Couplings. highly-flexible ring coupling

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1 product catalogue Couplings GKN Stromag TRIR highlyflexible ring coupling

2 GKN Stromag TRIR highlyflexible ring coupling Special designs (see page 27) > TEF...F RR To connect a flywheel or equivalent to a flanged shaft. The internal selfaligning bearing allows a cardanic motion. DD_888 TEF...W R / KHR 2 in 1 combined with a hydraulic clutch to connect two machines from shaft to shaft. DD_88284 TEF...W RR Combined with a pneumatically acutated conical clutch to connect a flywheel or equivalent to a shaft. DD_

3 Catalogue No. D 87, This catalogue for GKN Stromag TRIR couplings cancels and replaces all former editions. We reserve the right to modify the dimensions and constructions. GKN Stromag products comply with the Quality Standard to DIN ISO content GKN Stromag TRIR highlyflexible ring coupling GKN Stromag TRIR coupling concept 4 Instruction for the designer > Explosionproof application 5 Classification rules Mounting instructions and delivery extent > Storing of rubber flexible elements 7 GKN Stromag TRIR Output table 8 Series TEF and TEW Charakteristics of the GKN Stromag TRIR coupling 32 Coupling design, question sheet 34 Use in potentially explosive environments, question sheet 3

GKN Stromag TRIR highlyflexible ring coupling GKN Stromag TRIR coupling conzept > The GKN Stromag couplings TRIR are highlyflexible rubber couplings with linear characteristic, which are in

With couplings up to 1000 Nm, as a standard the outer connection dimensions comply with the flywheel connections of the SAE standard J20.

4 GKN Stromag TRIR highlyflexible ring coupling GKN Stromag TRIR coupling conzept > The GKN Stromag couplings TRIR are highlyflexible rubber couplings with linear characteristic, which are in particular suitable for diesel engine and resiliently mounted drives. The torque range of this series is 1 to 00 Nm. With couplings up to 1000 Nm, as a standard the outer connection dimensions comply with the flywheel connections of the SAE standard J20. The larger couplings are mainly designed with metric flywheel connections. The GKN Stromag coupling TRIR combines a ring element of rubberflexible material and a diaphragm of spring steel. The ring element is torsionally flexible and assures a radial flexibility. The diaphragm assures the axial flexibility, allowing offset of the coupling in all directions. For each size GKN Stromag TRIR, various elastomer qualities and torsional stiffnesses are available thus allowing the exact adaptation to drives subject to torsional vibrations. The GKN Stromag coupling TRIR can also be supplied in multirow combinations of ring elements. Type of application The Stromag TRIR coupling has been designed for application with piston engines. The ring element can be connected directly to the flywheel of an engine. The connection of two shafts or two flanges is also possible when executed accordingly. Due to its high axial and radial offset capacity, the coupling is ideal for applications with resiliently mounted drives. A good structureborne noise insulation is achieved by the great rubber volume. 4

5 Instruction for the designer > The metal parts of the GKN StroamgTRIR coupling are made of steel. The ring element is made of different elastomer materials in various torsional stiffnesses. The design with natural rubber (NR) can be used within the temperature range from 50 C up to + C. Due to the damping work, the flexible element can reach higher temperatures than the ambient temperature. When casing the coupling by a protective or covering cap, this has to be taken into consideration or a sufficient aeration and heat dissipation has to be assured. The GKN Stromag coupling TRIR meets the requirements of directive 94/9/EG (ATEX 95) and can be used in potentially explosive zones. The coupling can be supplied with approval to EN as per the regulations of the classification societies. Use in potentially explosive environments The coupling meets the requirements of directive 94/9/EG (ATEX 95) and can be used as follows: a. In Zone 1 (GazEx, category 2G) in explosion groups IIA, IIB and IIC, T4, b. In Zone 2 (Gaz Ex, category 3G) in explosion groups IIA, IIB and IIC, T4, c. In Zone 22 (DustEx, category 3D) with dusts having a min. firing power > 3mJ, T5 C The GKN Stromag TRIR coupling compliance with the requirements for each of these zones / categories is documented in the form of the following codes on our products: Use in gas atmospheres: II 2G c T4 Use in dust atmospheres: II 3D c 5 ºC Use in potentially explosive environments must be based on the request form annexed to this catalogue. Classification rules For survey of the coupling by a classification society, the regulations of the society have to be adhered to. The coupling characteristics may differ from the definitions given in this catalogue. Accordingly prepared data sheets are available on request. Some classification societies require emergency operation devices for marine main drives. 5

GKN Stromag TRIR highlyflexible ring coupling Emergency operation device The GKN Stromag TRIR coupling can be supplied with an emergency operation device (i.e. safety device against spinning).

6 GKN Stromag TRIR highlyflexible ring coupling Emergency operation device The GKN Stromag TRIR coupling can be supplied with an emergency operation device (i.e. safety device against spinning). With rupture of the flexible elements, a torsionally stiff connection with free play between the input and output sides is achieved by meshing claws. A timelimited emergency operation with limited torque is possible. The admissible torque and speed rat ings have to be calculated separately by a torsional vibration caculation with torsionally stiff transmission. Instruction for selection of the coupling > For GKN Stromag TRIR couplings the static and dynamic characteristics are known. On the basis of these characteristics it is possible to select the suitable coupling size for the actual application. The decesive factors are the transmitted power and the torsional vibration charges. For stationary system conditions use T KN, T KW and P KV ; for nonstationary system conditions use T Kmax. The technical departments of GKN Stromag AG are pleased to assist with the selection of the coupling, in particular by a torsional vibration calculation. To that effect, please copy the question sheet given in this catalogue, complete and return it to us. Normally the flexible couplings present the predetermined breaking point of a drive line. Overloading of the drive line normally results in the failure of the flexible coupling elements. This behaviour is intended and protects the entire system against unexpected damage. Consequential damage resulting from this safety function of the coupling has to be taken into consideration in advance by the system designer and has to be monitored or prevented resp. by suitable measures.

7 Mounting instructions and delivery extent > The GKN Stromag TRIR coupling can be screwed directly to the flywheel of the engine by means of its ring element (3) through the connection flange (4). Through the center ring (), the counterside of the ring element (3) is screwed to the diaphragm (8) which transmits the torque to a connected machine, a gearbox, or similar through the connection with the pressure ring (7) via the hub (1). The ring element of size is split into 2 halves in order to assure a simple radial mounting. The delivery extent of the GKN Stromag TRIR coupling in standard execution comprises: 1 = Hub 3 = Ring element 4 = Connection flange = Center ring 7 = Pressure ring 8 = Diaphragm 9, 10, 11, 15 = Srews = Nut = Washer Storing of rubber flexible elements When suitably stored, rubber flexible elements maintain their characteristics for several years without change. It is of great importance to protect the stored parts against oxygen, ozone, heat, light, moisture and solvents. Solvents, fuels, lubricants, chemicals, acids, disinfectants etc. must not be stored in the same room with the elements. The temperature in the store should be between +10 ºC and +25 ºC. All light sources emitting ultraviolet rays are dangerous and should be avoided. Ozone producing equipment such as lights and electric motors should be kept away from the storage area. The relative humidity should not exceed 5 %. Further details are given on DIN sheet 771. Compared with elements made of natural rubber, rubberflexible elements made of temperatureresistant material ECO are ozone and oil resistant. 7

8 GKN Stromag TRIR highlyflexible ring coupling Output table > Nominal torque Maximum torque Adm. alternating torque Adm. speed Adm. axial displacement Coupling size T kn Nm T kmax1 1) Nm T kmax2 2) Nm T KW Nm n max K 3) a min R 3 R 313 R R 322 R 323 R R 4 R 413 R R 422 R 423 R R 5 R 513 R R 522 R 523 R R 42 R 43 R R 742 R 743 R R 842 R 843 R R 942 R 943 R R 1042 R 1043 R R 12 R 13 R R 42 R 43 R ) for transient repetitive vibrations durin start / stop, clutching etc. 2) for rare occasional peak loads, e.g. short circuits in generators 3) dyn. axial displacement K a dyn = 0.33 K a 4) at n max = 00 min 1, for higher speed ratings K r (n) = 00 min1 K r n 5) at: TW = 0.2 T KN ; T = 0.8 T KN ; f = 10 Hz; ϑ = C 8

9 Axial reaction force Adm. radial displacement Adm. max. radial displacement radial stiffness torsional stiffness relative damping Adm. damping power F a 8) kn K r 4) ) K ) rmax C 7) r kn/ C Tdyn 5) 7) knm/rad Ψ 5) 7) P KV 0 ) 9) W 0,2 0,2 0, ,38 0,52 0,75,9 9,5 13,5 0, ,2 0,2 0, ,49 0,75 9,4,5 20,0 0, ,27 0, ,72 22,5 34,5 0,27 0, ,2 22,5 34,5 0,45 0, ,4 2,0 70,0 9, ,45 0,45 0,0 0,0 0, ,9 2,4 1,4 2,0 3, ,7 0,90 0,90 0,90 1, 2,4 4, , ,92 0,92 0,92 1, 2,7 4, , ,92 0,92 0,92 1,9 3,1 5, , ,0 3,3 5, , ,2 3,, , , 1, 1, ,5 4,0, , ) For coupling temperatures exceeding C, this value must be reduced by the temperature factor 7) Tolerances until ±15 % related to the material are possible 8) at shaft offset W a = 1 9) The value P KV 0 describes the damping capacity to be absorbed over 1 hour. Permanently absorbed damping capacity P KV = 0.5 P KV 0 9

10 GKN Stromag TRIR highlyflexible ring coupling Series TEF...W R > Figure 1 Figure 2 B side A side B side A side DD_834 DD_831 Coupling size Flywheel Connection to SAE J20 11,5 11,5 1 1 Figure Diameter Lengths Masses d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 kgm1 m Ø Ø Ø Ø Ø Ø Ø Ø x Ø Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change 10

11 Series TEF...W R > Figure 1 Figure 2 B side A side B side A side DD_834 DD_831 Coupling size Flywheel Connection to SAE J Figure Diameter Lengths Masses d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 kgm1 m Ø Ø x x x x x x Ø Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change 11

12 GKN Stromag TRIR highlyflexible ring coupling Series TEF...W R > Figure 1 Figure 2 B side A side DD_8 DD_88 Coupling size 4 74 Flywheel Connection to SAE J20 metr metr Figure Diameter Lengths Masses d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 kgm1 m x Ø x Ø x x Ø x Ø x x Ø Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 ) + countersunk for hexagon srew ISO 4017 Dimensions and construction subject to change

13 Series TEF...W R > Figure 1 Figure 2 B side A side DD_8 DD_88 Coupling size Flywheel Connection to SAE J20 metr. 24 metr. metr. metr. metr. Figure Diameter Lengths Masses d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 kgm1 m x Ø x Ø x x Ø x Ø x Ø Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change 13

14 GKN Stromag TRIR highlyflexible ring coupling Series TEW...W R > B side A side DD_829 Coupling size Diameter d 1 vor d 1 max d 2 vor d 2 max e 1 e 2 h 1 h Lengths I 1 n 1 p 1 o 1 s 1 W 1 W Masses kg m 1 m Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request Dimensions and construction subject to change

15 Series TEW...W R > B side A side DD_883 Coupling size Diameter d 1 vor d 1 max d 2 vor d 2 max e 1 e 2 h 1 h Lengths I 1 n 1 p 1 o 1 s 1 W 1 W Masses kg m 1 m Mass mom. of inertia kgm 2 J 1 J ) at max. bore diameter. Other coupling sizes on request Dimensions and construction subject to change 15

16 GKN Stromag TRIR highlyflexible ring coupling Series TEF...W RR > Figure 1 Figure 2 B side A side B side A side DD_832 DD_8 Coupling size Flywheel Connection to SAE J20 11,5 11,5 1 1 Figure Diameter Lengths Masses kg d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 W 3 m 1 m 2 m Ø Ø Ø Ø Ø Ø Ø Ø x Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request Dimensions and construction subject to change 1

17 SERIES TEF...W RR > Figure 1 Figure 2 B side A side B side A side DD_832 DD_8 Coupling size Flywheel Connection to SAE J Figure Diameter Lengths Masses kg d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 W 3 m 1 m 2 m Ø Ø x x x , x x x Ø Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change 17

18 GKN Stromag TRIR highlyflexible ring coupling Series TEF...W RR > Figure 1 Figure 2 B side A side B side A side DD_887 DD_888 Coupling size 4 74 Flywheel Connection to SAE J20 metr metr Figure Diameter Lengths Masses kg d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 W 3 m 1 m 2 m x Ø x x x Ø x Ø x x Ø Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change

19 Series TEF...W RR > B side A side DD_887 Coupling size Flywheel Connection to SAE J20 metr. 24 metr. metr. metr. metr. Figure Diameter Lengths Masses kg d 1 vor d 1 max a 1 b 1 e 1 e 2 h 1 h 2 k 1 I 1 n 1 p 1 o 1 s 1 W 1 W 2 W 3 m 1 m 2 m x Ø x Ø x x Ø x Ø x Ø Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request ) + countersunk for cyl. srews ISO 472 Dimensions and construction subject to change 19

20 GKN Stromag TRIR highlyflexible ring coupling Series TEW...W RR > B side A side DD_8 Coupling size Diameter d 1 vor d 1 max d 2 vor d 2 max e 1 e 2 h 1 h Lengths I 1 n 1 p 1 o 1 s 1 W 1 W 2 W Masses kg m 1 m 2 m Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request Dimensions and construction subject to change 20

21 Series TEW...W RR > B side A side DD_884 Coupling size Diameter d 1 vor d 1 max d 2 vor d 2 max e 1 e 2 h 1 h Lengths I 1 n 1 p 1 o 1 s 1 W 1 W 2 W Masses kg m 1 m 2 m Mass mom. of inertia kgm 2 J 1 J 2 J ) at max. bore diameter. Other coupling sizes on request Dimensions and construction subject to change 21

22 GKN Stromag TRIR highlyflexible ring coupling CharaCteristics of the GKN Stromag TRIR coupling > T KN The nominal torque of the coupling can be transmitted continuously over the admissible speedrange. The nominal torque T N of the installation must not exceed that of the coupling. T KN T N T Kmax1 The max torque T Kmax1 of the coupling can be accepted as peak load; it must not be exceeded by normal nonstationary peak torques T max1 of the system. Normal nonstationary operation conditions of a system cannot be avoided and reoccur (e.g. start and stop processes, resonance run, changeover processes, accelerations, etc.). T Kmax1 T max1 T Kmax2 The max. torque T Kmax2 of the coupling can be accepted as rarely occurring peak load and must not be exceeded by normal nonstationary peak torques T max2 of the system. Abnormal non stationary peak torques of a system can be avoided and do not belong to the intended operation (e.g.: emergency stop, missynchronisation, shortcircuit, etc.). T Kmax2 T max2 An overloading of the GKN Stromag TRIR coupling by abnormal nonstationary peak torques T max2 of the system reduces the lifetime and in single cases it is tolerated. T Kw The permissible continuous alternating torque states the amplitude of the permissible continuous periodic torque variations. This torque may be superimposed upon the basic load equal to T KN. With torsional vibration stress, the admissible damping output P KV must also be checked. K a Permissible axial offset of the coupling.the axial offset W a of the shafts must be smaller K a. K a W a K r Permissible radial offset of the coupling. The radial offset Wr of the shafts must be smaller Kr. K r W r The value of Kr stated for the GKN Stromag TRIR coupling reffers to coupling shaft speeds up to 00 rpm. The conversion to other speeds is made by the equation With ambient temperatures higher than C, the admissible radial offset must be reduced by the temperature factor S ϑkr. K r (n) = 00 min1 K r n K r (T U ) = K r S ϑkr K w Permissible angular offset of the coupling. The angular offset of the shafts W W must be smaller K W. For GKN Stromag TRIR couplings a K W of 0.5 º is admissible. However, this value must only be used when no other axial shaft offset exists. K w W w 22

23 CharaCteristics of the GKN Stromag TRIR coupling > F a The axial restoring force of the diaphragm is stated for an offset of 1. Steel diaphragms have a progressive characteristic.forms for the calculation of larger axial offsets on request. C r The radial stiffness mentions the relation between radial restoring force and radial offset. The stated values apply to the coupling at working temperature, with a surface temperature of approx. C. C Tdyn The dynamic stiffness mentions the relation of a torque amplitude to the rotary angle amplitude during a vibration process. The torque amplitude is superimposed to a preload (coupling torque). For the GKN Stromag TRIR coupling the value C Tdyn is constant over the coupling torque (linear characteristic line). It changes, however, in relation to the amplitude, the frequency and the temperature of the flexible element. C Tdyn = T el ϕ w The data for C Tdyn relates to a coupling torque of 0,8 x T KN, an alternating torque of 0,2 x T KN, a frequency of 10 Hz, with a coupling at working temperature with a surface temperature of approx. 50 C. Ψ The proportional damping is a factor for the capacity of a coupling to convert a part of the occurring cyclic energy into heat. The damping can be determined by the damping loop (hysteresis loop). The area AD is a factor for the damping work WD during a vibration cycle. The area Ael represents the work done in deflection Wel at a given load. The data for relates to a coupling torque of 0,8 x T KN, an alternating torque of 0,2 x T KN, a frequency of 10 Hz, with a coupling at working temperature with a surface temperature of approx. 50 C. Ψ = W D W el = A D A el 23

24 GKN Stromag TRIR highlyflexible ring coupling CharaCteristics of the GKN Stromag TRIR coupling > P kv The admissible damping capacity indicates how much damping (heat) the coupling can permanently absorb resp. dissipate. The sum of the damping power of each vibration order (i.e. ΣP Vi )) must be less than the damping power capacity of the coupling. P vi = π 2π Ψ T wi f i C tdyn The stated value P KV0 describes the damping capacity which can be absorbed over the period of 1 hour. To determine the damping capacity which can be permanently absorbed (P KV ), the value P KV0 has to be multiplied by the factor 0.5. With an ambient temperature higher than ºC, the admissible damping capacity must be reduced by the temperature factor S ϑpkv. P KV (T U ) = P KV S ϑpkv Temperature factors S Kr and S ϑpkv Temperature factors shall take into consideration the reduction of the physical characteristics of rubberflexible material caused by heating. The coupling temperature is determined by the ambient temperature plus an internal heating caused by internal material friction in the rubber volume, resulting from alternating torques and alternating loads due to shaft offsets. With higher ambient temperatures the coupling characteristic values Kr and P KV must be reduced through the corresponding temperature factors S ϑkr and S ϑpkv. 3.0 S ϑpkv 2.5 Correction factors S ϑ S Kr 1.0 0, Ambient temperature [ºC] 24

25 Question sheet to allow the determination of flexible couplings > Driving machine Motor system (electric motor, combustion engine etc.) Motor or engine type (make, type) Engine mounting (rigid or resilient) SAE housing of engine Flywheel centering diameter Nominal output kw Nominal speed min 1 Speed range min 1 Nominal torque Max. torque (max. breakdown torque) Nm Nm Mass moment of inertia kgm 2 Number of starts resp. reversing processes per hour Reduction Mass moment of inertia kgm 2 System (generator, fan, compressor, fixed or controllable pitch propeller) Main or auxiliary drive Type of construction (selfsupporting or flangetype connected) Gear Driving machine Mass moment of inertia kgm 2 Assembly site in the driving line (provide a principle sketch) Coupling Bore dimensions for the coupling hub Ambient temperature ºC, ºK Classification society Type of vessel Ice class 25

26 GKN Stromag TRIR highlyflexible ring coupling Use in potentially explosive environments, question sheet > Applications Group II (above ground) Potentially explosive atmosphere of air and gas dust Zone (Category) gas Zone 1 (Category 2G) Zone 2 (Category 3G) dust Zone 22 not electrically conducting (Category 3D) T1 Temperature category in atmosphere with gas gas T2 T3 T4 5 C Max surface temperature dust < C 20 C to +40 C Ambient temperature other ambient temperatures only with certain restrictions 2

27 Special designs > TEF...W RR / MWU 2 in 1 combined with an electric poleface friction clutch to connect two machines from shaft to shaft. DD_88282 TEF...W RRDP For mounting to a propeller shaft of a marine drive, additionally to absorb axial thrust. DD_88281 TEF...W 3R To connect a flywheel or equivalent to a shaft. Low torsional stiffness by 3 ring elements in series. DD_882 27

28 GKN Land Systems 2015 PO Box Ipsley House Ipsley Church Lane Redditch Worcestershire B98 0TL P: +44 (0) Couplings Clutches Gearboxes Driveshafts Brakes Controls Electric Wheels GKN Stromag AG Hansastraße unna p: F: The GKN Stromag ag is a company of GKN land Systems Find out more about GKN Stromag global trade representatives GKN LS 78 EN 1013

Stromag TRI-R Highly-Flexible Ring Coupling

Stromag TRI-R Highly-Flexible Ring Coupling A L T R A I N D U S T R I A L M O T I O N Stromag TRIR HighlyFlexible Ring Coupling Stromag TRIR HighlyFlexible Ring Coupling Special designs TEF...F RR To connect a flywheel or equivalent to a flanged