What is the purpose of spigot and recess in rigid flange coupling?
A spigot and recess is provided in the flanges to provide location between them. The flanges are connected firmly by means of fitted bolts which are tightened accordingly to the torque to be transmitted.
How many types of flange couplings are there?
Types of Flange Coupling Usually, there are 3 types of flange couplings; they can be classified as protected, unprotected, and marine flange coupling.
What is a flange coupling?
noun. engineering a driving coupling between rotating shafts that consists of flanges (or half couplings) one of which is fixed at the end of each shaft, the two flanges being bolted together with a ring of bolts to complete the drive.
What is protected type flange coupling?
Protected type – In this type of coupling bolts and nuts are protected by flanges on the two halves of the coupling, in order to avoid danger to the workman. Marine type – In this type of coupling, flanges are forged integral with the shafts. The flanges are held together by means of tapered headless bolts.
What is the use of Oldham coupling?
Oldham couplings transmit torque by mating the slots on the center disk to the drive tenons on the hubs. They accommodate angular and axial misalignment, and are especially useful in applications where parallel misalignment is present.
What is the advantage of Oldham’s coupling?
Oldham coupling applications: It can accomodate slightest misalignments. The driving shafts and the driven shafts generate at a similar speed. It behaves as an electrical insulator. It can transmit power and torque.
What bolts are used in flange coupling?
High thread count nut and bolt connections are used to secure the flange couplings in place. These nuts and bolts are usually made from tempered steel or alloys to provide enduring strength and the ability to be tightened to the utmost level to ensure the piping system doesn’t leak at any flanged junction.
What is the difference between coupling and flange?
Flanges are fitted or provided at the end of shafts. The flanges are tightened together by means of a number of nuts and bolts. One of these flanges or chutes is fixed at the end of each shaft. During activities and operations, couplings guarantee that there is no interference of shafts.
What is Hub in flange coupling?
The flange consists of two cast iron hubs keyed to the two shafts. The hubs extended into flanges whose faces are brought and held together by a series of bolts, arranged concentrically about the shafts so that their axes are parallel to the shaft axes.
What is meant by Oldham coupling?
Definition of Oldham’s coupling : a coupling for parallel shafts slightly out of line consisting of a disk on the end of each shaft and an intermediate disk having two mutually perpendicular feathers on opposite sides that engage slots in the respective shaft disks.