Gear Coupling

Though one may not think of gears as being versatile, gear couplings are extremely much considered to be a versatile coupling. A gear coupling can be a mechanical device designed to transmit torque between two shafts that are not collinear. The coupling typically contains two flexible joints, one set to each shaft. These joints tend to be linked by a third shaft known as the spindle.
Each joint generally contains a 1:1 equipment ratio internal/external equipment set. The tooth flanks and external diameter of the external gear are crowned to permit for angular displacement between your two gears. Mechanically, the gears are equal to rotating splines with modified profiles. They are known as gears because of the relatively large size of the teeth. Gear couplings are usually limited by angular misalignments of 4 to 5°.
Gear couplings ordinarily come in two variations, flanged sleeve and continuous sleeve. Flanged gear couplings consist of short sleeves encircled by a perpendicular flange. One sleeve is positioned on each shaft therefore the two flanges fall into line face to encounter. A series of screws or bolts in the flanges keep them jointly. Continuous sleeve gear couplings feature shaft ends coupled collectively and abutted against one another, which are after that enveloped by a sleeve. Generally, these sleeves are made from metal, but they may 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 solitary joint allows for minimal misalignments such as for example installation errors and adjustments in shaft alignment because of operating conditions. These types of gear couplings are usually limited by angular misalignments of 1/4 to 1/2°.

Gear couplings are torsionally rigid and are supplied to two designs – completely flexible and flexible/rigid. A totally versatile coupling comprises two hubs with an exterior gear and two outer sleeves with an interior gear. It’s a common coupling for a variety of applications and accommodates all possible misalignments (angular, offset and mixed) along with large axial moments. Devices, bearings, seals, and shafts are therefore not put through the additional forces, sometimes of significant magnitude, which arise from unavoidable misalignment usually connected with rigid shaft couplings.
A flexible/rigid coupling comprises one flexible geared half and one rigid half. It does not accommodate parallel displacement of shafts but will accommodate angular misalignment. This type of couplings are primarily utilized for “floating shaft” applications.
Sizes 010 – 070 all have crowned teeth with a 20° pressure contact. This enables to accommodate up to 1 1,5° static angular misalignment per gear mesh. However, reducing the operational misalignment will increase the life of the coupling along with the life of various other machinery components such as for example bearings etc.

SERIES H Features & Benefits

Higher Misalignment Capability
Sizes 1-7 compensate for up to ±1 1/2° static angular misalignment per equipment mesh.
Minimizing operating misalignment will increase the life span of the coupling. Make reference to the Installation and Alignment Instructions for alignment recommendations.
Larger Bore Capabilities allow the most economical size selection for shafts up to 10 5/8″.
Higher Torque Ratings due to bigger tooth pitch diameters than various other couplings.
Versatility for the reason that Series H’s are interchangeable by half coupling with competitive coupling designs.
1 1/2° Curved-Face Teeth are a primary 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 in combination with the straight faced sleeve teeth, these 1 1/2° curved face hubs offer increased shaft misalignment capability
CENTER FLANGE BOLTING
All couplings feature precision-drilled flange bolt holes, and tight tolerance Quality 5 flange bolts to assure a long-long lasting flange to flange and fastener fit. Exposed bolt flanges are
regular. Shrouded bolt flanges can be provided through size 5. Size #5 1/2 and larger couplings are only available with exposed bolt flanges.

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

Ever-power COUPLING Features & Benefits

The Ever-power equipment coupling comes in two basic products:

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