Do not attempt to lift a coupling without the use of lifting equipment where the weight is excessive. Maina gear coupling flanges have metric bolt patterns. Use the following steps to help make the selection process easier. Gear coupling design large bore capacity, with oring seal. Amerigear gear couplings were designed in the early 1950s when the amerigear fully crowned gear tooth was patented. For other coupling diameters multiply the value from the table by the appropriate factor. Safety equipment, coupling guards, and shields are not provided by, nor are they the responsibility of lovejoy, inc. Whether the need is an elastomeric or metallic design, dodge can provide a coupling with the potential. Select a gear coupling to connect a 500 hp, 1170 rpm electric motor to a drive high speed shaft of a maneuvering winch. This manual provides detailed instructions on installation, maintenance and parts identification for falk lifelign gear couplings, types g20, g32, and g52.
It is compact and lighter and thus suitable for installation where space is a constraint. A proper surface protection coat normally realizes protection against corrosion on the inner and interface surfaces. Refer to the contract instruction manual or gear drawing for details on installation of these products. Gear couplings are designed to provide a mechanical connection between the rotating shafts of mechanical equipment, using gear mesh accommodate inherent misalignment while transmitting the power and torque between the connected shaft. Coupling selection guide introduction there is an extensive range of couplings available on the market today. Gear flex coupling installation procedure the performance and the life of the gear coupling depend on how you install and service them. Designing your power transmission system, and keeping it running smoothly and profitably, is a complex challenge.
It is important that the coupling is properly positioned. The manufacturer of these products, baldor electric company, became abb motors and mechanical inc. The center portion of the spacer can be taken out, just as in the 5sc. Installation of the drive coupling assembly on alternators with the shipping washer in place will cause interference with the face gear on the crankshaft and will result in damage to the engine and alternator. For nema input adapters, follow the motor installation instructions below to insure full coupling engagement onto the input shaft. The torque is transmitted from hub to sleeve and viceversa by the working gear teeth, and between the connecting flanges of the two hubs by the set bolts. This manual provides detailed instructions on installation, maintenance, and. Therefore, the lubrication is forced into the teeth by centrifugal force.
May 11, 2016 coupling type of coupling coupling used in industriesflexible coupling rigid coupling gear coupling duration. During any inspection of the coupling when gear tooth wear is evident or the seal is leaking, it is recommended to replace the worn parts. Fasts coupling for medium to heavy duty applications. Mechanicalmetallic coupling differentiating criteria general purpose couplings high performance couplings design types gear, grid, chain, disc and diaphragm gear, disc and diaphragm. Proper maintenance of gear couplings is key to avoid early wear of the gear teeth and extend the couplings life.
Sprocketssheaves are commonly mounted to a shaft with a tapered bushing that fits a mating tapered bore in the sprocketsheave. Certain elements of gear coupling installation must be considered if optimum reliability is to. Flexible gear coupling installation and maintenance instructions follow these steps to correctly install the flexible gear coupling fig. Amerigears flexible gear couplings offer operational benefits of maximum loadcarrying capacity with minimum size, maximum reliability and long life. Flexible gear coupling installation and maintenance instructions. Abb, baldor electric, and dodge can package together the controls, drives, motors, and couplings needed for common pumping applications. The two joints are connected by a third shaft, called the spindle. We offer you highquality components for designing and maintaining a power transmission system, on fast turnaround. Improper installation can damage the bushing andor the sprocketsheave. In order to conform with todays high misalignment capacities, this oring must fit into a groove that is larger than the ring. For most highspeed gear couplings, an expensive filter and guard are needed for forced lubrication and oil recovery, but these are not. Gear couplings consist of two shaft hubs with external teeth, which are then connected. For g52 with flex hubs on the short floating shaft, refer to steps a through c on page 5. In some instances, the gear split hardware will utilize alternate tensioning devices.
All personnel involved in the installation, service, operation, maintenance, and repair of this coupling and the connected equipment must read, understand, and comply with these installation and maintenance instructions. Do not approach or touch a coupling while it is rotating. While the nylicon gear type flexible coupling compensates for a certain amount of misalignment, its life is greatly increased if any errors present are reduced as much as possible. Fast coupling disassembly type sc spacer flange martin offers the rst true dropout spacer assembly for the quadraflex sc spacer couplings feature all standard spacing requirements for the pump industry. General assembly and maintenance instructions, are established for standard lovejoy gear couplings. Ameridrives couplings is a pioneering global leader in the design and manufacture of highlyengineered industrial couplings. The following table lists values for coupling diameters of 10 inches. Service manuals mill spindles diaphragm couplings gear. This instruction manual was accurate at the time of printing. Gear couplings nyflex and mite installation guide lovejoy. Competitive gear couplings incorporate an oring seal. Lovejoy sierbath gear couplings are stocked in a wide assortment of configurations, which include c and f standard hubs and sleeves, mill motor hubs, vertical style, floating shaft, and spacer designs. How to achieve gear coupling reliability machinery lubrication.
A series of hardened steel cylindrical barrels are inserted in the holes formed by this hub and. Mtx, mtgx, mtcl, mtb, it is necessary to lubricate each half coupling separately. Be sure the key is a snug side fit in the shaft and coupling keyway with clearance on top. For types g32 and g52, steps 1 through 5 apply when the flex hubs are mounted on the shaft extensions of the connected equipment.
Maina gear couplings introduction the fullflex gear couplings are employed to mechanically connect two rotating shafts which have to transmit a torque in a torsionally rigid way. Nord gear supplies a coupling that is to be mounted onto the motor shaft. Bibby turboflex disc coupling, industrial couplings. The type g large gear coupling is available in all types for capacities up to 72,450,000 lbin, 8,185,000 nm. Alignment procedure is given separately for each type of alignment, for simplicity. By eliminating tiploading while reducing backlash and radial clearances, lifeligns triplecrown teeth. It consists of a flexible joint fixed to each shaft. Maina is a highquality manufacturer of gear coupling products that provide very long service life.
Lubricating oil is unnecessary because the formflex coupling has no sliding, frictional, or moving parts. Ggt gear couplings are generally supplied assembled complete gear coupling or half gear. Nord gearbox inputs installation and maintenance instructions. The torque a gear coupling can transmit as well as its maximum operating speed change according to the total misalignment between the shafts to be connected see diagrams of speed factor kv and of load factor ki, shown on pages 02, 03, 04 and 05. Spacer couplings use a standard double engagement coupling with a spacer. When fitting gear reducer and machine andor gear reducer and.
The gear couplings must be selected according to the. Constructionally the gear coupling utilizes the advantages of gear engineering. Gear coupling selection procedure table 1 torque and horsepower ratings standard selection method the standard selection method can be used for most motor. To help you improve rotating equipment performance, we have an extensive range of products and support services. Fasts gear couplings shrouded bolts exposed bolts the fasts coupling the fasts gear coupling is available in two basic product lines. Proper maintenance of gear couplings is key to avoid early wear of the gear teeth and extend the coupling s life. Falk lifelign gear couplings triplecrowned teeth are crowned on the root, tip and face to articulate freely and minimize wear caused by misalignment.
Construction, installation and maintenance of flexible. We offer special maina couplings and spindles custom machined per order. For example, a machine running at 1800 rpm has a coupling diameter of 3 inches. Tapers and mill motor bores two types of taper bores are also common on gear couplings. In case of use in potentially explosive atmospheres the. How to install a rexnord lifelign gear coupling youtube.
High misalignment for sizes 50 to 280 misalignment of 1 by meshing for sizes 310 up to 800 working temperature 24 sizes of entire steel coupling from 1 200 to 4 500 000 nm. The dodge coupling product line can offer a solution to almost any customer need. The dodge dflex coupling is very popular in pumping applications due to the fivepiece spacer designs ease of installation and change out. Mount the gear reducer or gearmotor so as not to receive vibrations. A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear.
Falk lifelign type g, sizes 10101070 gear couplings rexnord. Slide the sleeve onto its respective hub, making sure that the gear teeth mesh properly. The mt gear coupling must be filled with grease periodically. In this case the above instructions should be replaced by the proper tightening technique for the specific product installed on the gear. Heavy duty all metal couplings giving maximum power. From standard, offtheshelf stock to new, high speed, special designslovejoy can satisfy your gear coupling needs. Dec 14, 2015 this video shows you stepbystep instructions to easily install a rexnord lifelign gear coupling. Taperlock and qd bushing installation and removal taperlock and qd bushing installation is critical to good belt drive performance.
The jaure mt gear coupling is a steel doublejointed coupling that accommodates the misalignment through sliding of the mating gears. When external loads are present use pins or locking blocks, if necessary. Step 2 place one 1 snap ring and one 1 seal on each shaft. By eliminating tiploading while reducing backlash and radial clearances, lifeligns triplecrown teeth can help protect equipment from damaging loads. The unpainted surfaces are treated with suitable corrosion inhibitors. When gear couplings are mounted on a horizontal floating shaft, use a gap disc in each coupling.
F gear coupling sizes 1 9 installation guide lovejoy. Installation instructions for intereference fits pdf. Let us now look into the constructional aspects of the coupling. The tcbr barrel coupling consists of a sleeve and a hub having the same tooth profiles. Gear flex coupling installation procedure the performance and the life of the gear coupling depend on how you install. In this application the device is called a gear type flexible, or flexible coupling. For a more general, non gear coupling specific discussion on interference versus interference fit bores, please see clearance vs interference fit couplings which hub fit is better.
Refer to the installation and alignment instructions for alignment recommendations. Gear type coupling one of the most common types of couplings used for transmission of power above 100 hp is the gear coupling. Sx disc coupling installation instructions 4 bolt design installation instructions pdf sx disc coupling installation instructions 6 bolt design. It is necessary to strictly follow the installation and maintenance instructions. Gear torqueing procedure pdf installation instructions for intereference fits. Bore hub capacity up to 800 mm optimization by finite elements. Types g20, gv20 type g large gear coupling spacer couplings for pump and compressor applications simplify servicing connected equipment. Flexible gear coupling installation and maintenance. Upon reassembly after inspection always refer to the installation section for proper installation and bolt torque. Therefore, there is no friction or noise, and energy loss is low, with no dirty oil to cope with. Single joint gear couplings are used to connect two nominally coaxial shafts. If you have questions or need more information, please v. Construction, installation and maintenance of flexible couplings. Falk double engagement gear couplings installation and.
The crowning of the teeth allows the coupling to withstand parallel misalignment upto a maximum of 10. Dodge has manufactured couplings for over 100 years, earning a reputation for developing innovative products that lower customers total cost of ownership. Page 1 of 5 f gear coupling sizes 1 9 installation guide installed by the user. Roto gear curved tooth couplings are suitable for any conceivable mechanical power transmission drives in all industries, large medium small. Dodge dflex type s coupling dodge dflex type sc spacer coupling. The single joint allows for minor misalignments such as installation errors and changes in shaft alignment due to operating conditions. Make sure that the machine is locked out and cannot be accidentally started during installation or maintenance of the coupling. Unsurprising ly, selecting the best coupling for a particular. Ease of installation, and withstands misalignment, shock, and vibration. We manufacture millions of standard products every year while developing tailormade components for you as well. Fasts gear coupling size 1 12 7 what tooth form is used. Lovejoy offers a variety of designs and models in its gear coupling family.
Nylicon coupling installation of nylicon gear type flexible couplings errors of alignment fall into categories of angularity and eccentricity, or a combination of both. Installation and maintenance instructions falk steelflex. As shown in above figure, gear type couplings consist of two hubs with external teeth that engage internal teeth on a one or twopiece sleeve. Gear couplings belong to the category of flexible couplings that are capable of transmitting very high torques. Sx disc coupling installation instructions 4 bolt design. Gear coupling selection procedure table 1 torque and horsepower ratings standard selection method the standard selection method can be used for most motor, turbine, or engine driven applications. At this diameter the maximum allowable gap would be. Do not use any component that is not supplied or approved by bibby transmissions in the assembly of this product.
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