Though one may not think of gears to be flexible, gear couplings are very much considered to be a flexible coupling. A gear coupling is definitely a mechanical device designed to transmit torque between two shafts that aren’t collinear. The coupling typically includes two versatile joints, one set to each shaft. These joints tend to be linked by a third shaft called the spindle.
Each joint generally consists of a 1:1 equipment ratio internal/external equipment set. The tooth flanks and outer diameter of the exterior equipment are crowned to permit for angular displacement between the two gears. Mechanically, the gears are equal to rotating splines with altered profiles. They are called gears due to the relatively huge size of the teeth. Gear couplings are generally limited to angular misalignments of 4 to 5°.
Gear couplings ordinarily can be found in two variations, flanged sleeve and continuous sleeve. Flanged gear couplings consist of short sleeves surrounded by a perpendicular flange. One sleeve is positioned on each shaft so the two flanges line up face to face. A series of screws or bolts in the flanges hold them together. Continuous sleeve equipment 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 can also be made of Nylon.
Single joint equipment couplings are accustomed to connect two nominally coaxial shafts. In this software the device is named a gear-type versatile, or versatile coupling. The solitary joint allows for minor misalignments such as installation errors and adjustments in shaft alignment because of operating conditions. These types of gear couplings are generally limited to angular misalignments of 1/4 to 1/2°.

Gear couplings are torsionally rigid and are supplied to two styles – completely flexible and flexible/rigid. A completely flexible coupling comprises two hubs with an external gear and two external sleeves with an interior gear. It’s a general coupling for a variety of applications and accommodates all possible misalignments (angular, offset and combined) and also large axial moments. Devices, bearings, seals, and shafts are therefore not put through the excess forces, sometimes of considerable magnitude, which occur 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 support parallel displacement of shafts but will support 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 at least one 1,5° static angular misalignment per gear mesh. However, reducing the operational misalignment will maximize the life span of the coupling as well as the life of additional 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 gear mesh.
Minimizing working misalignment will maximize the life span of the coupling. Make reference 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 bigger tooth pitch diameters than other couplings.
Versatility in that Series H’s are interchangeable by half coupling with competitive coupling styles.
1 1/2° Curved-Face Teeth are a primary feature of the Series H coupling, sizes 1-7. The crowned hub teeth certainly 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 make sure a long-enduring 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 is supplied 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 definitely a Buna-N O-ring to greatly help retain grease and exclude contaminants. KHP or KSG coupling greases are suggested in order to obtain maximum operating life.

Ever-power COUPLING Features & Benefits

The Ever-power gear coupling comes 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 band.