KT Torque Limiters Overload Protection Systems UFLEX - Friction Disk - Zero Backlash Ball Detent KT SI - Ball/oller Bearing Style KT SI Compact - Zero Backlash Ball Detent Catalog Contents (Metric) Page Summary of Overload Protection 6 Designs and Applications 7-8 Selection Guidelines 9 UFLEX Friction Disk Torque Limiter Product Features and Components 40-4 UFLEX Standard Design 4 UFLEX Sprocket Design 4 UFLEX max. (wide component) 44 UFLEX with OTEX Coupling 45 UFLEX with BoWex Coupling 46 Zero-Backlash Torque Limiter Product Features and Components 47-48 Standard Design 49 Sprocket Design (chain ) 50 Pulley Design (belt ) 5 UFLEX with OTEX GS Coupling 5 Assembly Guidelines and Limit Switch 5 UFLEX KT-SI KT-SI Ball/oller Bearing Torque Limiter Product Features and Components 54-55 KT-SI Standard Designs (FT, KT, LT) 56 KT-SI with OTEX Coupling 57 KT-SI Compact Zero-Backlash Torque Limiter Product Features and Components 58 KT-SI Compact Standard Designs 59 5
Torque Limiters Summary of Overload Protection Overload protection for direct and indirect s UFLEX - Friction Disk Torque limiter with OTEX Direct s OTEX GS / Driven Component - Zero-Backlash Torque Limiter with OTEX GS Electric motor KT SI - High Capacity Torque Limiter with OTEX Indirect s UFLEX - torque limiter with sprocket Electric motor UFLEX on Pulley - Torque Limiter with sprocket Driven Component - Torque Limiter with pulley 6
Torque Limiters Designs and Applications Design Characteristics Applications Torque Limiter, high-capacity, high-quality Overload protection up to 6800 Nm High-capacity wear for long service life Zinc, yellow chromated coating Economical See page 4 Conveyors Packaging machines Textile machines Gear motors UFLEX standard Torque limiter with sprocket Design ready for assembly Torque pre-set to customer specifications Available from stock with standard sprockets Other sprockets available on request See page 4 Conveyors Automation systems Actuators UFLEX with sprocket Torque limiter in a lengthened design for assemblies with wide driving elements (i.e. double or triple sprockets) Detailed adjustment to customer s mounting dimensions Also available with a sprocket See page 44 Multiple sprocket s Multiple groove V-belt pulleys Conveyors Packaging machines UFLEX max. Torque limiter for shaft-to-shaft connection Torsionally flexible torque limiter able to compensate for misalignment Axial plug-in Various elastomers available, each adjusted to the application See page 45 Gear motors Axle s High-quality pumps Printing machines UFLEX KT-SI UFLEX with OTEX Torque limiter, torsionally rigid, double-cardanic shaft-to-shaft design Low cost Axial plug-in Double-cardanic design compensates for high misalignment See page 46 General equipment Low speeds High misalignment Conveyors UFLEX with BoWex 7
Torque Limiters Designs and Applications Design Characteristics Applications Torque Limiter up to 400 Nm Zero Backlash, torsionally rigid, ball-detent design Standard or synchronous Includes flange for mounting of customer s components See page 49 Packaging machines Machine tools X-Y-Z axle s Linear s standard Torque Limiter with integrated sprocket Torque pre-set to customer specifications educes component costs Standard sprockets available from stock Also available with belt pulley See pages 50 and 5 Conveyors for packaging machines Textile machines With belt pulley for linear s with sprocket or pulley with OTEX GS Torque Limiter as a shaft-to-shaft coupling Combination with backlash-free OTEX GS Torsionally flexible, able to compensate for misalignment Axial plug-in Various elastomers available See page 5 Axle s on machine tools Gear motors Woodworking machinery Linear s High Capacity Torque Limiter up to 000 Nm Available as a ratchet, synchronous and failsafe design New: Free-spinning design (no residual torque) See page 56 For rugged s, e. g. crushers In combination with coupling or belt pulleys, sprockets, etc. KT SI standard KT SI with OTEX High Capacity Torque Limiter as a shaft-toshaft coupling Torsionally flexible, able to compensate for misalignment Axial plug-in Various elastomers available See page 57 Combinations for motor and gearbox, e.g. bottle filling machines or extruders (free-spinning design) KT SI Compact New Zero-Backlash ball-detent torque limiter Torsionally stiff, able to compensate for misalignment Combines with otex GS or adex-nc for a high precision shaft to shaft connection Frictionally engaged keyless hubs Maintenance free See pages 58-59 Axle s on machine tools Gear motors Woodworking machinery Linear s High precision / high torque applications 8
Torque Limiters Selection Guidelines Important factors to consider when selecting a torque limiter: Proper operation is possible only if the overload torque setting exceeds the maximum normal operating torque of the machine as shown in the chart below. The torque limiter setting should be set 0% higher than the maximum operating torque of the. (see chart below) Accelerating and start-up torques should be considered when calculating maximum operating torque of the. KT manufactures several types of torque limiting components. Each design has a different amount of residual torque once it disengages. To determine the proper design, please consider the following guidelines: Is there a limit switch or proximity switch being used to shut down the? How frequently would the torque limiting device be disengaged? What amount of residual torque can the accept? If possible, the torque limiter should be placed between the electric motor and n component. This ensures that torque transmission is stopped as soon as an overload occurs. T [Nm] Torque X UFLEX KT-SI Time T [s] Torque curve of the machine Maximum operating torque of the machine Torque limiter setting X Safety margin between and (should be at least 0 % of the maximum operating torque of the machine). 9
UFLEX Friction Torque Limiter Product Features and Components UFLEX Standard UFLEX with sprocket UFLEX with OTEX Overload protection up to 6800 Nm (standard) Easy to assemble with locking positions Available with sprocket included Economical, high-capacity friction disk design Asbestos-free and rustresistant friction lining for dry running (approved for explosion-proof applications) High-quality materials for durability and long life High-quality slide bush with dry-film lubricant High grade steel components Corrosion protection with zinc-yellow-dichromate coating ust-resistant and acidproof design available on request Torque can be adjusted while assembled High-quality disk springs and friction linings The combination of proven UFLEX protection for every application. and customer-specific elements (i. e. sprockets) provides overload Layers of disk springs and high-quality friction linings ensure a high capacity - even in small mounting spaces. 40
UFLEX Friction Torque Limiter Product Features and Components UFLEX consists of the following components: 8 5 9 4 Disk spring arrangements: 6 0 6 7 List of parts: Hub Pressure ring Setting nut 4 Torque setting bolts 5 Disk spring 6 Friction lining 7 Slide bushing 8 Setscrew 9 Locking washer 0 Drive component (i. e. sprocket) TF Small load on friction linings For small to average torques High service life of friction linings TFD Small load on the friction linings Torques as with design TF Insignificant decrease of torque even during extended period of disengagement Precision torque adjustment due to double spring arrangement UFLEX KT-SI TF Average load on friction linings Average wear and decrease of torque with longer slipping periods Double torque due to double layer of the disk springs TF High load on friction linings High wear and decreased torque with longer slipping periods Not available in all sizes 4
UFLEX Friction Torque Limiter Standard Design Torque limiter for a torque range up to 6800 Nm Standard UFLEX zinc-coated and yellow chromated Torque adjustable after assembly Asbestos-free and rust-resistant friction linings Finished bores to tolerance H7, keyway to DIN 6885/ All components are made of high-quality steel Easy locking system ( different positions on locking washer) 00 0-5 6-8 Torques [Nm] ) Max. UFLEX Bore Driving component b screw Set- speed d [PM] TF TF TF ) D size D N d 4) B Pilot bore max. min. max. S L g M 00 0000 0,5 5 0 0 0 8.5 6.5 M 4 0 8500 0 4 0 0 ) 45 45 5 8.5 6.5 M 4 0 6600 5 5 0 70 58 40 40 6 8 45 4 M 5 5600 0 75 40 50 0 00 5 68 45 44 7 0 5 5 M 5 400 5 40 50 80 50 400 5 88 58 58 9 4 57 5 M 6 00 50 00 00 600 550 800 45 5 75 7 5 5 4 68 5 M 6 4 700 90 600 80 00 00 600 55 40 90 85 6 8 4 78 5 M 8 5 00 400 800 800 600 400 00 65 70 0 98 9 8 0 5 9 8 M 8 6 900 00 00 600 400 8 80 00 0 6 8 5 0 8 M 8 7 600 600 00 00 4400 45 00 40 50 44 8 5 5 8 M0 8 00 900 400 800 6800 58 0 85 80 70 5 8 5 5 5 8 M0 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) ) Not available in all sizes. ) Bore sizes larger than Ø 9 mm will have reduced size keyway. Please consult KT Corporation. 4) Dimension d is machined to accept a component with bore ISO - F8 tolerance. For additional information, contact KT. Cross clamping nut for limited axial space applications Keyless clamping ring hub (design 4.5) friction connection 4
UFLEX Friction Torque Limiter UFLEX with sprocket UFLEX torque limiter with sprocket Other sprockets on request Stainless steel available on request Available from stock with standard sprocket (see table below) Available ready to be installed with the torque pre-set Call KT for Availability UFLEX Max. speed Torques [Nm] ) Bore d Setscrew [PM] Pilot TF TF TF Max. D D N B s L g M bore 0 6600 5 5 0 70 58 40 6 45 4 M5 5600 400 00 0 75 5 40 50 00 40 50 50 80 00 600 0 00 50 400 550 800 5 5 45 68 88 5 45 58 75 7 9 4 5 57 68 6 6 6 M5 M6 M6 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) Standard sprocket /8 x 7 /, z = / x 5 / 6, z = / x 5 / 6, z = 7 /4 x 7 / 6, z = UFLEX KT-SI Available on request with needle bearing instead of slide bushing. Available with needle bearing for high radial load, high torque or long slipping periods 4
UFLEX Friction Torque Limiter UFLEX max. Design UFLEX for assemblies with wide driving components such as double or triple sprockets Can be adjusted to customer s dimensions Also available as a complete unit with sprocket Other sizes of UFLEX max. on request (please mention the width of driving component "b") Call KT for Availability UFLEX Max. Torques [Nm] ) speed Bore d [PM] D TF TF TF D N B b max d ) L max Pilot bore max. 0 6600 5-5 0-70 58 40 6 40 70 5600 0 75 40 50 0 00 5 68 45 7 4 44 85 400 5 40 50 80 50 400 5 88 58 9 54 58 00 00 50 00 00 600 550 800 45 5 75 6 7 5 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) ) Dimension d is machined to accept a component with bore ISO - F8 tolerance. For additional information, contact KT. UFLEX max. with mounted sprocket and pre-set torque 44
UFLEX Friction Torque Limiter UFLEX with OTEX coupling UFLEX with OTEX for shaft-to-shaft connections Torsionally flexible torque limiter Axial plug-in Torque adjustable after assembly Able to compensate for misalignment Various elastomer hardnesses available Easy assembly UFLEX OTEX UFLEX torques [Nm] ) OTEX torques [Nm] ) TF TF TF 95/98 Shore A T KN T Kmax 00 0 0 4 5 6 7 8 4 9 4 8 8 48 75 90 00 0 40 0.5 0 5 5 0 75 5 40 50 00 90 600 400 800 00 00 600 00 900 400 5 4 0 0 70 40 50 50 80 00 600 80 00 800 600 600 400 00 4400 800 6800 0 00 50 400 550 800 00 600 400 00.5 7 60 60 5 55 465 600 4950 6000 000 5 4 0 0 650 050 90 700 9900 000 000 Bore d Bore d Pilot bore max. max. 0 6 0 5 5 5 40 5 48 45 6 55 98 65 0 8 80 5 45 00 5 58 0 60 L D A L E l l D H 59 44 5 0 78 6 6 5 7 40 98 80 45 8 0 50 55 98 5 0 5 58 65 0 57 4 45 64 80 66 6 68 8 56 8 05 05 85 78 40 85 80 60 59 60 9 45 00 4 00 90 85 0 50 0 0 5 7 0 55 0 4 55 7 40 5 65 55 5 0 UFLEX KT-SI ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) UFLEX as intermediate shaft coupling for extended shaft gaps Available in combination with OTEX or ADEX -N couplings 45
UFLEX Friction Torque Limiter UFLEX with BoWex coupling UFLEX with BoWex for shaft-to-shaft connections Torsionally rigid torque limiter Axial plug-in For simple s (low speeds, etc.) Easy assembly Double-cardanic, able to compensate for misalignment Call KT for Availability UFLEX BoWex UFLEX BoWex torques [Nm] torques ) 00 0 0 9 8 8 48 65 Bore d [Nm] Bore d Pilot TF TF TF ) T KN T K max max. max. bore D A L E l 0.5 5 6 0 9 48.5 5 0 4 0 45 90 0 ) 8 66.5 40 5 5 70 80 60 8 8 45 5.5 0 75 40 50 0 00 40 80 5 48 95 5 45.5 5 40 50 80 50 400 80 760 5 65 57 64 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) ) Not available in all sizes. ) Bore sizes larger than Ø 9 mm will have reduced size keyway. Please consult KT Corporation. UFLEX with backlash-free ADEX -N steel disc coupling Suitable for high operating temperatures (up to 56 F) Custom adaptors are available for a wide range of shaft gaps 46
Zero-Backlash Torque Limiter Product Features and Components - Torque Limiter with mounting flange - Torque Limiter with sprocket - Torque Limiter with OTEX GS Zero-Backlash, torsionally stiff overload protection, suitable for reversing s Low-cost protection even for general applications Disconnection of the in case of overload eduction of torque peaks Highly repeatable release point even after extended operation Easy assembly and torque setting Maintenance-free Insensitive to oil and grease Easy integration of customer components High-quality materials for durability and long life Compact size, low mass moment of inertia Flexible modular design Special disk springs for special applications Zero-Backlash shaft-hub connections Standard or synchronous re-engagement Self contained and compatible with torque and limit switches UFLEX KT-SI Torque Flow zero-backlash overload system. Torque is transmitted though the perforated disk spring (patented design). 47
Zero-Backlash Torque Limiter Product Features and Components Standard design DK Synchronous design SK If the torque set is exceeded, there is a relative movement between the driving and n side. The transmittable torque is decreased to a minimum. The balls leave the indentations of the disk springs. After eliminating the overload, the balls engage automatically with the next following ball indentation of the disk springs. If the torque set is exceeded, there is a relative movement between the driving and n side. The transmittable torque is decreased to a minimum. The balls leave the indentations of the disk springs. After eliminating the overload, the balls re-engage automatically with the disk springs after a rotation of 60. Driving and n side are re-engaged in the same orientation to each other (other degrees of re-engagement, for example 80, are also possible). Compatible with limit switch or sensor in case of overload Sensor 7 7 Shift ring (part 7) moves axially Mechanical limit switch Normal operation: No signal by sensor or mechanical limit switch In case of overload: The axial movement of the shift ring activates the sensor or mechanical limit switch. The resulting signal may be used for control operation (e. g. motor stop). 48
Zero-Backlash Torque Limiter Standard Flange Design SYNTEX standard torque limiter applicable up to 400 Nm Flange design Easy mounting of customers components Standard or synchronous designs available Torque adjustable after assembly Also available with a keyless frictional shaft-hub-connection Finish bores according to tolerance H7, keyway to DIN 6885/ (hub design 4.5) Hub design.0 H=stroke Hub design 4.5 z=number Torques [Nm] ) 0 Standard design DK Synchr. design SK Bore d DK DK SK SK Pilot bore max. 6 0 5 0 0 5 0 65 0 D A D d D N D D d l L l l l l 4 l 5 z H = Stroke 80 7 65 48 47 6 4.5 45 8 6 6 5 8 UFLEX KT-SI 5 0 60 45 90 5 65 40 00 5 98 89 8 60 60 78 5.5 50 8 7 8 9 8 5 5 80 75 50 0 00 70 80 5 0 0 0 75 70 90 5.5 60 0 0 4 50 60-80 75 00 80 80 60 400 50 6 5 4 05 98 0 6.6 70 5 56 Hub design 4.5 d max. l 6 l 7 l 8 L G s Clamping screws Tightening torques TA [Nm] ) 0 5 5 50 0 9.5 4 54 4 x M 5 8.5 5 4 8 6 4 4 x M 6 4 5 0 4 70 4 4 x M 6 4 50 4 7 8 6 4 x M 6 4 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) 49
Zero-Backlash Torque Limiter with Sprocket Standard SYNTEX with integrated sprocket Available ready to be installed with the torque pre-set eduction of components by integration of parts Standard or synchronous designs available Torque adjustable after assembly Finish bores according to tolerance H7, keyway to DIN 6885/ Also available with a keyless frictional shaft-hub-connection (hub design 4.5) Call KT for Availability Hub design.0 H=stroke Hub design 4.5 Torques [Nm] ) Standard design DK Synchr. design SK Bore d DK DK SK SK Pilot bore max. Standard sprocket D N D D L l l l 5 H = Stroke 0 6 0 5 0 0 5 0 65 0 8 x 7, z = 5 48 47 6 45 8 6 5 5 0 60 45 90 5 65 40 00 5 x 5 6, z = 4 60 60 78 50 8 7 9 5 5 80 75 50 0 00 70 80 5 x 5 6, z = 9 75 70 90 60 0 4 50 60-80 75 00 80 80 60 400 50 4 x 7 6, z = 7 05 98 0 70 5 56 Hub Design 4.5 d l 6 l 7 l 8 L G s Clamping screws Tightening torque TA [Nm] ) 0 5 5 50 0 9.5 4 54 4 x M 5 8.5 5 4 8 6 4 4 x M 6 4 5 0 4 70 4 4 x M 6 4 50 4 7 8 6 4 x M 6 4 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) 50
Zero-Backlash Torque Limiter with Pulley Standard SYNTEX with integrated belt Standard or synchronous designs available Torque adjustable after assembly Available ready to be installed with the torque pre-set eduction of components by integration of parts Finish bores according to tolerance H7, keyway to DIN 6885/ Also available with a keyless frictional shaft-hub-connection (hub design 4.5) Call KT for Availability Hub design.0 Hub design 4.5 H=stroke Torques [Nm] ) 0 5 Standard design DK Synchr. design SK DK DK SK SK 6 0 5 0 0 5 0 65 0 60 45 90 5 65 40 00 Pilot bore Bored max. 0 5 Belt T0 ) T0, z=4 T0, z=0 Belt AT0 ) AT0, z=4 AT0, z=0 D N D D L l l l 5 H = Stroke 48 47 6 45 8 6 5 60 60 78 50 8 7 9 UFLEX KT-SI 5 5 80 75 50 0 00 70 80 5 T0, z=6 AT0, z=6 75 70 90 60 0 4 50 60-80 75 00 80 80 60 400 50 T0, z=48 AT0, z=48 05 98 0 70 5 56 Hub design 4.5 d l 6 l 7 l 8 L G s Clamping screws Tightening torque T A [Nm] ) 0 5 5 50 0 9,5 4 54 4 x M 5 8,5 5 4 8 6 4 4 x M 6 4 5 0 4 70 4 4 x M 6 4 50 4 7 8 6 4 x M 6 4 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) ) Number of teeth on belt pulley 5
Zero-Backlash Torque Limiter with OTEX GS Coupling Backlash-free, axially rigid torque limiter coupling Axial plug-in Standard or synchronous designs available Torque adjustable after assembly Aluminium components provide low mass moment of interia Also available with a keyless frictional shaft-hub-connection (hub design 4.5) Hub design.0 Hub design 4.5 with 6.0 style hub H=stroke Call KT for keyless connections Hub design 4.5 OTEX GS Torques [Nm] ) Standard Synchronous design DK design SK DK DK SK SK T KN OTEX GS 98 ShA-GS T Kmax max. Bore d d D A D H l E l l 5 L L G D H = Stroke 0 4 6 0 5 0 0 5 0 65 60 0 0 8 80 55 0 8 70 0 45 00 6 5 8 0 60 45 90 5 65 40 00 60 0 5 8 98 65 5 0 78 50 78 5 8 5 80 75 50 0 00 70 80 5 650 5 45 0 70 45 4 9 60 6 90 50 48 60-80 75 00 50 80 60 400 55 050 50 6 6 05 56 8 4 70 67 0 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: Nm x 8.85 = 6.55 lb in) 5
Zero-Backlash Torque Limiter Assembly / Limiter Switch / Proximity Switch Mounting instructions available on request. The overload system is pre-set at our factory. Unless specific instructions are given by the customer, the torque is set to about 70 % of the maximum torque. The operating principle of the overload system enables backlash-free torque transmission by positive locking. The torque is transmitted by balls and disk springs. By the prestressed force of the disk spring, the balls engage in the respective ball position of the disk spring. The disengaging torque can be set using the lable attached to the outer diameter of the unit as follows; Lock the hub against twisting. Unscrew the socket head bolt in the setting nut. Note the reference position (colored marking on the hub). Turn the setting nut clockwise with a spanner wrench to increase the disengaging torque; turn the setting nut counterclockwise in order to reduce the disengaging torque. When the desired disengaging torque is reached, lock the setting nut again by tightening down the socket head bolt in the setting nut. Limit switch / Proximity Switch Operation A mechanical limit switch or a proximity switch is actuated by the axial movement of the shift ring arising in case of overload. In this way, a control signal is produced disconnecting the. Assembly The sensor has to be mounted in a solid device in order to ensure a smooth operation. The sensor should be protected against dirt and potential mechanical troubles. ecommneded Adjustment On engagement of the overload coupling, the shift ring realizes an axial stroke movement of about mm. The sensor or the limit switch must be assembled in this shifting range. In order to adapt the mechanical limit switch and the shifting way to the unit, the limit switch has to be adjusted accordingly. For that purpose the shifting way can be changed at the tappet after opening the cover plate. Please be sure to check the operation of the limit switch before delivery of the unit. Please observe the operating instructions for the sensor or limit switch. (KT Corp. does not furnish prox./limit switches) Shifting On Off UFLEX KT-SI Degrees 0 8 6 0 Break contact 4 Make contact Technical data: Maximum voltage: 500 V AC Maximum constant current: 0 A Kind of protection: IP 65 acc. to DIN 40050 Switching frequency: 6.000/h Operating temperature: 0 C to +80 C Kind of contact: break contact, make contact Mechanical service life: 07 switches Housing: Aluminium diecast Cover: Aluminium sheet steel Switching direction: Possible from all directions After opening the cover plate a change of the shifting way is possible! 5
KT-SI Torque Limiter Product Features and Components High Capacity Overload protection up to 000 Nm Various designs available to fit your application Available with same dimensions as a ratchet, synchronous and fail-safe design educes torque peaks Highly repeatable release point even after extended operation Easy assembly and torque setting Self contained and compatible with prox. and limit switches Insensitive to oil and grease Disconnection of the in case of overload High-quality materials for durability and long life Maintenance-free Backlash-free shaft-hub-connections Upon overload, balls and/or rollers disengage discontinuing the torque between driving and n side. The shift ring moves axially activating a limit switch or proximity switch. The output signal shuts down the. No signal in case of normal operation Signal in case of overload Engaged Limit switch Disengaged Limit switch 54
KT-SI Torque Limiter Product Features and Components List of parts: Hub Flange ring Shift ring 4 Setting nut 5 Disk spring 6 Ball retainer 7 Slide bush 8 Axial needle bearing 9 Setscrew 5 4 0 6 8 9 7 Three operating principles with the same mounting space Standard design DK Synchronous design S Fail-safe design SG UFLEX KT-SI Any engagement after an overload. After eliminating the overload, the balls automatically engage in the next indentation. Synchronous engagement after an overload. After eliminating the overload the rollers automatically engage after a rotation of 60. Driving and n side are re-engaged in the same orientation to each other. Other degrees of engagement, i. e. 80, are also possible. The fail-safe design is a pure torque measurement without any ratchet function. In this case an overload will trigger an audible or visual signal by a sensor (i.e. limit switch - not included) and the mechanical components will continue to. 55
KT-SI Torque Limiter Design FT, KT and LT Standard KT-SI torque limiter handles torques up to 000 Nm Available ready to be installed with the torque pre-set For direct mounting of customers components Standard (Ball Detent), Synchronous (oller Bearing) and Fail- Safe designs available Torque adjustable after assembly Finish bores according to tolerance H7, keyway to DIN 6885/ and AGMA 900-A86 CL- fit Phosphate coated Call KT for Availability H=stroke H=stroke H=stroke z=number z=number Design FT Design KT Design LT KT-SI Torques [Nm] ) Disk spring layers design DK (Standard) Disk spring layers design S and SG (Synchronous) T T T T4 T T T 0.5 5 5 0 0 40 5 0 0 40 6 5 5 55 55 00 5 5 50 50 00 5 5 50 50 0 0 00 5 50 50 00 00 00 5 50 50 00 00 50 00 450 50 00 00 00 00 450 4 50 00 00 00 00 500 500 000 00 00 00 400 400 800 5 5-50 0-600 00 000 600 000 70 450 50 900 600 800 6 500 000 50 00 7 50 7500 600 9500 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: 5Nm x 8.85 = 44.5 lb in) Weight with max. bore kg 0.4.0.7.88 8.4.5 0.60 4.0 KT-SI 0 4 5 6 7 Bore d Pilot bore max. 7 0 0 5 4 5 8 45 4 55 8 65 40 90 40 0 d D D A d d l l l l 4 l 5 l 7 l 8 L L L z 4 48 55 8 8 4 6.5 7.5 9 7.5 8 8.5 5.5 66 6xM5 60 70 8 50 8 4 8 6.5 9 0 5 70 85 6xM5 78 89 00 60 5 5 0 6 9 9 6 78 00 6xM6 90.5 05 0 80 65 5 8.5 0 0 47 78 96 5 6xM8 05 5 46 00 78 6.5 5 7 9 5.5 6 00 4.5 5.5 6xM0 0.5 55 94 0 90 6.5 7 9 57.5 8.5 40 7 6xM 6 00 40 6 0 8 9 5 7 64 0 4 7 05 6xM6 98 0 80 90 60 8 6 4 07 8 0 00 48 8 6xM0 H = Stroke DK S.4...8.4.0.7..7.5 4.7.0.5 4.0 56
KT-SI Torque Limiter KT-SI with OTEX coupling KT-SI torque limiter for shaft-to-shaft connections Axial plug-in Compensates for misalignment Standard (Ball Detent), Synchronous (oller Bearing) and Fail- Safe designs available Torque adjustable after assembly Easily tuned to you system by changing spider hardness Call KT for Availability H=stroke KT-SI OTEX 0 9 4 8 8 4 48 5 55 6 7 Design DK (Standard) Torques [Nm] ) KT-SI disk spring layer T T T T4.5 5 5 0 0 40 6 5 5 55 55 00 5 5 50 50 0 0 00 5 50 50 00 00 50 00 450 50 00 00 00 00 500 500 000 5 50 0 600 00 000 600 000 Design S (Synchronous) Torques [Nm] ) KT-SI OTEX KT-SI disk spring layer 0 8 8 48 55 4 75 5 90 6 90 7 40 ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: 5Nm x 8.85 = 44.5 lb in) T T T 5 0 0 40 5 5 50 50 00 5 50 50 00 00 00 50 00 00 00 00 450 00 00 00 400 400 800 0 450 50 800 600 800 500 000 50 800 50 7500 600 9500 UFLEX KT-SI KT-SI OTEX 9 0 8 4 8 8 48 8 55 48 4 75 55 5 90 6 90 7 40 Max. bore [mm] d max. d 4 0 8 8 5 45 8 5 60 45 45 70 60 55 90 70 65 00 90 00 0 60 H = Stroke [mm] Design D A D H d H E l l L DK S 55 40 8 6 5 65 0 0 5 8.5 8.5.4. 8 55 7 8 0 4 80 8 4 45.5 5..8 00 65 0 0 5 8 05 5 8 56 8 6.4.0 0 80 8 4 45 0 60 0 65 4 78.7. 46 05 5 8 56 8 60 80 40 85 56.5 00.7.5 76 0 60 0 65 44 00 00 45 00 64.5 4.5 4.7.0 40 00 00 45 00 9.5 4.5 80 0 65 65 55 0 00 4.0 57
KT-SI Compact Product Features and Components Zero-Backlash with curved spring design Ball-Bearing connection flange Zero-Backlash keyless shaft connection Many sizes available from stock Maintenance Free Precision breakaway with highly repeatable accuracy Hardened contact surfaces for long-life and durability Design of spring Zero-Backlash comparison F Movement till setting range The KT SI Compact operates in the degressive area of the disk spring so the torque release is immediate upon overload. Sense of rotation right KT SI Standard KT SI Compact s Operating ange Sense of rotation left Torsion angle Torsion angle = 0 Zero-Backlash! Zero-Backlash ball detent design Ball-bearing flange ring for precise speed and run-out Locking-screw assures adjustment of torque setting Zero-Backlash keyless shaft friction connection with tapered sleeve Shifting ring with adjusting dial for exact torque adjustment Setting ring with fine pitch threads for precise torque adjustment 58
KT-SI Compact Zero-Backlash, torsionally stiff torque limiter Zero-Backlash with torque up to 050Nm Maximum shaft diameter up to 60mm Fits a wide variety of applications Standard FT or with FT-4.5 frictionally engaged keyless hub-shaft connection Standard and synchronous designs available Combine with OTEX GS for zero-backlash vibration dampening Combine with ADEX -NC Servo coupling for higher stiffness Call KT for Availability Design FT Design FT-4.5 Keyless Connection Design FT-4.5 Keyless with OTEX GS 6.0 hub shaft connection 0 0 Speed PM Torques [Nm] ) KT-SI Compact disk spring layer T T T 5 4 0 8 0 60 9 7 8 54 8 5 9 60 8 5 70 55 5 0 80 0 60 440 80 85 60 70 0 740 0 47 56 65 70 8xM4 0 6 7 80 85 8xM5 5 75 85 95 00 8xM6 45 90 00 0 5 8xM6 50 00 6 0 5 8xM8 Dimensions Type FT (mm) ) To convert torque from Nm to lb in please multiply Nm values above by 8.85. (For example: 5Nm x 8.85 = 44.5 lb in) H = d max. D D D D A d M L l l l l 4 l 5 SW Hub 40 8 7 5 7.5 7. 48 8 4 7 8 7.5 59 4 9 6 9 0.5 8.8 64 6 0 7 0 0.0 75 8 0 0. UFLEX KT-SI Compact Dimensions with taper sleeve type 4.5 d max. L L L 4 d S SW Dimensions type FT with OTEX GS (mm) OTEX GS d max. d max. D 4 D 5 L G L 5 L 6 D A 0 5 40 4 47 4.8 7 0 0 46 49 56 57 4 0 40 57 60 67 67 4 0 50 6 66.5 7 7.5 4 0 60 75 78.5 86 89 4 0 0 4 5 8 55 70 0 47 0 70 0 8 0 8 65 85 9.5 54.5 5 85 8 40 45 80 00 46 67 45 00 4 50 55 95 5 59 7 50 5 48 60 6 05 5 8 87 56 5 59