As in the torque coupler, usually one half is the driver and the other half is the follower. Torque, moment, moment of force, rotational force or turning effect is the rotational equivalent of linear force. As can be seen from the attached calculations, the bolts. This application is able to calculate the torque capacity of a bolted flange coupling based in the geometry, number of bolts, and coefficient of friction between surfaces. This unique clutch is built with highly proven maxtorque components combined with a lovejoytype coupling. Internalcombustion engines produce useful torque only over a limited range of rotational speeds typically from around 1,0006,000 rpm for a small car. The shoulder which contains the seal must fit squarely against the mating surface and. The purpose of this design is to prevent damage to the equipment motor, gearbox, pump, etc. In case of overload, a patented disengagement mechanism disconnects the input and output without residual torque. Higher number of bolts means larger torque transmission and lower misalignment absorption capacity.
Tightening and torque recommendations for hydraulic. Our couplings can be used in conjunction with flexible. John cranes metastream t series metallic membrane couplings, incorporate scalloped, stainlesssteel, flexible membranes. Patented jacking bolt feature compresses coupling for.
Freedom disc couplings are one of falks many backlashfree coupling options. Thomas disc couplings installation and maintenance. Hydrokinetic drives, hydraulic torque converters and. Insert the elastomer ring and press the two coupling halves. An overtightened coupling may be just as apt to leak as an under tightened coupling. Torque forms part of the basic specification of an engine.
Just as a linear force is a push or a pull, a torque can be thought of as a twist to an object. Assemble and tighten the set screws, using a calibrated torque wrench, to the values. The concept originated with the studies by archimedes of the usage of levers. Torque adjustment possible even in assembled condition. Power transmission couplings, api couplings john crane. Gc continuous sleeve used on highspeed equipment with low inertia requirements. Open end wrench for coupling hex bolts see table 1. Using a torque wrench, tighten the clamp screw e to the appropriate torque indicated in table 2.
However, certain requirements need to be met to achieve this. Torsiflexi disc couplings coupling products tb woods. The ability to transfer rotational force between shafts is termed torque. Er page 1 of 4 general description the tsc coupling is a precision built 6link coupling comprising two flexible disc assemblies connected by a torque tube. Before taking the disc packs off, first install one hub bolt through each disc pack and secure with a locknut. The pins in the coupling are subjected to shear and it is a good practice to ensure that the shear plane avoids the threaded portion of the bolt. Large bolts for high clamp load, increasing frictional torque load, and reduced bolt bending stress. Sleeve, a hollow cylinder, is fitted on the ends of input and output shaft with the help of a sunk key. Torque is transmitted through two sets of membranes, separated by a spacer element, and protected by two adaptable guard rings in a preassembled transmission unit. The required diameter of the intermediate shaft is calculated from the nominal torque of the shaft system at 100% mcr. Another definition of torque is the product of the. Installation involves fitting the hubs to the machinery shaft ends, introducing the transmission unit, then securing with the attachment screws. Gear coupling applications world leader in modular.
Unlike the rigid coupling the shear stress due to torque transmission is given in terms of the tangential force f at the outside diameter of the rubber bush. Bolt type eb exposed bolt coupling type ff full flex fr flex rigid mmff mill motor full flex ssff slide full flex ssfr slide flex rigid 1 12 h eb ff. The coupling bolt design depends on the required diameter of the intermediate shaft. Falk flanged rigid gear couplings installation and. For the proper operation and optimal lifetime of lamidisc. Coupling answers where the world turns for coupling. Shear pin couplings are used to limit the peak torque to a predetermined. The most popular flexible shaft coupling in japan that is compliant with jis b 14521991 flexible flanged shaft couplings. It provides a rigid joint by firmly gripping the entire circumference of the copper tube groove. Idespread interest in hydraulic drives was created in this country when hydraulic couplings were incorporated in several popular automo biles. Tlk coupling range is particularly suited for hightorque electric motor or turbine drives in critical process industry, marine and power generation. Version with two half couplings and torque flange as spacer. Series h couplings can be supplied in fullflex, flexrigid, floating shaft and spacer arrangements as well as custom designs. For bolting specifications that do not have a published proofload, it is usually calculated at 92% of minimum yield strength.
Torque limiting couplings protect mechanical equipment. The module construction allows assemblies of unlimited torque capacity, protecting the largest drive lines made. A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. We offer special maina couplings and spindles custom machined per order. When properly and evenly tightened to the recommended torque, the coupling installation is complete. If the coupling is assembled, remove the locknuts, bolts, and washers. It is a crucial aspect of any industrial operation, as torque permits the driving power from the motor to. An s and s coupling also known as a bicycle torque coupling or btc is a coupling which enables bicycle frames to be separated into smaller pieces, usually to facilitate packing and transporting. Coupling answers where the world turns for coupling knowledge. The bolt is stressed up to the proofload value, and if there is no deformation, elongation, or fracture, then the bolt is deemed to have passed. Shop gear coupling fastener sets at and browse our extensive selection of industrial parts and supplies for all your mro needs. The torque in a coupling is transmitted in two waysby the shear strength of the expanded bolt in the hole and by friction between the flange faces created by preloading the bolt.
A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear. Tlks api couplings john crane power transmission couplings. It is used where direct or inline alignment is required post hole augers, water pumps, blowers, etc. The second sort would be to check the torque requirement of the application versus the torque rating of the coupling.
The module comprises the following components from left to right. Robust disc pack design allows for greater torque load in a smaller coupling, resulting in lower weight. They can be built into the frame by the frame manufacturer when the frame is originally assembled or they can be added to a frame after it is finished. Shop coupling bolts at and browse our extensive selection of industrial parts and supplies for all your mro needs. The flexing discs are stainless steel, the bolts high tensile steel and the other components. The 820 series has been designed using the modular principle to accommodate hightorque, high and lowspeed applications with the flexibility to accommodate a wide range of torque settings. Final assembly with the coupling in good alignment, the bolts will fit through the holes in the flanges and the disc packs easily. This easytouse solution helps prevent damage to critical, highvalue driveline components due. Installation instructions for single flex six bolt composite. It consists of a flexible joint fixed to each shaft. Torque wrench with sockets for coupling hex nuts and hub set screw or clamp collar screw see table 1 and table 2.
The gear coupling selection in most cases will be determined by the nominal shaft size. Torque limiting couplings prevent overloading of sensitive motors, gearboxes and machine components. When higher speeds are required please consult ameridrives couplings. A highly corrosion resistant grade of stainless steel. These instructions are intended to help you to install and maintain your thomas spacer type series 718 coupling, with 8 bolts per disc. Maina gear coupling flanges have metric bolt patterns. Minimum coupling rating service factor x torque nm. If you cant gauge how tight to do a nut and bolt up using a ring spannerallen key after looking at the thread pitch then you probably shouldnt be working on it and start with some more basic things. Hydrokinetic drives, hydraulic torque converters and hydraulic couplings by nicholas a. Normal operating torque is used unless a peak or cyclic torque is known.
Apr 28, 2017 thanks for the a2a torque and speed coupling is a method of connecting the wheels and the engine in a hybrid electric vehicle hev in which a planetary gear system is used to decouple the engine speed and a shaft fixed gear unit is used to decoup. Couplings and mounting parts for torque applications hbm. The straightfaced, involute stub tooth form is used in the series h coupling, sizes 8 to 30. How to quickly calculate coupling sizing torque given how frequently coupling users and application engineers are required to calculate coupling sizing torque, lovejoy built a free coupling sizing torque calculator that is readily available both on the internet, as well as in iphoneandroid smart phone form pictured left. The two joints are connected by a third shaft, called the spindle.
Select a coupling for reversing service to connect a gear drive lowspeed shaft to a runout mill table roll. A space is provided between the screw sections for a hanger and. Coupling sizing torque how to quickly calculate inclusive. This application also gives the tightening torque of the bolts, the clamp force from its tightening and suggest a different geometry to improve the torque capacity. Only exposed bolt flanges are available in sizes 8 to 30.
Hp horsepower is the actual or transmitted power required by the application if unknown, use the motor or turbine nameplate rating and rpm is. Torsiflexi couplings consist of 2 hubs and a factory assembled transmission unit. Falk lifelign gear couplings save up front money and. Simple structure comprised of a flange and coupling bolts. Fittings auto bulbs and harnesses electrical shop supplies cotter pins. Tightening and torque recommendations for hydraulic couplings. The electric motor rating is 50 hp at the base speed and the system peak torque at the coupling is estimated to be 150,000 lbin. Protect mechanical equipment, or its work, from damage from mechanical overload with use of this range of torque limiting couplings. Thanks for the a2a torque and speed coupling is a method of connecting the wheels and the engine in a hybrid electric vehicle hev in which a planetary gear system is used to decouple the engine speed and a shaft fixed gear unit is used to decoup. This unique clutch is built with highly proven max torque components combined with a lovejoytype coupling. Feb 28, 2015 this application is able to calculate the torque capacity of a bolted flange coupling based in the geometry, number of bolts, and coefficient of friction between surfaces. Manufacturer of coupling bolts including split coupler pinch bolt sets. Magnetic torque couplers magnetic linear couplers dura.
Maximum recommended torque for dry nptf tapered pipe threads bolt size line size torque nm torque lbft. Maina is a highquality manufacturer of gear coupling products that provide very long service life. Coupling style h series h bolt type eb exposed bolt coupling type ff full flex. Bushings can be replaced just by removing coupling bolts. For extreme or unusual operating conditions, check coupling more frequently.
Eaton torque limiting couplings eaton, a world leader in clutchbased drive trains for grinding mills, introduces an advanced solution. Metric coupling nuts license plate fasteners flange bolts 10. Hp horsepower is the actual or transmitted power required by the application if unknown, use the motor or turbine nameplate rating and rpm is the actual speed the coupling is rotating. Install and torque fasteners to the value specified in table 1, page 3. Jan 30, 2015 the gear coupling selection in most cases will be determined by the nominal shaft size. Torque flange with 2 modulflex half couplings and spacer. Installation instructions for single flex six bolt.
The most common stainless steel for general hardware use. Linear couplers are often simpler to design and to construct when compared to torque couplers because the movement is linear and nonrotational. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path resulting in a curved flexible beam of helical shape. The grinnell figure 640 pivot bolt rigid coupling joins rolled grooved, harddrawn copper tubing systems cts. Couplings for torque transducers are a key accessory. Similar to a torque couple, a linear coupler relies on magnetic interaction between two coupler halves. The eas reverse reengages automatically simply by rotating backwards slowly, without the need for pneumatics or hydraulics ideal for drives which cannot be accessed for reengagement. Installation instructions for single flex six bolt composite disc couplings 1. Torque where sae gr 558 bolts are specified tighten to 95 ft. G large flanged sleeve for very high torque applications, including power plants, mining, cement, steel and metal mills, paper, sugar, rubber and other large industrial plants.
Coupling flywheel adapter hub rough bored center ring 1 per coupling tpacktm disc pack tomaloy parts kit consists of tpacks, locknuts and washers for one coupling part no. If the coupling arrived assembled, the disc packs are still attached to the center ring. Clamp bolt tightening torque and shaft coupling torque. The shear pin cartridge coupling is a series h type coupling designed to physically disconnect the driving and driven equipment during torque overload. The tooth flanks and outer diameter of the external.
Now with increased torque ratings, larger bore capacities, and extended sizes. Using these sophisticated devices means that loads between the bolts are more uniformly distributed so that the coupling halves are held together considerably more. It is a crucial aspect of any industrial operation, as torque permits the driving power from the motor to be passed to a shaft. The coupling clutch also provides the designeruser with flexibility in matching a lovejoytype coupling to. They are mounted between coupling halves, or ujoint flanges or other arrangements. Maintenance whenever the equipment is down for general maintenance or service, recheck the tightening torque of the flange fasteners. Max bores matched to nema motor shafts, resulting in up to 60% weight savings per application. Tlk coupling range is particularly suited for high torque electric motor or turbine drives in critical process industry, marine and power generation. G10 shrouded bolt agma coupling size 1 112 2 212 3 312 4 4.
Hardware kits consists of all fasteners, nuts and lock washers that maybe required for a coupling assembly. A torque flange is a precision transducer that enables very small uncertainties of measurement to be attained. We also make couplings to mount on mill motors with. Maximum torque at the coupling must not exceed rated torque of the coupling. For couplings with aluminum shell and inner sleeve, do not exceed 40 ft.