Lovejoy coupling size chart

The goal of this handbook is to assist you with the process of sorting out the myriad of coupling styles that exist to select the one best suited to your application.

Safety Warning When using Lovejoy products, you must follow these instructions and take the following precautions. Failure to do so may cause the power transmission product to break and parts to be thrown with sufficient force to cause severe injury or death. Refer to this Lovejoy Catalog for proper selection, sizing, horsepower, torque range, and speed range of power transmission products, including elastomeric elements for couplings. Follow the installation instructions included with the product, and in the individual product catalogs for proper installation of power transmission These couplings require no lubrication and provide highly reliable service for light, medium, and heavy duty electrical motor and internal combustion power transmission applications. Lovejoy offers four types of elastomer designs to allow for additional flexibility in addressing specific application requirements.

Lovejoy coupling size chart

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Coupling balance is achieved through design, manufacturing and remedial balancing machines. Those with moving parts generally are less expensive, lovejoy coupling size chart, but need to be lubricated and maintained. While the full flex design is the most popular in gear couplings, flex rigid designs are often useful in systems with three bearings or floating shafts.

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Each hub includes a set screw unless noted , which bites into your shaft to hold the coupling in place. A complete coupling consists of two hubs and one spider, or two hubs, one split spider, and one retaining ring all components sold separately. Twist-lock them in place using a retaining ring. Stainless steel hubs have excellent corrosion resistance. Buna - N spiders provide good vibration damping and chemical resistance.

Lovejoy coupling size chart

The goal of this handbook is to assist you with the process of sorting out the myriad of coupling styles that exist to select the one best suited to your application. This handbook is not a textbook. There are several of those in print which do a great job and are very useful for coupling designers. What we are attempting to do is to provide down-to-earth useable knowledge. We want to arm you with information that you need to utilize the variety of styles that exist in flexible couplings to your best advantage and solve real world problems. Lovejoy has been manufacturing couplings since More importantly, we have the greatest breadth of coupling types offered by any single manufacturer in the world.

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Lubrication of High Speed Units. Hystersis, a characteristic exhibited by rubber with binders, allows the elastomeric material to adsorb dynamic energy. They are necessary with sleeve bearing motors, a design commonly found in larger sizes of horsepower or more. They are found on bridge cranes and steel rolling mills. Sometimes the seal holder is bolted to the coupling sleeve. The torsionally soft design of an in-shear elastomer helps to dampen out most peak overloads and prevent vibratory torque from going back to the driver. Jaw Couplings Elastomeric flexible couplings transmit torque between the two shafts by means of an elastomeric material rubber, urethane, etc. Several designs of couplings were developed to solve the problem of damping torsional vibration. High-speed machines are sensitive to overhung weights too. The nylon sleeve has high torsional stiffness and is resistant to chemical attack. The weight of the coupling and any reactionary forces all act at the center of the flex plane and cause a bending moment on the equipment shaft. Greater torsional softness generally produces lower reactionary shaft loads when the coupling is subjected to misalignment. The procedure on flanged sleeve couplings is more complex. When the hubs are brought together, their slots match, and a single serpentine grid of spring steel is wrapped around both flanges so that the spring loops back and forth between the two hubs, nesting in the slots.

Safety Warning When using Lovejoy products, you must follow these instructions and take the following precautions. Failure to do so may cause the power transmission product to break and parts to be thrown with sufficient force to cause severe injury or death.

Most gear couplings are lubricated with grease. Many times the switch to a torsionally stiffer elastomer is to tune the torsional system to a higher natural frequency. Spacers can serve to separate the flex planes and can be part of the torsional tuning of a coupling. For instance, lubricated couplings will require periodic checks of the seals and lubricant. The hub is expanded by hydraulic pressure and pushed up the shaft to a predetermined point. Crowning, or curving the surface of the hub teeth, further enhances this capability. This is a long list of evaluation factors. This is characteristic of couplings in which some portion of both halves operate in the same plane, allowing direct contact between those portions. Donuts can have a square, rectangular, octagonal or other cross-section design. When dealing with power transmission couplings, it is usually measured in inch-pounds per radian Newton Meters per radian in metric. The gear coupling size in most cases will be determined by the nominal shaft size. All couplings have a misalignment limit. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.