Air Tube Disc Clutches And Brakes - CLUTCH ENGINEERING
Air Tube Disc Clutches and BrakesHigh Torque ClutchesRingVery Low InertiaDrive Plate AssemblyBonded or RivetedShimsHigh TorqueAir-TubeFloating PlatePressurePlateHubAirtube HoldingPlateDuctile CenterPlateGrooved plingSelection RequirementsWichita High Torque Clutches provide thehighest torque to size ratios of any WichitaClutch. They provide smooth controlled startsand stops and are designed for m inimumpower loss due to low rotating inertia. Extremely fast response No lubrication High torque to size ratio Low rotating inertia44Wichita Clutch 800-964-3262To properly select a High Torque Clutchand Low Inertia Brake, the followinginformation must be determined.1. Torque necessary to do the work (clutch)2. Rotating inertia to be stopped and started3. Heat generated by each stop/start4. Torque necessary to stop inertia (brake)5. Shaft size. P-1100-WC10/14
Air Tube Disc Clutches and BrakesSelection ExampleDataRated Tonnage . . . . . . . . . . . . . . . . . . . As Re quiredCrankshaft Speed . . . . . . . . . . . . . . . . . 30 RPM(Continuous Run)Clutch-Brake Shaft RPM . . . . . . . . . . . . 204 RPMCrankshaft Speed . . . . . . . . . . . . . . . . . 30 RPMBDegrees of Crank to start . . . . . . . . . . . 90 Degrees of Crank to stop . . . . . . . . . . . 90 Connecting Rod Length b . . . . . . . . . 36 in.Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . 6 in.1/2 of Press Stroke (throw) a . . . . . . . 3 in.WR2 of Parts on Backshaft . . . . . . . . . . 78.2 lb.ft.2WR2 of Parts on Crankshaft . . . . . . . . . 39,091 lb.ft.2Material Shear Stress . . . . . . . . . . . . . . 45,000 PSIBlade Width . . . . . . . . . . . . . . . . . . . . . . 60 in.Shaft Size . . . . . . . . . . . . . . . . . . . . . . . 4 in.Maximum Material to be Sheared . . . . . xAir Pressure Available . . . . . . . . . . . . . . 100 PSICalculationsTorque @ Crank (Material Shear Stress) (x) (Blade Width) (Torque Arm)Torque arm y (x) (tan α)c a b–x 3 36 – .25 38.75 in.Cos αb 2 c 2 – a22 bc(36)2 (38.75) 2 – (3) 2 (2) (36) (38.75) .99948 α 1.8478 Torque Arm y (c) (tan α) (38.75) (tan 1.8478 ) (38.75) (.03226) 1.25 in.Torque @ Crank (Material Shear Stress) (x) (Blade Width) (Torque Arm) (45,000) (.25) (60) (1.25) 843,750 lb.in.Torque @ Clutch (Torque @ Crank) 204 RPM 843,750 30 RPMClutch RPMCrankshaft RPM 124,081 lb.in.P-1100-WC10/14.Wichita Clutch 800-964-326245
Air Tube Disc Clutches and BrakesHigh Torque ClutchesClutch SelectionPer the application factors on page 23 a “BackGeared Press is ‘Group C’.”HP 100 RPMTorque630 124,081 197630The preliminary clutch selection based on124,081 lb.in. and 197 HP/100 RPM is anATD-224 Low Inertia High Torque Clutch.(page 48)A Low Inertia High Torque Clutch was chosenbecause of the continuous duty (non-cyclic)operation having a rel a tive ly low heat HPrequirement.ATD-224 Low Inertia High Torque Clutch 280 HP/100 RPMRated Torque 480,000 lb.in @ 100 PSIRequired clutch air pressure is:PSI Estimated time to startStart Angle60 360 Crankshaft RPM90 360 P1 P2 LN k u Actual required clutch PSI 26 PSI minimum is required.This application has 100 PSI available.Contact velocity of rotating disc is:Vc (Diameter of Center Plate) (π) (RPM)12 in.ft.24ft.(π) (204) 1,28212min.Line pressure to clutchRequired pressure to clutchNatural logInflation coefficient(ATD-224 H.T. @ 100 PSI)2,600For ATD-224 H.T. Clutch @ 100 PSI2.5LNt Clutch required torque x (100 PSI)Catalog rated torque @ 100 PSI124,081 x (100 PSI)480,000 0.5 sec.Time to 26% of line pressure.t PSI6030 [[P1P1- P21u]kLN[100100 - 26]]2,60012.50.027 secondsClutch will be fully inflated at 90 of crank shaftrotation.Clutch exhaust time @ 100 PSI E .078(page 52).Note:This application example is for preliminarysizing only. Contact a Wichita Sales Engineeror the factory for final selection.(Ductile iron is not required, see page 23).Maximum bore for ATD-224 High Torque LowInertia Clutch 7 in.Check clutch inflation time for 90 start angle (seepage 52, PSI pressure curves)46Wichita Clutch 800-964-3262. P-1100-WC10/14
Air Tube Disc Clutches and BrakesHigh Torque ClutchesLow Inertia Brake SelectionTo properly size a brake, the total rotating inertiareflected to the clutch and brake shaft must beknown.Alternate shaft WR2referred to clutch shaftAlternate shaft WR 2 39,091shaft RPM[ Alternateclutch shaft RPM ][ 20430 ]22The actual 12deceleration torque204[ 1035.632. 2 ] [ 9.5 ] 16,575 lb. in.Required air pressure is:Brake required torque x (100 PSI)Brake Catalog rated torque @ 100 PSI16,575 lb. in. x 10055,250 lb. in. 30 PSI minimumBThis application has 100 PSI available.WR2 referred to 845.4 lb.ft2clutch-brake shaft @204 RPMTotal inertiaBack shaft WR2 78.2 lb.ft.2Clutch hub &drive plate WR2 fromSpecification Table 101.0 lb.ft.2Estimate brake WR2 101.0 lb.ft.2(assume same as clutch)Total WR2 referred 1,125.66 lb.ft.2to clutch-brake (Estimated)Estimated time to stop:Start Angle 360º [[60] [ CrankshaftRPM ]90º 60 .5 sec.] [ 30 ]360ºThe deceleration torque is:WR2Brake RPMT 1232.29.5(t)[ 12] []204[ 1125.632.2 ] [ 9.5 (.5) ]Deceleration Torque 18,015 lb.in.The average heat HP each stop(Brake Torque) x RPM x 1/263,00016,575 x 204 x .563,000 26.8 HPFriction area necessary to absorb heat Heat HP26.82 39 in.7 .7heat HPAbsorption rate for .5 sec.(see page 174 )An ATD-214 Low Inertia Brake has 316 in.2 offriction lining available to absorb heatgenerated by stopping. Maximum bore foran ATD-214 Low Inertia Brake is 4-1/8 inches.Based on the given application data andthe following calculations, an ATD-224 LowInertia High Torque Clutch and ATD-214Low Inertia Brake have been selected ashaving sufficient torque and heat dissipationcapacity with minimum diameter andsufficient bore capacity.Note:These application examples are forpreliminary sizing only. Contact aWichita Sales Engineer or thefactory for final selection.The HP / 100 RPM for this application is:HPTorque (lb.in.)18,015 29 HP/100 RPM100 RPM630630Consult the Specification Table on pages 36-37to select a brake based on torque and HP/100 RPM. Under “Duty C”, an ATD-214 brakehas 32 HP/100 capacity and 55,250 lb.in.torque. The rotating inertia of an ATD-214Low Inertia Brake is 11 lb.ft.2. Therefore, theactual rotating inertia reflected to brake is1035.6 lb.ft.2.P-1100-WC10/14.Wichita Clutch 800-964-326247
Air Tube Disc Clutches and BrakesHigh Torque C 1046-004-100-400-0HTC 2046-004-200-802-0HTC 1066-006-100-400-0HTC 2066-006-200-400-0HTC 1086-008-100-407-0HTC 2086-008-200-417-0HTC 3086-008-300-400-0HTC 1116-011-100-408-0HTC 2116-011-200-422-0HTC 3116-011-300-406-0HTC 1146-014-100-405-0HTC 2146-014-200-403-0HTC 3146-014-300-411-0HTC 1166-016-100-403-0HTC 2166-016-200-402-0HTC 3166-016-300-401-0HTC 1186-018-100-400-0HTC 2186-018-200-400-0HTC 3186-018-300-400-0HTC 1216-021-100-400-0HTC 2216-021-200-401-0HTC 3216-021-300-400-0HTC 1246-024-100-401-0HTC 2246-024-200-405-0HTC 3246-024-300-401-0HTC 4246-024-400-400-0HTC 1276-027-100-404-0HTC 2276-027-200-411-0HTC 3276-027-300-402-0HTC 1306-030-100-400-0HTC 2306-030-200-408-0HTC 3306-030-300-415-0HTC 1366-036-100-400-0HTC 2366-036-200-409-0HTC 3366-036-300-404-0HTC 1486-048-100-400-0HTC 2486-048-200-406-0HTC 3486-048-300-403-0Slip Torque Capacitylb.in.80 05,664,000Nm100 ,720,0007,080,0005.5 9,000628,5007 ,235Duty FactorsHP/100 1203,3601,6802,6901,3455,3802,6908,0704,035Max. BoreRect. )(203)(235)(455)Maximum Air Pressure is 100 PSI / 7 BAR.48Wichita Clutch 800-964-3262. P-1100-WC10/14
Air Tube Disc Clutches and BrakesHigh Torque rancein.HTC 1041/32-1/16Max. SpeedBalance RegHighSpeed Speed SpeedRPMRPMRPM*HTC 204NA2,1002,600*1/32-1/16HTC 1061/16-3/32SweptAreain.2AirtubeVolumeTotal Clutchin.3 (cm 3 )Wt.WR 2/ J mr 2NewWornlb.(kg)lb.ft.2(kgm 180(81.6)45.0(1.897)55738201724 6)290(131.5)122(5.14)HTC 206NA2,1002,600*3/32-5/32 78HTC 1081/16-1/8HTC 2083/32-5/32HTC 3081/8-3/16530112(82)(492)168HTC 1111/16-1/8114HTC 2113/32-5/32HTC 3111/8-3/16848228(131)(787)342HTC 1141/16-1/8158HTC 2143/32-5/32HTC 3141/8-3/161275316(197)(1,229)474HTC 1161/16-1/8228HTC 2163/32-5/32HTC 3161/8-3/161056455(164)(918)683HTC 118(0.658)1/16-1/8264HTC 2183/32-5/32HTC 3181/8-3/16792HTC 1213/32-5/32362HTC 2211/8-3/16HTC 3215/32-7/32HTC 1243/32-5/32HTC b & Center PlateWt.WR2/ J mr 2(kg)lb.ft.2(kgm 26.77)260(117.9)110(4.6)(6.9)HTC 5.1)163HTC 4243/16-1/42,296 1,291(586)917(38.66)466(211.4)209(8.8)HTC 1273/32-5/32(449)785(33.1)168(76.2)98(4.1)HTC 2271/8-3/16HTC 3275/32-7/32HTC 1303/32-5/32HTC 2301/8-3/16HTC 330HTC 136HTC 2365007001,090*730989613231,460 170.6)368(15.5)1/8 3,323)25,7034506201,000*HTC 336375525800*5/32-7/32HTC 1481/8-1/4HTC 2487/32-9/32275380580*HTC 3483/16-5/162,0102001,4304,020 8,497(3,277) 9(207)* Consult Factory for Special Assembly Number.P-1100-WC10/14.Wichita Clutch 800-964-326249B
Air Tube Disc Clutches and BrakesHigh Torque ClutchesComponent Parts1. Hub2. De mount able Backplate3. Socket Head Capscrews4. Ring6. Grooved Friction Disc(grooved on one side)7. Center Plate9. Grooved Friction Disc21. Release Springs10. Pres sure Plate22. Flexloc Nut11. Pan cake Air Tube23. Internal Roto-Coupling12. Shims24. ”O“ Ring13. Air Tube Holding Plate25. Snap Ring14. Sock et Head Capscrews26. Flat head Socket Capscrew20. Hex Head Capscrew27. Slot ted Flush Nut50Wichita Clutch 800-964-3262. P-1100-WC10/14
Air Tube Disc Clutches and BrakesHigh Torque ClutchesInflation CoefficientsModel Inflation Coefficients Operating Air PressureSize 50 PSI75 PSI100 PSIATDKUK UK U111393,0003151,000 3211393,0003151,000 35,100 45,100 411449,000330,000 317,600 321449,000330,000 317,600 31185,7002.85,700 2.82185,7002.85,700 2.87,500 3B7,500 312410,40035,200 2.72,600 2.522410,40035,200 2.72,600 2.51309402.21,070 2.2590 22309402.21,070 2.2590 213677,0003.558,000 3.544,000 3.523677,0003.558,000 3.544,000 3.51481,2002.51,240 3.5800 2.52481,2002.51,240 3.5800 2.5Exhaust CoefficientsModelExhaust Coefficients Operating Air PressureSize 50 PSI 75 PSI 100 0.1362.4111.152.5* 1.88 x 10 6P-1100-WC10/14.Wichita Clutch 800-964-326251
Air Tube Disc Clutches and BrakesAir System DataPSI pressureInflationExhaustClutch air pressure during inflation can beclosely estimated by the following:Clutch air pressure during exhaustcan be closely estimated by the fol low ing:()Clutch pressure P1 1 – 1PSIueKt(inflation)Clutch pressure (P1) (R) (E-t)v PSI(exhaust)This equation is accurate from 5% upto 95% P1.R, E and V coefficients for specific clutchand air pressure from Spec i fi ca tionTable on page 51.P1 Line pressure to clutch PSIK and U coefficients for specific clutch andair pressure from Spec i fi ca tion Table onpage 51.e Naperian base logto Time at initiation of signal forinflation sec.td Time delay of air system – sec.52Wichita Clutch 800-964-3262te Time to exhaust E from Spec i fi ca tionTable on page 51.t Time variable – seconds. In the ex haust equa tion “t” cannotexceed the value of “E” sec.Shown are some of the air systems usedon Wichita clutches. These systems are ac cept able for remote op er a tion where clutchreaction time is not important. Faster clutchre ac tion time is ac com plished as in di cat ed inthe di ag ram by lo cat ing the flow control valve,if re quired, and the so le noid valve as close aspossible to the roto-cou pling. Where clutchesare located on long shafts, the use of quickrelease valves on the clutch will fa cil i tate fasterclutch response. P-1100-WC10/14
Air Tube Disc Clutches and BrakesAir System DataPSI pressureOverlapA typical clutch-brake torque curve for a single backshaftpress (cyclic ap pli ca tion) would appear as shown below.BTime (sec.)tOc time at which disengaged clutchreceives signaltCc time of clutch en gage mentt1c time of clutch full inflationtOB time at which disengaged brakereceives signaltBc time of brake engagementt1B time of brake full exhaustt2 overlap time at which clutch and brakeare both engagedP-1100-WC10/14.Wichita Clutch 800-964-326253
Air Tube Disc Clutches and BrakesHigh Torque ClutchesSizes 4-2454Wichita Clutch 800-964-3262. P-1100-WC10/14
Air Tube Disc Clutches and BrakesHigh Torque ClutchesSizes 4-24Dimensions:inches (mm)ModelBCSize ATDAHole CirclePilotDHTC 10427.386.8754.375 / 4.3786.38HTC 2042(187.5)(174.63)(111.13 / 111.20)(162.1)HTC 10638.758.0007.377 / 7.3798.81HTC 206(222.3)(203.20)(187.38 / 187.43)(223.8)HTC 108112.1311.1258.375 / 8.37811.13HTC 2081(308.1)(282.58)(212.73 / 212.80)(282.7)HTC 111116.0014.75011.375 / 11.37814.75HTC 2111(406.4)(374.65)(288.93 / 289.00)(374.7)HTC 114118.7517.50014.375 / 14.37817.50HTC 214(476.3)(444.50)(365.13 / 365.20)(444.5)HTC 3143HTC 11621.2520.00016.250 / 16.25320.00HTC 216(539.8)(508.00)(412.75 / 412.83)(508.0)HTC 316HTC 11823.2522.00018.250 / 18.25322.00HTC 218(590.6)(558.80)(463.55 / 463.63)(558.8)HTC 318HTC 12127.0025.50021.375 / 21.37824.88HTC 221(685.8)(647.70)(542.93 / 543.00)(632.0)HTC 321HTC 12430.0028.75024.375 / 24.37828.00HTC 224(762.0)(730.25)(619.13 / 619.20)(711.2)HTC 32429.0026.7525.500 /25.50328.00HTC 4243(736.6)(679.5)(647.70 / 647.78)(711.2)E3.38 (85.9)2.50 (63.5)5.03 (127.8)6.25 (158.8)6.21 (157.7)7.52 (191.0)7.82 (198.6)9.63 (244.6)8.39 (213.1)10.50 (266.7)10.00 (254.0)9.16 (232.7)11.16 (283.5)13.06 (331.7)9.28 (235.7)11.20 (283.5)12.81 (325.4)10.19 (258.8)11.83 (300.5)14.19 (360.4)10.06 (255.5)12.38 (314.5)14.69 (373.1)FG1.00 (25.4)0.06 (1.5)1.88 (47.8)0.00 (0.0)2.00 (50.8)0.00 (0.0)3.25 (82.6)0.06 (1.5)1.50 (38.1)0.50 (12.7)2.88 (73.2)2.00 (950.8)0.50 (12.7)3.75 (95.3)3.75 (95.3).13 (3.3)4.50 (114.3).38 (9.7)4.50 (114.3).38 (9.7)2.75 (69.9)4.75 (120.7)0.38 (9.7)6.63 (168.4)2.75 (69.9)4.75 (120.7)0.44 (11.2)6.50 (165.1)2.88 (73.2)0.69 (17.5)5.13 (130.3)0.75 (19.1)7.13 (181.1)0.75 (19.1)3.50 (88.9)0.38 (9.7)3.50 (88.9)0.75 (19.1)5.13 (130.3)0.75 (19.1)H2.50 (63.5)3.19 (81.0)4.53 (115.1)5.75 (146.1)4.37 (111.0)5.68 (144.3)5.44 (138.2)7.25 (184.2)6.06 (153.9)7.88 (200.2)7.88 (200.2)6.78 (172.2)8.66 (220.0)10.69 (271.5)7.16 (181.9)9.03 (229.4)10.94 (277.9)7.56 (192.0)9.69 (246.1)12.06 (306.3)8.38 (212.9)10.69 (271.5)13.00 (330.2)15.64 (397.3)8.38 (212.9)13.81 (350.8)0.72 (18.3)Dimensions: inches (mm)ModelSize ATDHTC 104HTC 204HTC 106HTC 206HTC 108HTC 208HTC 111HTC 211HTC 114HTC 214HTC 314HTC 116HTC 216HTC 316HTC 118HTC 218HTC 318HTC 121HTC 221HTC 321HTC 124HTC 224HTC 324HTC 4243LI.38 (9.7).63 (16).94 (23.9).82 (20.8).81 (20.6).75 (19.1)1.06 (26.9)1.12 (28.4)1.06 (26.9).81 (20.6).94 (23.9)1.25 (31.8)1.25 (31.8)1.13 (28.7)1.44 (36.6)1.50 (38.1)1.31 (33.3)1.44 (36.6)1.13 (28.7)1.38 (35.1)1.56 (39.6)1.56 4.13 (104.9)3.63 (92.2)4.63 (117.6)0.13 (3.3)6-9/32 (7.1)2.88 (73.2)2.58 (65.5)0.38 (9.7)5/8-18NF0.06 (1.5)4-11/32 (8.7)4.19 (106.4)2.69 (68.3)0.56 (14.2)5/8-18NF0.25 (6.4)6-17/32(13.5)5.38 (136.7)3.62 (91.9)0.50 (12.7)1/4 NPT0.38 (9.7)6-11/16 (17.5)7.00 (177.8)4.12 (104.6)1.13 (28.7)1/2 NPT.38 (9.7).38 (9.7).13 (3.3)8-9.44 (239.8)9.44 (239.8)9.50 (241.3)5.62 (142.7)5.50 (139.7)6.66 (169.2)1.13 (28.7)0.63 (16.0)—1/2 NPT1.38(35.1)0.38 (9.7)12 -10.50 (266.7)6.00 (152.4)0.63 (16.0)1/2 NPT1.38(35.1)4.00(101.6)0.38 (9.7)12 -11/16 (17.5)21/32 (16.7)5/8-11NC11/16 (17.5)21/32 (16.7)21/32 (16.7)21/32 (16.7)11/16 (17.5)21/32 (16.7)12.50 (317.5)7.00 (177.8)0.63 (16.0)1/2 NPT2.00(50.8)4.75(120.7)0.31 (7.9)12 -21/32 (16.7)14.50 (368.3)9.00 (228.6)0.75 (19.1)1/2 NPT2.00(50.8)6.00(152.4)0.25 (6.4)12 -21/32(16.7)14.50 (368.3)9.00 (228.6)0.75 (19.1)1/2 NPT2.00(50.8)6.00(152.4)0.13 (3.3)12 -5/8-11NC14.50 (368.3)9.00 (228.6)—1/2 NPT2.00 (50.8)6.00 (152.4)Note: For mounting, use socket head capscrews conforming to the ASTM-574-97a.1 Non-Ventilated center plate, “center plate is solid”.2 Drive plate assembly, “friction material is attached to a drive plate”.3 Less backplate.(Consult factory for drawing before final layout.)P-1100-WC10/14.Wichita Clutch 800-964-326255B
Air Tube Disc Clutches and BrakesHigh Torque ClutchesSizes 27-4856Wichita Clutch 800-964-3262. P-1100-WC10/14
Air Tube Disc Clutches and BrakesHigh Torque ClutchesSizes
Air Tube Disc Clutches and Brakes Selection Requirements To properly select a High Torque Clutch and Low Inertia Brake, the following information must be determined. 1. Torque necessary to do the work (clutch) 2. Rotating inertia to be stopped and started 3. Heat generated by each stop/start 4. Torque necessary to stop inertia (brake) 5. Shaft size
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2) Braced tube 3) Bundled tube 4) Tube-in-tube 5) Tubed mega frames A.Tube in Tube Structures The term "tube in tube" is largely self-explanatory in that second ring of columns, the ring surrounding the central service core of the building, are used as an ineer framed or braced tbe. The purpose of the second tube is to increase
A Broad Range of Clutches, Brakes and Clutch/Brake Combinations Warner Electric packaged performance products are electric clutches and brakes, assembled and aligned at the factory, to offer maximum start-stop performance combined with quick and easy installation. They are offered as clutches, brakes, and clutch/brake combinations in a wide range
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ic-disc audit guide lb&i-04-0212-003 1. introduction 1. purpose 2. format 3. limitation 2. a general overview of the disc 1. introduction to the disc 2. how the disc return is processed and procedures for requisitioning 3. summary of the disc rules. 3. the disc law and major concepts 1. taxation of a disc - irc § 991 1.
frame tube, braced tube, bundled tube, tube in tube, and tube mega frame structures. The tube in tube structures and tube mega frame structures are the innovative and fresh concept in . These tubes are interconnected by system of floor slabs and grid beams.as the columns of outer and inner core tubes are placed so closely; it is not seen as a .
Agile Development and Scrum Scrum is, as the reader supposedly knows, an agile method. The agile family of development methods evolved from the old and well- known iterative and incremental life-cycle approaches. They were born out of a belief that an approach more grounded in human reality – and the product development reality of learning, innovation, and change – would yield better .
