Gear Coupling

Though one might not think of gears as being versatile, gear couplings are extremely much regarded as a versatile coupling. A equipment coupling can be a mechanical device designed to transmit torque between two shafts that aren’t collinear. The coupling typically contains two versatile joints, one set to each shaft. These joints tend to be linked by a third shaft known as the spindle.
Each joint generally consists of a 1:1 equipment ratio internal/external equipment pair. The tooth flanks and outer diameter of the exterior gear are crowned to allow for angular displacement between your two gears. Mechanically, the gears are equivalent to rotating splines with altered profiles. They are called gears because of the relatively huge size of one’s teeth. Gear couplings are usually limited by angular misalignments of 4 to 5°.
Gear couplings ordinarily can be found in two variations, flanged sleeve and continuous sleeve. Flanged equipment couplings consist of short sleeves encircled by a perpendicular flange. One sleeve is placed on each shaft so the two flanges line up face to face. A series of screws or bolts in the flanges keep them together. Continuous sleeve gear couplings feature shaft ends coupled collectively and abutted against one another, which are then enveloped by a sleeve. Generally, these sleeves are made of metal, but they can also be made of Nylon.
Single joint equipment couplings are used to connect two nominally coaxial shafts. In this software the device is called a gear-type flexible, or versatile coupling. The one joint allows for minimal misalignments such as for example installation errors and changes in shaft alignment because of operating conditions. These kinds of gear couplings are usually limited to angular misalignments of 1/4 to 1/2°.

Gear couplings are torsionally rigid and so are supplied to two designs – completely flexible and flexible/rigid. A completely flexible coupling comprises two hubs with an external gear and two outer sleeves with an interior gear. It’s a universal coupling for a variety of applications and accommodates all possible misalignments (angular, offset and combined) in addition to large axial moments. Devices, bearings, seals, and shafts are therefore not subjected to the additional forces, sometimes of considerable magnitude, which arise from unavoidable misalignment usually connected with rigid shaft couplings.
A flexible/rigid coupling comprises one flexible geared fifty percent and one rigid half. It does not accommodate parallel displacement of shafts but does accommodate angular misalignment. This type of couplings are primarily used for “floating shaft” applications.
Sizes 010 – 070 all have crowned tooth with a 20° pressure contact. This allows to accommodate up to 1 1,5° static angular misalignment per equipment mesh. However, reducing the operational misalignment will increase the life of the coupling as well as the life of other machinery components such as bearings etc.

SERIES H Features & Benefits

Higher Misalignment Capability
Sizes 1-7 compensate for up to ±1 1/2° static angular misalignment per gear mesh.
Minimizing working misalignment will increase the life span of the coupling. Refer to the Installation and Alignment Guidelines for alignment recommendations.
Larger Bore Capabilities permit the most economical size selection for shafts up to 10 5/8″.
Higher Torque Ratings due to larger tooth pitch diameters than various other couplings.
Versatility in that Series H’s are interchangeable by fifty percent coupling with competitive coupling designs.
1 1/2° Curved-Face Teeth are a prime feature of the Series H coupling, sizes 1-7. The crowned hub teeth are a 20° full-depth involute tooth form with flank, tip, and root curvature. When
used with the straight faced sleeve teeth, these 1 1/2° curved encounter hubs offer increased shaft misalignment capability
CENTER FLANGE BOLTING
All couplings feature precision-drilled flange bolt holes, and tight tolerance Grade 5 flange bolts to assure a long-lasting flange to flange and fastener fit. Exposed bolt flanges are
standard. Shrouded bolt flanges can be provided through size 5. Size #5 1/2 and larger couplings are only obtainable with uncovered bolt flanges.

LUBRICATION
Each sleeve flange is supplied with two pipe plugs 180° apart. This permits assembly of a complete flex coupling with four lube plugs positioned every 90°, facilitating lubrication. The lube seal is definitely a Buna-N O-ring to help retain grease and exclude contaminants. KHP or KSG coupling greases are suggested to be able to obtain maximum operating life.

Ever-power COUPLING Features & Benefits

The Ever-power gear coupling is available in two basic product lines:

Ever-powercoupling for moderate to heavy-duty applications
Sizes 1 1/2 through 7 with essential end ring.
Sizes 8 through 30 with bolt-on end ring.