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Topic: Gear coupling

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	Guardian Industries - The Guardian Product Line
		Gear Grip couplings handle the shock, cycling loads and vibration that produce extreme wear in other style couplings.
		When the coupling fails, only the sleeve is replaced.
		Ideally, drive shaft should be aligned to minimize bearing load, vibration and wear on the coupling and bearings.
	www.guardiancouplings.com /productline/geargrip.htm (419 words)

	Gear coupling - Wikipedia, the free encyclopedia
		A gear coupling is a mechanical device for transmitting torque between two shafts that are not coaxial.
		Gear couplings and universal joints are used in similar applications.
		Gear couplings have higher torque densities than universal joints designed for the same physical envelope while universal joints induce lower vibrations.
	en.wikipedia.org /wiki/Gear_coupling (246 words)

	Patent 4304501: Disconnect gear coupling
		A disconnect gear coupling as an internally toothed sleeve which connects external teeth formed on a pair of hubs adapted to be mounted on driving and driven shafts.
		In their simplest form, the couplings include a pair of hubs, one of which is attached to each of the shafts, with each of the hubs having a series of external gear teeth, usually crowned.
		The disconnect coupling in accordance with this invention includes a pair of hub members 10 and 11 which are adapted to be mounted upon and keyed to the ends of respective driving and driven shafts 12 and 13.
	www.freepatentsonline.com /4304501.html (1521 words)

	Patent 4047395: Torsionally resilient gear coupling
		The gear coupling of claim 1 wherein the annular gear is in radially wedged restraint between the sleeve member and the externally toothed gears.
		The gear coupling of claim 1 wherein the teeth of the externally toothed gears are axially acruate in form.
		Annular gear 30 thus is in elastically wedged restraint between the externally toothed gears and the inner periphery of the sleeve member, the essential function of the sleeve member being to support the radial separating component of the tangential drive gear tooth pressures exerted on the internal teeth of the resilient annular gear.
	www.freepatentsonline.com /4047395.html (1252 words)

	Retrofitting FAQs
		The sliding force exerted by a gear coupling is a function of torque.
		The force dry couplings exert on equipment bearings is roughly 40% of the gear in bending and 10% axially.
		Coupling designers can generally select and “fine tune” a dry coupling to match the engineering data of the existing gear coupling so the machine train rotor dynamics do not change.
	www.emerson-ept.com /EPTRoot/kopflex/Engineered/FAQ/retro.htm (1278 words)

	Coupling Design and Selection FAQ
		Disc couplings are also lighter in weight and impose lower forces on the connected equipment for the same given torque due the multiplicity of the design.
		These type couplings are designed to last forever - the API 671 requirement is 5 years - as long as their operating torque and misalignment capacities are not exceeded.
		In other words, a coupling that is too heavy or hangs off the end of a sensitive compressor or pump rotor shaft can move the lateral critical speed of the train into the operating speed range.
	www.emerson-ept.com /eptroot/kopflex/Engineered/FAQ/design.htm (2223 words)

	Choosing flexible shaft couplings for long-term reliability
		The primary reason for using flexible couplings in a drive train is to accommodate the relative movement of the drive train components.
		The most rugged of the displacement-type couplings, is the gear coupling with matching male and female gears in a continuous concentric mesh.
		However, gear couplings have the advantage of being relatively small in diameter, lighter in weight and easier to dismantle than some of the other types of coupling.
	www.tribology.co.uk /publish/p006.htm (1216 words)

	Railway Technology - Flender - Gear Units, Gear Couplings and Drive Systems (Site not responding. Last check: 2007-10-16)
		Gear couplings - between motor and gear unit - and articulated join couplings - between gear unit and axle - round off the complete solutions available from one source of supply.
		Longitudinal drive (with gear unit mounted on the axle) the motor serves as the drive and is fastened either to the bogie or the superstructure; the torque is transmitted by a universal joint shaft or spiral teeth coupling that complements the rocking motion resulting from the primary suspension
		This double-jointed gear coupling compensates for angular, parallel and axial shaft misalignments, and is suitable for high speeds.
	www.railway-technology.com /contractors/electromech/flender/index.html (622 words)

	Shaft Couplings – Flexible Shaft Couplings, Universal Joints, Shaft Couplings, Flexible Couplings, Gear Couplings (Site not responding. Last check: 2007-10-16)
		Correct flexible coupling requires careful analysis of the industrial application and environment in which the coupling will be used, and the performance of individual couplings.
		Elastomeric couplings possess many advantages, including a high damping ability, high shock absorption, a high degree of misalignment accommodation, and do not require lubrication; however, elastomeric couplings are larger than metallic couplings, and possess sensitivity to ultraviolet light, chemicals and high temperatures.
		Gear couplings offer efficient torque transmission in a compact mechanism, and permit a high degree of axial movement.
	www.iqsdirectory.com /shaft-couplings (1758 words)

	gear coupling - Web Links
		Gear Shaft Couplings Click image to download pdf technical catalogue of Gear Shaft Couplings We supply TB Wood's Gear couplings which are dependable and provide efficient operation in high torque applications.
		Gears, couplings and specialist gearboxes designed and manufactured by DePe Gears Company UK operate in all the major industrial economies of the world.
		Gear Couplings These are much easier to assemble compared to the conventional chain couplings and are suitable for dynamic testing equipments.
	www.product-launch.co.uk /search.php?ass=1237&qry=gear+coupling (814 words)

	Coupling allows direct gear drive on conveyors: News from Lovejoy Tool Company (Site not responding. Last check: 2007-10-16)
		Designed for high horsepower belt conveyors, a coupling allows the gear drive to be mounted directly to the conveyor, eliminating a foundation and a conventional low-speed shaft coupling.
		I n another unique design move, the Lovejoy/Sier-Bath gear coupling provides a belt-and-suspenders provision in the form of a keeper plate, that is bolted on to the end of the shaft in the event the interference fit fails.
		The Lovejoy/Sier-Bath gear coupling is just one of many engineered solutions for industrial maintenance and performance provided by Lovejoy, an emerging leader in the global power transmission market.
	www.manufacturingtalk.com /news/lov/lov109.html (651 words)

	..: Distributed Energy \| News :..
		Gear couplings are difficult to assess for wear and for inspection and replacement of the gear coupling still required removing the motors.
		Gear couplings would still have to be disassembled, inspected, cleaned and re-greased every time.
		Unlike gear couplings, the Lovejoy SX disc coupling design is inherently balanced– less vibration than gear as it wears, and performs limited end float function without special design considerations for the sleeve bearings.
	www.forester.net /de_news_080606_lovejoy.html (1074 words)

	Pulp & Paper: Coupling selection should be based on application-specific information
		However, the gear coupling in the example is four times as stiff as the disc coupling that has a 7-in.-long spacer spool.
		Gear couplings have a small amount of clearance in the mesh between the hub teeth and the sleeve teeth (Figure 1).
		The four coupling selections for the suction couch roll have similar capacities, but what should be considered is the amount of force required to cause the axial movement itself.
	www.findarticles.com /p/articles/mi_qa3636/is_199407/ai_n8728164 (1427 words)

	Lovejoy Sier-Bath FARR Gear Coupling (Site not responding. Last check: 2007-10-16)
		The Lovejoy®/Sier-Bath® FARR gear coupling is designed specifically for the rugged requirements of high horsepower underground and surface belt conveyors, sometimes referred to as "alignment-free," which allows the gear drive to be mounted directly to the conveyor, eliminating the need for a foundation and a conventional low-speed shaft coupling.
		In another unique design move, the Lovejoy®/Sier-Bath® gear coupling provides a belt-and-suspenders provision in the form of a keeper plate, that is bolted on to the end of the shaft in the event the interference fit fails.
		The Lovejoy®/Sier-Bath® gear coupling is just one of many engineered solutions for industrial maintenance and performance provided by Lovejoy, Inc., an emerging leader in the global power transmission market.
	www.lovejoy-inc.com /Press%20Release%20-%20Flexible%20Gear%20Couplings%20FARR%20Lovejoy%20Sier-Bath.htm (637 words)

	Gear Couplings,Flexible Coupling,Rigid Coupling,Flexible Gear Couplings,Gear Couplings Manufacturer
		A gear coupling is a power transmission coupling which uses a hub with gear teeth on the outside diameter of the input shaft.
		A coupling comprises a clutch having an input connection to the power take off and an output for connection to power transmission input of the trailer unit.
		The tension in the coupling when it connects the tractor and trailer units is monitored, and the slippage of the clutch is controlled in response to the monitored tension.
	gears-manufacturers.com /gear-couplings.html (426 words)

	Gear Coupling Reactions
		Coupling reactions may bend the shaft over its whole span depending on bearing span, the diameters of the shafts, etc..
		If experience with all sorts of gear couplings torques and misalignment confirms this trend, there is very little hope that radial vibrations caused by these reactions could indicate in which directions the misalignment occurs.
		Increasing the torque causes the gear coupling shear to rise substantially.
	www.ulb.ac.be /polytech/laborulb/gear1.htm (2076 words)

	Gear Couplings,Flexible Coupling,Rigid Coupling,Flexible Gear Couplings,Gear Couplings Manufacturer
		A gear coupling is a power transmission coupling which uses a hub with gear teeth on the outside diameter of the input shaft.
		A coupling comprises a clutch having an input connection to the power take off and an output for connection to power transmission input of the trailer unit.
		The tension in the coupling when it connects the tractor and trailer units is monitored, and the slippage of the clutch is controlled in response to the monitored tension.
	www.gears-manufacturers.com /gear-couplings.html (426 words)

	Coupling Selection (Site not responding. Last check: 2007-10-16)
		Primary factors that will affect the type and size of coupling used for an application include, but are not limited to: horsepower, torque, speed (RPM), shaft sizes, environment conditions, type of prime mover, load characteristics of the driven equipment, space limitations and maintenance and installation requirements.
		Couplings in this category include all designs that use a non-metallic element within the coupling, through which the power is transmitted.
		Their flexibility is gained through either loose fitting parts which roll or slide against one another (gear, grid, chain) -sometimes referred to as "mechanical flexing"-- or through flexing/bending of a membrane (disc, flex links diaphragm, beam, bellows).
	www.powertransmission.com /feature/coupling2.htm (1151 words)

	WOOCHANG COUPLING
		Gear Coupling takes the method of coupling by linking sleeve and Hub With shaft and our gear coupling adoped AGMA method(U.S.A) in manufacturing of gear which is the most imporant in gear Coupling so that we can maintain high quality in product.
		Gear Coupling permits parallel, angular and end floating misalignments by crown gear form of hub tooth.
		The coupling made of S45C has a good endurance to high speed and peak load and we can use some special materials.
	www.wccoupling.co.kr /en/gear.htm (178 words)

	Achieve a lubrication-free environment: News from Lovejoy
		This torque capability, combined with the coupling zero backlash, is an especially important consideration in the printing industry, for example, when precision matters most.
		Every time a gear coupling fails, once every six months or even once every three, there is no way to remove the hub and sleeve other than to shut the line down and disassemble or move driver or driven equipment.
		Depending on the operation, for example, in a mill, a gear coupling change-out requires the presence of not only the maintenance crew but also the millwright and the mill electrician at a minimum.
	www.processingtalk.com /news/lov/lov110.html (615 words)

	Lovejoy, Inc. - Sier-Bath Gear Couplings (Site not responding. Last check: 2007-10-16)
		Flanged sleeve gear coupling are available with both shrouded and exposed bolts up to size 5½ and exposed bolts only for larger sizes.
		In fact, "C" Gear Couplings are only 60% of the size of a flanged sleeve coupling.
		The standard continuous sleeve coupling design is one of simplicity, which allows inexpensive adaptation to a wide variety of special types.
	www.lovejoy-inc.com /sier-bathgearcouplings.htm (761 words)

	Gear Coupling Manufacturer,Crowned Gear Coupling,Gear Coupling Exporter,Crowned Gear Coupling Exporter,Gear Coupling ...
		We carry a full line of standard gear couplings that conforms to the AGMA gear coupling specification number.
		The gear box is installed with forced lubrication oil system with all necessary control & monitoring devices for Pressure & Temperature thereby providing necessary amount of oil to various gear and bearings thereby resulting into smooth and trouble free operation.
		Our reduction gear boxes are exported extensively to the world-market because of their higher functional stability.
	www.indiamart.com /mukeshheavyindustries/gear-coupling.html (718 words)

	Akron Gear
		Nylicon couplings are easy to assemble and require no maintenance giving low cost reliable service under the most arduous conditions of weather, atmospheric pollution or humidity.
		Medium duty couplings (types 612 and 614) are identical to heavy duty couplings (types 611 and 613) except that they are supplied with only half the standard number of pin and ring assemblies.
		Flexible Cone Ring couplings are also available with taper bushes (types 613 and 614) with bore sizes up to 125mm or 5in diameter, providing ease of assembly and dismantling together with flexibility to change shaft sizes by changing only the taper bushes.
	www.akrongear.com /seriesx.htm (833 words)

	Couplings Kop-Flex Couplings Browning Couplings Morse Couplings
		It was invented in 1918 by Gustav Fasts, and is still the coupling of choice in many for the world’s most coupling of choice in many for the world’s most demanding applications.
		Traditionally the gear coupling of choice in paper mills with its unique H” type seal design for multiple contact area; capable of better sealing than conventional O’Ring style seal.
		couplings are used where considerable misalignment may occur; couplings are torsionally flexible while compensating for misalignment.
	www.emerson-ept.com /EPTroot/Public/prod/BrgMseCoupl/BrgMseCoupl.htm (859 words)

	Untitled Document (Site not responding. Last check: 2007-10-16)
		The hubs are generally pressed or shrunk fit on the shaft ends since the gear coupling has the ability to transmit high torque in a relatively small package size.
		Unlike competitive gear couplings, which use paper gaskets that could become dry or damaged over time, sealing compound is included with every DODGE Gear Coupling unit, and is located between the press surfaces.
		Gear couplings are commonly used on applications such as rolling mills, pumps, compressors, blowers, agitators, cranes, excavators, dredgers, paper making machinery, generators, winders, kneaders, etc.
	www.dodge-pt.com /news/press_releases/press_15.html (371 words)

	NDE - Products – High Power Flexible Gear Couplings
		This gear coupling has a very compact design and is designed for maximum torque transmission in the smallest space margins, which is important for some applications.
		The stainless steel gear couplings can be used in hostile environments such as highly corrosive atmospheres where acid or seawater may be used.
		This gives the couplings the long term reliability and service life that all NDE Pitchline gear couplings are designed to achieve.
	www.ndepower.com /prodgearcoup.html (584 words)

	VFD's and Bearing Damage - Reliability Magazine® Message Boards
		The grease specified by the OEM was not suitable for gear couplings.
		The current team investigating the problem determined the grease was not well suited for gear couplings and the supply in the lube cabinet was well past the usable shelf life.
		The service lifespan difference between gear teeth at HRC 45 and another identical set at HRC 35, can easily be ten times the life or more, as the surface hardness of contacting gears, in both couplings and gearboxes, is the most critical fatigue life factor after tooth form.
	www.vtab.se /PHP-NBoard/html/images/materiali/Forum2/HTML/000198.html (2545 words)

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