Power Transmission Components Division Roller Chain

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U.S. Tsubaki, Inc.Power Transmission Components DivisionRoller ChainCouplings Connect quicklyand easily Handle high torque Keep your profitsturning

Roller Chain CouplingsThe Quality ConnectionRoller Chain Couplings from U.S. Tsubaki are your connection to betterprofits and productivity. We’ve combined the best in the business —high-quality Roller Chain with a pair of specially cut, hardened-toothSprockets — to create a powerful, flexible coupling that keeps youroperation running at peak performance.Sprocket(induction hardened teeth)For clean areas and light loads,choose our Nylon Chain Couplings. Assembledcouplings are also available upon request.Double StrandRoller Chain(coupling chain)Connecting PinMake the ConnectionSpring ClipFarming. mining. metal manufacturing.and more. When you need toconnect two shafts, Roller Chain Couplings from U.S. Tsubaki are the right choice.You can’t make a better match! Simple to InstallSave valuable production time by getting your lines up and running fast. Simple construction makes our units easy to install, remove, and replace. Our unique, single-pin connection of the chain keeps downtime — and hassles — to a minimum. One clip is all it takes! Compact and PowerfulRemarkably efficient construction transmits torque easily by apportioning it over the entirestrand of roller chain and all the sprocket teeth. You get the power you need to drive yourbusiness at an economical unit price. Flexible for Easy AlignmentClearances within the chain itself and between the chain and the sprocket teeth make ourRoller Chain Couplings flexible and responsive. They align quickly and accurately and protect against overheating and abrasion caused by expansion or contraction of the shaft. Yousave time and money on adjustments and repairs. Built to LastGet the only flexible coupling on the market built to the quality standards of U.S. Tsubaki.Special double-strand roller chain with single-pin connector. Precision hardened sprocketswith our standard dual set screw locking arrangment. The durability you need to handlehigh speed and torque, keeping maintenance and replacement costs low.❶

Coupling Covers Add Safetyand EfficiencyCoupling Covers improve the safety, cleanliness, and overallperformance of your system. Safe and smart, they protect the unitfrom outside elements and provide better workplace operation. Split-type construction provides easy installation and inspection. Continuous lubrication keeps lines running smoothly withminimum maintenance, extending service life. Smooth-surface design covers entire unit with no projecting bolts,providing a neat appearance and safe operation.Reduce Your Hassles witha Single, Reliable SourcePartner with U.S. Tsubaki for savings and convenience. You benefit from the power of one: One call to get the highest quality power transmission products available One order to track One delivery to handle One invoice to processTime is money. Reduce your processing time and increase your profits with a single call to U.S. Tsubaki.The Key to Quick ConnectionsKeep downtime to a minimum with our unique single-pinconnection — available only from U.S. Tsubaki. A single pin holdsthe chain in place for easy installation. You spend less time settingup your equipment and can quickly get production rolling.❷

Selection GuidelinesRequired Information1. Number of hours of daily operation2. Classification of load and prime mover3. Horsepower or required torque to be transmitted and shaft speed in revolutions/minute4. Diameter of both shaftsMethod for SelectionTable 1. Service Factor1. Based on the operating conditions, determine the ServiceFactor, using Table 1.2. Obtain the design horsepower by multiplying thehorsepower to be transmitted by the Service Factor.Load ClassificationUniform load, little shock, lowstarting torque, no reversingModerate fluctuation of load,moderate shock, no reversing(for most common applications)Large fluctuations of load, heavyshock, reversal under load, fullload starting3. With the required rpm, choose the coupling that satisfies thehorsepower from the Horsepower Rating, shown in Table 2.4. When the required shaft diameter exceeds the maximumbore diameter of the coupling you have chosen, use acoupling that is one size larger.5. In the low-speed range, the shearing pressure might be toogreat when using a standard key. In this case, calculate thekey shearing pressure to determine if it is necessary to usea special key or spline bore.Electricmotors orsteamturbinesSource of PowerReciprocating Reciprocatingenginesengines4 or moreless thancylinders4 cylinders1.01.52.01.52.02.52.02.53.0Note: Additional service factor for Roller ChainCoupling by operating hours (at 50 r/min and more)8 hours to 16 hours/day - 0.516 hours or more/day - 1.06. Note the lubrication system required and select the couplingcover as necessary. In all applications, use of a couplingcover will provide quieter running, longer life, and saferoperation.Table 2. HP Rating TableCplgNo.Max AllowableTransmissibleTorque at Below50 rpm (in 178688018343418020410271002077710Lubrication 280.520.671.251.432.783.306.251025501000.30 0.78 1.54 2.320.55 1.38 2.76 4.141.05 2.61 5.24 7.861.33 3.33 6.64 9.962.51 6.26 12.51 18.772.88 7.21 14.34 21.555.55 13.81 27.76 41.576.61 16.49 33.05 49.5512.51 31.25 62.49 93.871200300Speed of rotation (rpm)400 500 600 800 1000 1200 1500 1800 2000 2500 3000 3600 4000 48003.53 4.64 5.576.29 8.27 9.9411.96 15.69 18.9115.15 19.98 23.8728.56 37.55 45.0623.72 43.17 51.8563.30 83.28 99.9175.17 99.22 118.54142 188 013.5425.7532.7261.5570.841351623079.40 11.44 12.986.76 20.52 23.2031.92 38.76 44.1240.36 49.08 55.7976.17 92.66 10587.59 106.58 121169 205 233201 244 278380 463 2.2278.8514917133039374319.85 24.00 27.76 32.32 35.32 41.3035.27 42.78 49.62 57.66 62.89 73.6267.05 81.27 94.41 10985.02 103 120161 194185 223355423

Standard RC Couplings Specification TableCplg No.4012401650165018601860208018802010020Std Finished BoresIncl. Std KW &2 SSBore Dia.Min.Max.¹ ₂, ⁵ ₈, ³ ₄⁵ ₈, ³ ₄, ⁷ ₈, ¹⁵ ₁₆1, 1¹ ₈, 1³ ₁₆*, 1¹ ₄*³ ₄, ⁷ ₈, 1, 1¹ ₈, 11¹ ₄, 1³ ₈, 1⁷ ₁₆, 1¹ ₂, 1⁵ ₈*³ ₄, ⁷ ₈, 1, 1¹ ₈, 11¹ ₄, 1³ ₈, 1⁷ ₁₆, 1¹ ₂, 1⁵ ₈,1³ ₄, 1⁷ ₈*, 1¹⁵ ₁₆*1, 1¹ ₈, 1³ ₁₆, 1¹ ₄1.⁷ ₁₆, 1¹ ₂, 1⁵ ₈, 1³ ₄, 1⁷ ₈,1¹⁵ ₁₆, 2, 2¹ ₈, 2³ ₁₆, 2¹ ₄,2³ ₈*, 2⁷ ₁₆*1¹ ₈, 1¹ ₄, 1¹ ₂, 1³ ₄2¹ ₈, 2³ ₈*, 2⁷ ₁₆*, 2⁵ ₈*1¹ ₈, 1³ ₄, 1¹⁵ ₁₆, 22³ ₈, 2⁷ ₁₆, 2⁵ ₈, 2⁷ ₈*,2¹⁵ ₁₆*1¹ ₂, 2³ ₁₆, 2⁷ ₁₆, 22¹⁵ ₁₆, 3¹ ₈, 3³ ₈*, 3⁷ ₁₆*2, 3³ ₈, 3⁷ ₁₆, 3¹⁵ ₁₆ABCLApprox Single Spkt Cplg ChainCplg. Wt.(lbs) Wt.(lbs)OD.ApproxApproxAssembledCplg Inertia(in lb sec 2)¹ ₂¹ ₂⁷ ₈1⁵ ₁₆1¹³ ₃₂1³¹ ₃₂1¹ ₈1¹ ₈⁹ ₃₂⁹ ₃₂2¹⁷ ₃₂2¹⁷ ₃₂2¹³ ₃₂3¹ ₃₂0.510.40.60.20 x 10 -20.60 x 10 -2⁵ ₈1¹¹ ₁₆2¹ ₂1⁷ ₁₆³ ₈3¹ ₄3²⁵ ₃₂2.21.21.89 x 10 -2⁵ ₈22³¹ ₃₂1¹¹ ₁₆³ ₈3³ ₄4³ ₁₆3.51.43.39 x 10 -212⁷ ₁₆3¹ ₂1⁷ ₈⁷ ₁₆4³ ₁₆552.48.09 x 10 -212³ ₄3⁷ ₈2⁷ ₁₆4⁷ ₁₆5¹ ₂6.52.612.4 x 10 -21¹ ₈3¹ ₈4⁹ ₁₆2³ ₈⁹ ₁₆5²¹ ₆₄6⁵ ₈115.531.9 x 10 -21¹ ₈3⁹ ₁₆5³ ₈2⁵ ₈⁹ ₁₆5¹ ₂7⁹ ₃₂16.36.153.8 x 10 -21¹ ₂4⁵ ₈6²³ ₃₂3¹ ₈²³ ₃₂6³¹ ₃₂9¹ ₈31.810.8158 x 10 -2Notes: The dimensions marked with an asterisk indicates set screws at 90 deg. from keyway.CoversCovers allow excellent lubrication, and their use is suggested on all applications to increase both product life and safety.CoverPart No.ForSizesDWWt.Lbs.Cplg. Cover Inertia(in lb. sec 2)40 Cover50 Cover60 Cover80 Cover10020 Cover4012 - 40165016 - 50186018 - 60208018 - 80201002045¹ ₈6³ ₈8³ ₁₆10¹ ₈22³ ₈2¹⁵ ₁₆45¹ ₄.851.452.555.0512.550.69 x 10 -22.00 x 10 -25.40 x 10 -218.9 x 10 -255.8 x 10 -2Aluminum covers are supplied with seals to cover the listed sizes.Covers have a rounded exterior in order to offer protection to screw heads.❹

QD CouplingTAPER-LOCK Coupling QD CouplingsCouplingNumberBushingMax. Torque(in lbs. 5018SH6020SK8018SFJASHSKSF10003500700011,000113 821 825 162231 3237 849 16 8111 413 4 32 87 1637 6415 1611 217 823 8229 3233 843 16521 6431 3243 1651 26 21 3211 413 421 421 4.901.302.505.30Wt.Lbs.***793*Maximum bore indicated is the maximum bore suggested with standard keyway.**K dimension reflects the minimum clearance to remove the coupling half by using the screws as jack screws.***Approximate weight of coupling half with bushing. TAPER-LOCK CouplingsType “TLH”CouplingNumberType “TLF”Max.CouplingTorqueBushingNumber (in 00044,80011081610201230203535Bushing DataMax.BoreMin.BoreABCJ*K**LCouplingO.D.11 815 82331 2 2 21 215 1613 16131 32231 3237 853 8623 32 8111 4231 2 32 87 1637 6423 32 8 1615 1613 1623 411 1613 821 1625 821 3223 8215 16437 647 23 3231 3243 165 1 2719 6491 811793513NOTE:For H type TAPER-LOCK bushing installs from the hub side of the flange.For F type TAPER-LOCK bushing installs from the face side.*Space required to tighten bushing with shortened hex key. Space is also required to loosen screws to permit the removal of the hub by the puller.**Space required to loosen bushing with shortened hex key using screws as jack screws. No puller is required.***Approximate weight of coupling half with bushing.QD is a registered trademark of and is used under license from Emerson Electric Company.TAPER-LOCK is a registered trademark of Reliance Electric Company.LubricationChoose one of the following lubrication systems when using Roller Chain Couplings. The choice depends uponthe operating speed. (Refer to the Horsepower Ratings, Table 2, pg.3.) Use NLGI grade 1 or 2 grease.Lubrication System 1Apply grease regularlyonce per month.Lubrication System 2Apply grease regularly oncea week, or install a couplingcover filled with grease.Lubrication System 3Install a coupling cover filledwith grease. Change thegrease according to Table 4.The amount of grease to apply is shown in Table 3. If these amounts are followed, there will be a slight amountof leakage at the beginning of the operation, but this will soon stop.For System 3, it is especially important to use high-grade grease. Because of centrifugal force, there is a tendencyfor the grease to stick to the inner surface of the cover, resulting in inadequate lubrication.Table 3. Amount of Grease to ApplyCoupling Cover Size40 Cover50 Cover60 Cover80 Cover100 CoverAmount (lb).16.32.711.413.00Table 4. Grease Change Interval for use with Coupling CoverOperating ConditionsMore than 1/2 max. speedLess than 1/2 max. speed❺First change1,000 hours2,000 hoursInterval afterfirst change2,000 hours4,000 hours.901.102.706.1019.00

Installation3. Measure the distance“C” between the sprocketfaces and firmly fastenthe set bolt (refer toSpecifications table, pg.4).1. Place the oil seals for the cover on the sprockethalves.4. Lubricate the chain withgrease, then wrap thechain around bothsprockets and fix withthe connecting pin.2. Bring the sprocket faces close together and correctthe angular and offset misalignment.5. Fill the required quantity of grease into both sidesof case and fasten them firmly. Do not forget touse gaskets.Notes: 1. During high-speed operations or conditionsof large vibration, please use locking cementwhen fastening the bolts.Adjust the angularmisalignment (alphasymbol) so that the widthof the tooth surface T isthe same around thecircumference of thesprockets. The allowableangular misalignment is 1 .Place a straight edge at thebottom of correspondingteeth of the two sprocketsand adjust so that theoffset misalignment isminimized. The allowableoffset misalignment is 2% of the chain pitch.When the sprocket speed is 1/3 or more of themaximum speed (i.e., it lies on the right side of thedark line in the Horsepower Rating table, pg.3), theallowable angular and offset misalignments are 0.5 and 1% of the chain pitch.❻2. Install a cover when there is a risk ofchain breakage.3. Ambient temperature range is 14 to 140 F. Ifyou will use the coupling outside thistemperature range, please consult withU.S. Tsubaki.

U.S. Tsubaki—Roller Chain Coupling Connect quickly and easily Handle high torque Keep your profits turningU.S. Tsubaki, Inc.Headquarters301 E. Marquardt DriveWheeling, IL 60090Tel: (800) 323-7790Tel: (847) 459-9500Fax: (847) 459-9515Web Site: www.ustsubaki.comService CentersAtlanta, GAU.S. Tsubaki, Inc.675 Wesleyan Drive, S.W.Atlanta, GA 30336Tel: (800) 443-8212Tel: (404) 349-7973Fax: (404) 349-7975Charlotte, NCB.C. & H. Company11010 Monroe RoadMatthews, NC 28105Tel: (704) 847-9131Fax: (704) 847-3651Chicago, ILU.S. Tsubaki, Inc.301 E. Marquardt DriveWheeling, IL 60090Tel: (800) 323-7790Tel: (847) 459-9500Fax: (847) 459-9515Manufacturing FacilitiesDallas, TXRobco, Inc.1523 Crescent DriveCarrollton, TX 75006Tel: (972) 242-3300Fax: (972) 245-2328Los Angeles, CAU.S. Tsubaki, Inc.18031 Cortney CourtCity of Industry, CA 91748Tel: (800) 352-4315Tel: (626) 913-1344Fax: (626) 913-5042Philadelphia, PAU.S. Tsubaki, Inc.2321 N. Penn RoadHatfield, PA 19440Tel: (800) 258-3847Tel: (215) 997-9170Fax: (215) 997-9179Bennington, VTSprocket Division222 Bowen RoadBennington, VT 05201Tel: (800) 451-4441Tel: (802) 447-7561Fax: (802) 447-0755Portland, ORU.S. Tsubaki, Inc.14157 N.E. Airport WayPortland, OR 97230Tel: (800) 352-4315Fax: (626) 913-5042Holyoke, MARoller Chain Division821 Main StreetHolyoke, MA 01040Tel: (800) 628-9037Tel: (413) 536-1576Fax: (413) 534-8239Mississauga, ONTsubaki of CanadaLimited.1630 Drew RoadMississauga, ONCanada L5S 1J6Tel: (800) 263-7088Tel: (905) 676-0400Fax: (905) 676-0904Sandusky, OHEngineering ChainDivision1010 Edgewater DriveSandusky, OH 44870Tel: (800) 537-6140Tel: (419) 626-4560Fax: (419) 626-5194Distributed by:NOTE: IN ACCORDANCE WITH THE POLICY OF U.S. TSUBAKI, INC., TO CONSISTENTLYIMPROVE ITS PRODUCTS, THE SPECIFICATIONS IN THIS BROCHURE ARE SUBJECTTO CHANGE WITHOUT NOTICE. FOR CURRENT TERMS AND CONDITIONS OFSALE, SEE OUR CURRENT PRICE LIST. U.S. Tsubaki, Inc. 2000 All Rights Reserved. Printed in the U.S.A. 11/00 L10794

Coupling Cover Size Amount (lb) 40 Cover .16 50 Cover .32 60 Cover .71 80 Cover 1.41 100 Cover 3.00 Table 4. Grease Change Interval for use with Coupling Cover Interval after Operating Conditions First change first change More than 1/2 max. speed 1,000 hours 2,000 hours Less than 1

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