HTD - Timing Belt Drives

1 HTD - Timing belt DrivesDirezione commercialeSIT vendite Viale A. Volta, 2e magazzino centrale 20090 Cusago (MI) - I Head officeTel. + central warehouseFax + : Export:Tel. + + : Via G. Carminati, 15 Manufacturing plant24012 Brembilla (BG) - ITel. + + - 03/13 (500 - 03/13) mustang SpeedMustang TorqueCover mustang - SIT Cusago 07/03/2013 14:14 Pagina Timing belt DrivesSIT Timing belts are available in the following versions: HTD Standard Basic belt for all purposes mustang Speed belt for high speed Drives mustang Torque belt for high torque drivesOther tooth shapes are also available on Timing belts are modern drive elements made of high-qualitymaterials and produced according to the latest manufacturingtechnology. They represent the experience of SIT acquiredover many years in synchronous power transmission systems andconsequentially a completely new series of products for differentapplication areas.

2 The tooth shape is the HTD profile according to ISO profile has been appreciated for many years in the mostdiverse industries and it is famous for its exceptional transmission is much higher if compared to the classic tra-pezoidal profile in inch graduation. The circular-arc tooth profile provides superior tooth jump resi-stance and the teeth mesh very smoothly . The noise level isremarkably reduced if compared to the classic trapezoidal belts. SIT Product rangeTo completely cover the very wide range of services, SIT Timingbelts are available in 4 different series:Standard HTD 3M, 5M, 8M, 14 MMustang Speed 3M, 5M, 8M, 14 MMustang Torque 8M, 14 MSIT Timing belts are applicable to all kinds of industrial are used in precision mechanics, office machines, homeappliances, in the graphic industry, in the machine tool industryand in the conveyor technology.

3 New applications of these belts occur every day, throughthe replacement of maintenance intensive drive chains orthrough energy- optimized drive concepts which replace force-coupled widthsHTD 3M and mustang S 3M6 - 9 - 15 mmHTD 5M and mustang S 5M9 - 15 - 25 mmHTD 8M, mustang S and T 8M20 - 30 - 50 - 85 mmHTD 14M, mustang S and T 14M40 - 55 - 85 - 115 - 170 mmSpecial profilesFor specific applications there are always special solutions. Thisapplies also for the Timing belt program of SIT addition to the HTD profile, also the STD and GTR profilesare technical support please contact our technical department. mustang EN_Mustang DE nuovo 07/03/2013 14:58 Pagina CompositionEssential belt components are the following ones:1. Back side of the belt2. Traction rope3. belt tooth design4. Covering fabricOnly high-quality materials are used to produce the SIT TimingBelt and in the different versions there is a different combinationof components to guarantee the specific Tooth shape HTDBelt compositionMain dimensions h th stBelt TypePitchTooth heightTotal thickness and toleranceHTDt [mm]ht [mm]hs[mm]+/- [mm]3M31,22,40,205M52,13,60,258M83,45,60 ,4014M146,110,00,60 belt Type ComponentsTooth shape HTDM ustangSpeed HTDM ustangTorque HTDC overCRCRNBRT ension MembersGlass cordGlass cord S Aramid cordMoulded teethCRCRNBRF abricPolyamidPolyamid xS Polyamid xTTraction ropeCovering fabricBelt toothBelt back sideMustang EN_Mustang DE nuovo 07/03/2013 14:58 Pagina descriptionExample.

4 SIT Timing belt HTD 800 - 8M 50 Available belt lengths of 3M pitch HTD Standard and mustang Timing Belts cover a wide length range, beginning from111mm for HTD 3M to for HTD 14M and all require-ments of the design engineers are thus satisfied. From precision mechanics to heavy duty equipments, SIT always offer you economical solutions for every Pitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethz1113729498525175117393001005371791 2943312104564188141473181065701901444832 1109597199150503301106002001565233611260 6202159533391136122041685635711963321117 4583631216692231775937812670823618060384 1287112371866238712973824619264390130753 2512016739313182227420468396132843281210 7042014088229421371432144945315216724351 4596032021973447149100233422575474158104 1347240804771591068356246824801601071357 2528448616211253752558548916311703902618 7495165117639226789501167124541527090513 1711500500285955221741569523 belt length 800 mmTooth pitch 8 mmBelt width 50 mmCHD 800 - 8M50 belt length programAvailable belt lengths of 3M pitchHTD Standard and mustang S BeltsATTENTION!

5 Lengths printed in cursive characters are custom-made production. Please note the minimum order EN_Mustang DE nuovo 07/03/2013 14:59 Pagina belt lengths of 5M pitchHTD Standard and mustang S BeltsSIT Pitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethz2004050010086017222545525105890178 2655353510790018027555550110925185295595 6511395019030060600120100020033066615123 1050210350706201241125225360726301261200 2403757563512712702543857766513314202844 0080700140150030040581710142159531942585 7401481690338435877551511790358450908001 60180036046092835167200040047595840168 Available belt lengths of 8M pitchHTD Standard and mustang S/T BeltsPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethz2883677697148018530438784981520190 3524480010016002003764788011016162023844 8912114176022040050920115180022541652960 1202000250424531040130208026047259112014 0224828148060116014524003005607012001502 6003256007512801602608326624781304163280 0350640801328166300837665682136017032804 1068886142417834084267209014401803808476 ATTENTION!

6 Lengths printed in cursive characters are custom-made production. Please note the minimum order ! Lengths printed in cursive characters are custom-made production. Please note the minimum order EN_Mustang DE nuovo 07/03/2013 14:59 Pagina Available belt lengths of 14M pitchHTD Standard and mustang S/T BeltsPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethzPitch lengthLw[mm]N of teethz9666921001503500250105075231016536 6826211908524501753850275140010025901854 3263091610115280020045783271778127315022 518901353360240 Special profilesMain dimensionsProfileTypePitcht [mm]Tooth heightht[mm]Total thicknesshs[mm]STD8M83,05,3 GTR8M83,45,6 GTR14M146,110,0t h th s STDA ttention!The STD profile in version mustang XS is available in 8 mm GTR profile in version mustang F GTR is available in 8 mm and 14 mm belt lengths are available on request.

7 Please note the minimum order Timing belts Weight per meter ms[kg/m mm]Type3M5M8M14 MStandard HTD2,4 x 10-33,6 x 10-35,5 x 10-310,3 x 10-3 mustang Speed2,5 x 10-33,5 x 10-35,6 x 10-310,2 x 10-3 mustang Torque--4,15 x 10-38,2 x 10-3 Values are required to calculate the initialbelt tension. see page 47 mustang EN_Mustang DE nuovo 07/03/2013 14:59 Pagina and width tolerances are set in ISO tolerances will have to be PitchBelt width[mm]Length toleranceup to 840 mm> 840 mmup to mm> mm3 mm6+ 0,6 - 0,6+ 0,6 - 0,6+ 0,8 - 0,8915+ 0,8 - 0,8+ 0,8 - 0,8+ 0,8 - 0,85 mm9+ 0,6- 0,6+ 0,6- 0,6+ 0,8 - 0,815+ 0,8 - 0,8+ 0,8 - 0,8+ 0,8 - 0,8258 mm20+ 0,8 - 0,8+ 0,8 - 1,3+ 0,8 - 1,33050+ 1,3 - 1,3+ 1,3 - 1,3+ 1,3 - 1,585+ 1,5 - 1,5+ 1,5 - 2,0+ 2,0 - 2,014 mm40+ 0,8 - 1,2+ 1,2 - 1,2+ 1,2 - 1,655+ 1,2 - 1,2+ 1,2 - 1,6+ 1,6 - 1,685+ 1,6 - 1,6+ 1,6 - 2,0+ 2,0 - 2,0115+ 2,4 - 2,4+ 2,4 - 2,8+ 2,4 - 3,2170 Length[mm]Tolerance+/- [mm]< 1500,15151 - 2500,20252 - 4000,23401 - 5500,25551 - 8000,30801 - 10000,331001 - 12500,381251 - 15000,401501 - 17500,431751 - 20000,452001 - 22500,48> 2250+ 0,10 mm / mPulley for belt length measure as by ISO 13050 Strenght [N]

8 Based on belt width [mm]Pitch [mm]Nr. of teethCircumference[mm]691520253040505585 115170330904376 measurement chart 1 Pr fkraft [N] 2 Achsabstand [mm] 1 - Test force [N]2 - Distance between centers [mm] mustang EN_Mustang DE nuovo 07/03/2013 14:59 Pagina , low maintenance and low noise are also advantagesof the SIT Timing belt Drives , they resist against environmental in-fluences and are extremely long-lasting if properly dimensioned. SIT Timing belts in connection with SIT Timing pulleys form a drivesystem that perfectly transmits the rotary movement with angularaccuracy. The perfect coordination of the belt and the pulleys pro-vides best tooth jump resistance and smooth drive running. Innovative combination of materials allow very compact andeconomic Drives with high power density and excellent efficiency.

9 SIT ParameterBelt typeHTDS tandardMustangSpeedMustangTorqueMax linear speed [m/s]505020 Working temperaturet min [ C] / t max [ C]- 20+ 100- 20+ 100- 20+ 100 Conductivity as by ISO 9563noyesyesOil resistance++++Ozone resistance++++++Exceeding the maximum rotation speed limits can cause noticeable belt wear. mustang TorqueThe mustang T shows best performance when its aramid cord isstretched like a steel cable. It is recommended for high tensilestrength and maximum torque. Excellent chemical bond with theNBR compound. Top level wear resistance of the tooth coveringfabric. No problems at speeds of up to 20 ForceIn higher temperature ranges and by speeds of up to 40m/s there is no better choice than a high dynamic choosing SIT Timing belts you made the right choice. Accordingto the case of application, you can select among the available ver-sions to obtain the best performance.

10 Following paragraph willhelp you make the right choice. HTD Standard Timing BeltThis Timing belt is suitable for all cases requiring medium powertransmission. Excellent quality-price ratio, the HTD Timing belt isstrong, economic and versatile up to a maximum rotation speedof 50 SpeedThis is the heavy-duty product range. The specially prepared ten-sion carrier Glascord S provides an excellent adhesion to Elasto-mer as well as a very high breaking strength. The Chloroprencompound with increased tooth shear strength provides long la-sting and safe power transmission even at high bending frequen-cies. The high power density allow for compact Drives with besteconomic efficiency. The belts are also electrically conductive ac-cording to ISO all this at 180 km/h. Please fasten seat belts! Timing belt Selection mustang EN_Mustang DE nuovo 07/03/2013 14:59 Pagina SIT Timing belt HTD3M - Power rating P in kW for width 6 mm and smaller pulleyNr.