H-TLC Adjustable Torque Limiters. Torq-Tender Mechanical Torque Limiters

Transcription

1 Torq-Tender echanical Torque imiters -TC djustable Torque imiters

2 Torq-Tenders... For ccurate verload Protection n echanical Power Transmission Systems Torq-Tenders are positive drive couplings which provide accurate overload protection in many mechanical power transmission systems. When a jam-up or excess overload occurs, Torq-Tenders disengage motor drives. Their effective, versatile designð proven through 25 years of useðprotect your drive train, motor and entire system. What makes Torq-Tenders so foolproof? Their simple design concept and rugged quality! When load exceeds the rating determined by precision tempered torque springs, the unitõs drive key pivots out of a slot to disengage the coupling. nce the overload is removed and speed reduced, the Torq-Tender resets itself automatically. Steel springs within the unit force metal slides against each side of a hardened cast steel pawl, holding it rigid with one end seated in a detent on the outer drive housing. TT1 Page 6 & 7 TT2 Page 6 & 7 TT2 Page 6 & 7 nstant ctuation Fast, utomatic esetting uring normal machine operation, power transfers into the central assembly through the rigidly held pawl and then rotates the outer drive housing and the driven shaft to which it is connected. f a jam-up or some other malfunction causes an unacceptable load to occur, excessive torque on the pawl overpowers the springs and the pawl rotates out of its detent. Thus, the central assembly is disconnected from the outer drive housing. nce the overload is removed and speed reduced, the torque springs automatically expand to force the pawl back in its detent. This automatic resetting action engages your drive shaft and puts the entire drive system back into motion at its original angular position. r, if you prefer, Torq-Tenders are available with precisely located multiple re-engagement points. TT3 Page 6 & 7 TT3 Page 6 & 7 3 to 60 nch bs. Torque ating 4 to 140 nch bs. Torque ating 18 to 350 nch bs. Torque ating 18 to 500 nch bs. Torque ating 300 to 1500 nch bs. Torque ating 2

3 Count these important Torq-Tender benefits: 1 ependability For Short nd ong Term Savings. ven after repeated overloads, Torq-Tenders continue to operate and protect. nce the overload is removed, Torq-Tenders automatically return to their original setting for continuing overload protection. 2 Flexibility f pplication. You Can nstall ero-ax Torq-Tenders ust bout nywhere. n dusty or oily atmospheres. n high humidity and salt water. They perform dependably for years. Special designs include stainless steel, plated and sealed models for unusual applications and use in most adverse operating conditions. 3 nstallation s Fast nd asy. nstalls as easily as any simple coupling. lso has the advantage of handling up to 1.5 degrees misalignment and from.005" to.015" parallel misalignment. 4 i-irectional nd Uni-irectional esign. Torq-Tenders have the ability to: () elease at the same torque in each direction, () elease at a different torque in each direction, or (C) e a positive drive in either direction. 5 Tamper-esistant esign as eset Capability. nce installed, torque ratings cannot be changed unless springs of a desired new rating are substituted. The change can be made easily and quickly. See page 5 for proper spring selection. Special esigns vailable TT4 Page 6 & 7 SS Self Supporting Page 7 F-Type Face ount Page 7 ctuating Pin/isc Page 8 & 9 -TC Torque imiters Page 10 & to 3000 nch bs. Torque ating vailable n ll odels Up To TT3 vailable n ll odels vailable n ll odels Two odels vailable 3

4 ow To Select The Correct Torq-Tender 1. T TU: Torque is a twisting force that causes rotation and can be theoretically determined with the use of this simple formula: Torque (in. lbs.) = 63,025 x P P For example, if your motor run speed is 100 P and its P rating is 1.5, then: T (in. lbs.) = 63,025 x Your theoretical torque = 945 in. lbs. torque rating just below 945 in. lbs. should be selected. owever, this is only correct if the drive motor is the component which needs the overload protection. f, for example, there is a reducer in the system with a maximum input of 600 in. lbs. and the torque limiter is to be used as a coupling between the 1.5 P motor and the reducer, the setting would then be under the 600 in. lbs. rating. Consideration should also be given to potentially high start up torques in the drive system. ost electric motors have start up torques that exceed normal run torque, which makes it necessary to select a torque as high as possible without exceeding the protection limit. (CUT: ecause of inertia and/or energy in power transfer equipment, torque limiters will not protect against personal injury). 2. SCT T TYP F T-T:. SFT-T-SFT UT - CUP TYP f you require a coupling type model, then the standard Torq-Tender should be used. To order, the size of each bore along with the required torque from the formula above is the only information required. Since Torq- Tenders are bidirectional, the input of the unit is not significant unless the unit is to be equipped with an actuating pin assembly (see page 8). Shaft-To-Shaft Coupling. TU SFT UT - US TYP To order, determine torque requirements from the formula above. lso note shaft diameter and length. To use the basic Torq-Tender with the bushing, you will need a shaft to extend through the complete unit. Your drive or driven component (pulley, sprocket, etc.) will be mounted on the long hub. lso, refer to the specific torque and dimensional information. (ote: external hub keyways and retaining rings are ushed Type Coupling standard). C. F SFT UT - TYP F. (T: Use with timing belt drives, V belt drives, type or sprocket).) f your shaft is not long enough to extend through the entire length of the unit, the face mounted F model is designed to accept your component with minimal shaft length. This model is designed for motor shafts or gear reducer shafts where your sprocket, pulley, etc. is face mounted to the Torq-Tender with four bolts. This model supports itself with minimum overhung load and requires little modification to existing equipment. ffered as an option is the model "". See page 7 for dimensional information.. F SFT UT - UT TYP SS n some applications your incoming drive shaft is not long enough to extend completely through the unit. There are four Torq-Tender models designed Face ount TT2 and TT3 ub ount TT1SS, TT2SS, TT2SS, TT3SS odels specifically for these situations where the unit must be ÒselfsupportingÓ. The shaded portion shown in the drawing above represents the Torq-Tender's one-piece drive shaft which works with a ronze ushing to support the outer housing. 3. SCT S (TT1, TT2, TC.) S SFT T TU U. S FT P 5. 4

5 Torq Tender odels TU S. ST U C U F T US CTUT SPP SSY WT S. TT1 3 to 60 1/4 (.250) 1/4 (.250) Specify Specify 1/2 5/16 () 5/16 () 3/8 () 3/8 () 1/2 (.500) 1/2 (.500) TT2 4 to 140 3/8 () 3/8 () Specify Specify 1-1/4 1/2 (.500) 1/2 (.500) 5/8 () 5/8 () TT2 18 to 350 1/2 (.500) 1/2 (.500) Specify Specify 2-1/4 5/8 () 5/8 () 3/4 () 3/4 () TT3 18 to 500 5/8 () 5/8 () Specify Specify 3-1/4 3/4 () 3/4 () 7/8 () 7/8 () 1 () 1 () 1-1/8 (1) 1-1/8 (1) T 240 to /8 () 5/8 () Specify Specify 5 3/4 () 3/4 () 7/8 () 7/8 () 1 () 1 () 1-1/8 (1) 1-1/8 (1) TT3 300 to /8 () 7/8 () Specify Specify 8 1 () 1 () 1-1/8 (1) 1-1/8 (1) 1-1/4 () 1-1/4 () 1-3/8 (1) 1-3/8 (1) 1-1/2 () 1-1/2 () TT4 750 to () 1 () Specify ctuating Specify /8 (1) 1-1/8 (1) Pin is supplied with 1-1/4 () 1-1/4 () unit. 1-3/8 (1) 1-3/8 (1) Specify 1-1/2 () 1-1/2 () isc option. 1-5/8 (1) 1-5/8 (1) 1-3/4 () 1-3/4 () nch ores With Standard eyways ore Size eyway ver To x x x x x Standard inch keyways are for square keyways. nch bores are supplied with inch size setscrews. ores below.500, are supplied with only setscrews and no keyways. etric ores With Standard eyways ore Size eyway ver To x x x x x x x 3.8 etric bores are supplied with metric size setscrews. For selection help, call - today: Spring Color Code TT-1 TT-2 TT-2 TT-3 TT-3 TT-4 arden reen 18 ray Slicker Yellow 24 Purple Copper 4 40 ight lue old ed rown Silver/luminum ,000 lack ,250 lmond ,500 range ,750 ed. reen ,000 Yellow ,000 2,250 lue ,150 2,500 o Color ,300 2,750 White ,500 3,000 ote: ynamic Torque atings are shown in above chart. Static atings are higher. Call ero-ax for more nformation. rdering Torq-Tenders nclude only if needed ndicate ndicate ndicate ndicate Torque F or SS ronze Pin or ase odel C ore F ore Spring Color odel odel ushing isc 7 8 xample ndicate ndicate ndicate ndicate Torque F or SS ronze Pin or ase odel C ore F ore Spring Color odel odel ushing isc TT old Yes Yes nclude only if needed 7 8 5

6 Torq-Tender Shaft-To-Shaft ount Torq Tender odels odels TT1 TT2 TT2 TT3 TT3 TT4 T (39.7) 3 (92.1) 4 (117.5) C * (29).630 (16) (39.1).820 (20.8) (45.8) (28.2) (53.3) (33.8) (78.2) (36.1) (94.4) (41.6) 3 (84.1) 1 (33.3) F P.135 (3.4).205 (5.2) (45.7).600 (15.2).218 (5.5) 1 (34.9).235 (6).365 (9.3) (33) (61.5) (11.6) (75) 470 (11.9) (46) (88.1).420 (10.7).555 (14.1) 2 (69.8) (115.6).420 (10.7).400 (10.2).590 (15) (89) (137.5) (33.8).500 (12.7).500 (12.7) (77.1) (119.6) C F *ote: aximum bore shown. See page 5 for other bores available. Torq-Tender Through Shaft ountðushed Type * (39.7) 3 (92.1) 4 (117.5) C odels TT1 TT2 TT2 TT3 TT3 TT4 F P.135 (3.4).205 (5.2) (45.7).600 (15.2) 1 (34.9).235 (6).365 (9.3) (33) (61.5) (11.6) (75).470 (11.9) (46) (88.1).420 (10.7).555 (14.1) 2 (69.8) (115.6).400 (10.2).590 (15) (89) (137.5) (33.8).500 (12.7).250 (6.3) (27.4) 1 (28.6) C ronze ushing F *ote: aximum bore shown. See page 5 for other bores available. 6

7 Torq-Tender F-Type Face ount odels * (39.7) 3 (92.1) 4 (117.5) C F P TT1F TT2F TT2F TT3F TT3F TT4F 38.1) 1 (47.6) 2 (66.7) (90.2) 4 (111.1).187 (4.7).282 (7.2).325 (8.2).400 (10.2) P P (50.8) 1/ P 1 2 (60.3) 5/ P 2 (54) 5/ P 2 (66.7) 4.00 (101.6) 3/ P P ax 4 olts 90 o, n iameter C Thread Size *ote: aximum bore shown. See page 5 for other bores available. Torq-Tender SS Self Supporting Torq-Tender -Type odels TT1 TT2 TT2 TT (39.7) C* F P.135 (3.4).205 (5.2) (45.7).600 (15.2) 1 (34.9).235 (6).365 (9.3) (33) (61.5) (11.6) (75).470 (11.9) (46) (88.1).500 (12.7).250 (6.3) *ote: aximum bore shown. See page 5 for other bores available. Tend odels TT2 TT C F* 1 1 (57.15) (34.54) (53.6) (53.49) (83.7) (30.2) 1.03 (26.2).500 (12.7) P *ote: aximum bore shown. See page 5 for other bores available. Torq-Tender Self Supporting C Torq-Tender -Type ronze ushing F 7

8 Torq-Tender ctuating Pin Standard odel* Torq-Tender ctuating Pin ushing odel* odels TT1 TT2 TT2 TT3 TT3 TT (39.7) (92.1) (117.5) S T U W (45.7).837 (21.5).198 (4.19) (34.9) (61.5) (2.92).150 (3.30) (75) (35.4) (2.79).130 (3.30) (88.1) (39.8) (2.29).175 (4.75) (115.6) (45.2).115 (3.05) (3.56) (137.5) (50.9).092 (2.54) W U T S Torq-Tender ctuating Pin odel* Tender odels TT2 TT3 S T U W (53.6) (25.9).115 (2.92).150 (3.30).195 (75.9) (83.7) (2.28).175 (4.75) W S T U Torq-Tender ctuating Pin F odel* *T: The ctuating Pin ssembly is a simple pin which is forced out radially from the main body when overload occurs. When using this option, it is important to note that the housing (F bore) or external mounting hub end of the unit is the power source or input end. This part of the unit must continue to rotate for the extended pin to contact a customer supplied limit switch for shutdown or warning. S T U W odels TT1 TT2 TT (39.7) x.25 P (4.19) (47.6) x.37 P (34.34).115 (2.92).150 (3.30) (50.8) 1/4-20 x.62 P (40.84) (2.79).130 (3.30).243 TT3 2 (66.7) 2 (60.3) 5/16-16 x.50 P (45.69) (2.29).175 (4.75) TT3 3 (92.1) (90.2) 5/16-16 x.62 P (68.58).115 (3.05) (3.56).163 TT4 4 (117.5) 4 (111.1) (101.6) 3/8-16 x.75 P (83.82).140 (3.56).092 (2.54) W S T U Thread Size 8

9 Torq-Tender ctuating isc Standard odel Torq-Tender ctuating isc ushing odel Y odels TT1 TT2 TT2 TT3 TT3 TT (39.7) (45.7).600 (15.2).500 (12.7) (75.8).080 (2) 1 (34.9) (61.5) (88.5).498 (12.6) 1) (75) (100).740 (18.8) (88.1) (113.8) (29.1) 3 (92.1) (115.6) (27.4) (126.5) (50.4) 4 (117.5) (137.5) (33.8) 1 (28.6) (158.7) (63.9) Y Torq-Tender ctuating isc odel Y odels TT2 TT (53.6) (88.5).921 (23.4).121 (3.1) (75.9) (83.7) (30.2) (113.8).870 (22.1) Y Torq-Tender ctuating isc F odel Y odel TT1 TT2 TT (38.9) ( x.25 P (75.7) (51.6) 1 (47.6) x.37 P (88.5).480 (12.2) (62.2) (50.8) 1/4-20 x.62 P (99.9).790 (20.1) TT (73.5) 2 (66.7) 2 (60.3) 5/16-18 x.50 P (113.8) (27.5) TT (90.2) (90.2) 5/16-18 x.62 P (126.5) (48.7) (3.2) TT (114.9) 4 (111.1) (101.6) 3/8-16 x.75 P (158.7) (3.2) Thread Size Y 9

10 -TC Torque imiters The ntelligent lternative To Friction-Type Torque imiters 1 The unique features in the ero-ax -TC give the designer wider parameters in solving motion control problems. 1 -TC s urable. n many applications, a torque limiter may wait for months or years before it is required to disengage. ll this time, the unit may be subjected to moisture and rust; acids or salts and corrosion; or any number of other pollutants which could seize up the unit and prevent disengagement. owever, the -TC will never rust because its major components are designed from special polymer materials which are resistant to water, salts, mild acids and most other pollutants. ven in temperatures from -40 F to +180 F, the unit still withstands many corrosive elements and abuse. 2 -TC s ependable. t works on a springloaded convex pin and detent design which reacts to overloads...but not to lubricants. Unlike friction-type designs, you can submerge an -TC in oil and still depend on precise disengagement at your design limits. 3 -TC s epeatable. When a friction-type torque limiter disengages, it generates heat which often alters its disengagement characteristics. t also wears the faces which require the unit be readjusted to counteract a constantly lowered release torque. owever, the -TCÕs resilient *ylatron S and **elrin materials donõt build up, or retain, the kind of heat unique to friction designs. 4 The Torque Setting s djustable. f operating conditions require periodic changes in torque settings, the -TC gives you that ability. Simply adjust the unitõs external compression bolts until the desired new setting is reached. 5 The -TC Will Trigger utomatic larm nd Shut-own Systems. ne of the -TCÕs most important special features is its ingeniously simple and inexpensive actuating disc (see page 11). Use this option when your application includes either high-speed overrunning or excessive overrunning in unattended situations. Used in conjunction with a properly installed external limit switch, the actuating disc triggers an automatic warning or power shutdown the instant the -TC reaches an overload condition. ote: *ylatron S is a registered trademark of Polymer Corp. **elrin is a registered trademark of upont Company rdering -TC Torque imiters odel 1000 Shown With ptional Set Screws. odel 500 Shown With Torque djusting olts nclude only if needed ctuating ronze Set ase odel C ore F ore Spring Color isc ushing Screws nclude only if needed xample ctuating ronze Set ase odel C ore F ore Spring Color isc ushing Screws -TC lue

11 -TC Standard ores and eyways Torque ange (n. bs.) -TC odel 500 ore C Shaft eyway one one 1/8-1/8 ore F ousing eyway one one 1/8 3/16 1/8 3/16 3/ /16 3/16 3/16 3/16 1/4 1/ /4 odels lue ed old TC imensions odels (50.8) 1.49 (37.8) (21.7) 1.49 (37.8).250 (6.3).563 (14.3) (28.6) 1/4-20 x1/2 P 2.53 (64.3) (57.8) 2 (54) (81.3) 2.37 (60.2) (56.6) (30.7) 2.22 (56.4).285 (7.2) (39.4).520 (13.2) (58.4) 3.45 (87.6).400 (10.2) (42.8) 5/16-18 x 3/4 P 4.40 (111.8) (82.4) (79) eyway Torque dj. olts Standard -TC C -TC With ronze ushing eyway C Torque dj. olts T 1 1 -TC With ctuating isc isengaged ngaged eyway F ushing F Thread Size 11

12 dditional ero-ax otion Control Products C Couplings ew patented open arm coupling design uses composite material in disc packs. ServoClass Couplings ero backlash, torsionally stiff, high misalignment servomotor couplings. 6 sizes, from 8 to 212 inch pound of torque. Schmidt Couplings n-line, ffset and lastomeric couplings suitable for shaft to shaft applications. Posi-ok Shaft ushings nch and etric sizes to 35 mm. ickel plating offers corrosion protection. TP Shaft ushings ydraulic principle for precise and fast installation. 26 sizes from 3/4" to 4". -TC Torque imiters Corrosion resistant. ores from.250" to ". Torques from 4 to 500 in. lbs. Crown ight ngle ear rives Two and three way models with 1:1 and 2:1 ratios. Precise spiral bevel gears. ero-ax djustable Speed rives nfinitely variable 0 to 400 P outputs from constant input speeds to 2000 P. oh'lix inear ctuators Convert rotary motion into linear motion. Five models with 3/8" to 2" dia. shafts. WTY ero-ax, nc. the manufacturer, warrants that for a period of 12 months from date of shipment it will repair, or at its option, replace any new apparatus which proves defective in material or workmanship, or which does not conform to applicable drawings and specifications approved by the manufacturer. ll repairs and replacements shall be F... factory. ll claims must be made in writing to the manufacturer. n no event and under no circumstances shall manufacturer be liable for (a) damages in shipment; (b) failures or damages due to misuse, abuse, improper installation or abnormal conditions of temperature, dirt, water or corrosives; (c) failures due to operation, intentional or otherwise, above rated capacities, and (d) non-authorized expenses for removal, inspection, transportation, repair or rework. or shall manufacturer ever be liable for consequential and incidental damages, or in any amount greater than the purchase price of the apparatus. ero ax, nc. reserves the right to discontinue models or to change specifications at any time without notice. o discontinuance or change shall create any liability on the part of ero-ax, nc. in respect to its products in the hands of customers or products on order not incorporating such changes even though delivered after any such change. This warranty is in U F T WTS, PSS P, CU (UT T T T) Y P WTS F CTTY FTSS F P- TCU PUPS. T TS F TS WTY CSTTUT UY S US S S CUSV Y, U F Y T T CV F C, C F WTY, STCT TT TY UP Y T TY. ny legal proceedings arising out of the sale or use of this apparatus must be commenced within 18 months of the date of purchase. CUT: otating equipment must be guarded. lso refer to S specifications and recommendations. ero-ax, C, Torq-Tender, Control-Flex Posi-ok and oh'ix are registered trademarks of ero-ax, nc. ero-ax 1999 TT5998 Printed in U.S.. FU C,S.. C/Trafalgar 4, C Tel: ,Fax: , fuiberica@fuiberica.com