850 4463580506313458860822255886010141658865 1205517014654025152468504463580506313458 8608222558860101416510465120551801465402 5152468504463580506313458860822255887010 1316510470120501901465402515246850446358 0506313458860822255887010131651047012050 2001468402515246850446358050631345886082 2255887010131651048012040212146845252024 6850446358050631345886082225588701013165 1048012040224146845252024755044635805063 1345886082225596701013165104801204023614 6845252024755044635806063345886582175596 7510126651048012040 PT SPB-B-5 Vpitchdw[mm]numberofgroovestypem[mm]l[mm ]W[mm]z[mm])

10 6011a4035*251021a4048*4447111a4535**2510 21a4548**44431a4567**6347511a4535251021a 454844431a45676348011a5035251021a5048444 31a506763441a528682451a5810510148511a503 5251021a504844431a526763441a588682451a58 10510149011a5035251021a504844431a5867634 42a6550823252a6550101519511a5235251021a5 54844431a586763442a6550823252a6550101511 0011a5235251021a554844431a586763442a6550 823252a655010151106145035251024554844432 a6550631342a6550823252a67501015111214553 5251024604844432a6550631342a7550823252a7 55010151118145535251024604844432a7550631 342a7550823252a7550101511251455352510246 04844432a75506313457550823255b7550101516 2a80601206013214603525102460504463575506 31345805082325580601014165806012060* note: the diameter at the bottom of the groove is 32 mm** note: the diameter at the bottom of the groove is 43 mm 2A3 LWZdwM MdwZLW 4 WLZdwM 5 dwM ZWL5B 1 AMdwZWL Pulleys and PT SPB-B-5 Vpitchdw[mm]numberofgroovestypem[mm]l[mm ]W[mm]z[mm]25018704525202875504463988606 33499665821754a104751012664a104801204028 0187545252028755044639886063349966582175 9104751012669104801204030018755025252880 5044639886063349966582175910475101266910 4801204031528886044163988606334996658217 59104751012669120901203035518a8050252528 8860441639966063349966582175910475101266 9120901203040028a8860441638a966563249a10 47582759a112851011669a1201001202045028a8 860441638a966563249a1047582759a112851011 669a1201001202050028a9665442138a10475631 248a1128582359a120901011169a128105120155 6028a9665442138a10475631248a1128582359a1 20901011169a12810512015pitchdw[mm]number ofgroovestypem[mm]l[mm]W[mm]z[mm]