Though one may not think of gears to be versatile, gear couplings are very much considered to be a versatile coupling. A gear coupling is definitely a mechanical device made to transmit torque between two shafts that are not collinear. The coupling typically contains two flexible joints, one fixed to each shaft. These joints are often connected by a third shaft known as the spindle.
Each joint generally contains a 1:1 equipment ratio internal/external gear set. The tooth flanks and external diameter of the external 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 known as gears because of the relatively huge size of the teeth. Gear couplings are generally 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 placed on each shaft therefore the two flanges fall into line face to face. A series 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 after that enveloped by a sleeve. Generally, these sleeves are made from metal, but they may also be made of Nylon.
Single joint gear couplings are used to connect two nominally coaxial shafts. In this software the device is called a gear-type flexible, or flexible coupling. The solitary joint allows for small 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 so are supplied to two designs – completely flexible and flexible/rigid. A completely versatile coupling comprises two hubs with an exterior gear and two external sleeves with an interior gear. It’s a general coupling for all sorts of applications and accommodates all feasible misalignments (angular, offset and combined) in addition to large axial moments. Machines, bearings, seals, and shafts are therefore not subjected to the additional forces, sometimes of considerable magnitude, which arise from unavoidable misalignment usually associated with rigid shaft couplings.
A flexible/rigid coupling comprises one flexible geared half and one rigid fifty percent. It does not accommodate parallel displacement of shafts but will support angular misalignment. This kind 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 equipment mesh. However, reducing the operational misalignment will maximize 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 ±1 1/2° static angular misalignment per gear mesh.
Minimizing working misalignment will maximize the life 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 because of larger tooth pitch diameters than various other couplings.
Versatility for the reason that Series H’s are interchangeable by half coupling with competitive coupling styles.
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 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 Grade 5 flange bolts to assure a long-long lasting flange to flange and fastener fit. Exposed bolt flanges are
standard. Shrouded bolt flanges could be provided through size 5. Size #5 1/2 and larger couplings are only available with exposed bolt flanges.
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 certainly 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 working 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 band.