Though one might not think of gears as being flexible, gear couplings are extremely much regarded as a flexible coupling. A equipment coupling is definitely a mechanical device made to transmit torque between two shafts that aren’t collinear. The coupling typically consists of two flexible joints, one fixed 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 external diameter of the exterior gear are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equivalent to rotating splines with modified profiles. They are called gears because of the relatively huge 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 short sleeves surrounded by a perpendicular flange. One sleeve is placed on each shaft therefore the two flanges fall into line face to encounter. A series of screws or bolts in the flanges hold them together. Continuous sleeve equipment couplings feature shaft ends coupled together and abutted against each other, which are then enveloped by a sleeve. Generally, these sleeves are made from metal, but they can also be made of Nylon.
Single joint gear couplings are used to connect two nominally coaxial shafts. In this program the device is called a gear-type versatile, or versatile coupling. The single joint allows for minimal misalignments such as installation errors and adjustments in shaft alignment due to operating conditions. These kinds of gear couplings are generally limited to angular misalignments of 1/4 to 1/2°.

Gear couplings are torsionally rigid and so are supplied to two styles – completely flexible and flexible/rigid. A completely versatile coupling comprises two hubs with an external gear and two outer sleeves with an interior gear. It’s a common coupling for all sorts of applications and accommodates all feasible misalignments (angular, offset and combined) and also large axial moments. Devices, bearings, seals, and shafts are therefore not put through the additional forces, sometimes of substantial magnitude, which arise from unavoidable misalignment usually associated with rigid shaft couplings.
A flexible/rigid coupling comprises one flexible geared fifty percent and one rigid fifty percent. It does not accommodate parallel displacement of shafts but will support angular misalignment. This kind of couplings are primarily used for “floating shaft” applications.
Sizes 010 – 070 all have crowned teeth with a 20° pressure contact. This allows to accommodate up to 1 1,5° static angular misalignment per equipment mesh. However, minimizing the operational misalignment will increase the life of the coupling and also 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 equipment mesh.
Minimizing operating misalignment will increase the life span of the coupling. Make reference to the Set up 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 because of larger tooth pitch diameters than additional couplings.
Versatility for the reason that Series H’s are interchangeable by half coupling with competitive coupling designs.
1 1/2° Curved-Face Teeth certainly are a prime feature of the Series H coupling, sizes 1-7. The crowned hub teeth certainly are a 20° full-depth involute tooth form with flank, suggestion, and root curvature. When
used in combination with the straight confronted sleeve teeth, these 1 1/2° curved encounter hubs offer improved 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-lasting flange to flange and fastener fit. Exposed bolt flanges are
regular. Shrouded bolt flanges can be supplied through size 5. Size #5 1/2 and larger couplings are only available with uncovered 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 definitely 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 operating life.

Ever-power COUPLING Features & Benefits

The Ever-power equipment coupling is available 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 band.