Though one may not think of gears to be flexible, gear couplings are extremely much regarded as a versatile coupling. A equipment coupling can be a mechanical device made to transmit torque between two shafts that aren’t collinear. The coupling typically consists of two versatile joints, one fixed to each shaft. These joints are often connected by a third shaft called the spindle.
Each joint generally contains a 1:1 equipment ratio internal/external gear pair. The tooth flanks and outer diameter of the exterior equipment are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equal to rotating splines with modified profiles. They are called gears due to the relatively large size of the 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 gear couplings consist of brief sleeves encircled by a perpendicular flange. One sleeve is positioned on each shaft so the two flanges fall into line face to encounter. A number of screws or bolts in the flanges keep them together. Continuous sleeve equipment couplings feature shaft ends coupled together 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 application the device is named a gear-type flexible, or flexible coupling. The single joint allows for minor misalignments such as for example installation errors and adjustments in shaft alignment due to 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 styles – completely flexible and flexible/rigid. A completely versatile coupling comprises two hubs with an exterior gear and two external sleeves with an internal gear. It’s a universal coupling for all sorts of applications and accommodates all possible misalignments (angular, offset and mixed) in addition to large axial moments. Devices, bearings, seals, and shafts are therefore not subjected to the additional forces, sometimes of considerable magnitude, which occur from unavoidable misalignment usually associated with rigid shaft couplings.
A flexible/rigid coupling comprises one flexible geared half and one rigid half. It does not support parallel displacement of shafts but does 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 allows to accommodate up to at least one 1,5° static angular misalignment per gear mesh. However, reducing the operational misalignment will maximize the life of the coupling as well as the life of additional machinery components such as bearings etc.

SERIES H Features & Benefits

Higher Misalignment Capability
Sizes 1-7 compensate for ±1 1/2° static angular misalignment per equipment mesh.
Minimizing working misalignment will maximize the life span of the coupling. Refer to the Installation and Alignment Guidelines 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 additional couplings.
Versatility for the reason that Series H’s are interchangeable by fifty percent 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 are a 20° full-depth involute tooth form with flank, suggestion, and root curvature. When
used in combination with the straight faced sleeve teeth, these 1 1/2° curved encounter hubs offer elevated 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-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 bigger couplings are only obtainable with uncovered bolt flanges.

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

Ever-power COUPLING Features & Benefits

The Ever-power equipment coupling comes in two basic product lines:

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.