The JMIJ/JMJ type diaphragm coupling for shaft coupling accessories features stainless steel diaphragms designed to prevent micromotion wear during high-speed operation, which could lead to tiny cracks in the diaphragm bolt holes and eventual damage. To counter this, a solid lubricant like molybdenum disulfide can be applied between the diaphragms or a wear-reducing coating can be applied to the surface. Typically, the diaphragms are connected to the two halves of the coupling using bolts arranged in an interlocking pattern, with each group of diaphragms consisting of several stacked sheets. These are generally made of stainless steel 304 and, after laser cutting, are assembled with iron rings and riveted together. The bolt holes of the diaphragm couplings are bored in a large-small, opposite arrangement.
The diaphragms are divided into rod-type and solid-shaped diaphragms of various shapes. The stainless steel diaphragm coupling diaphragms compensate for the relative displacement between the two connected shafts through the elastic deformation of the diaphragms, making them a high-performance metal elastic element flexible coupling that requires no lubrication. They feature a compact structure, high strength, long service life, no rotational clearance, and are unaffected by temperature and oil contamination. They also exhibit resistance to acids, alkalis, and corrosion. Key points for using diaphragm coupling diaphragm products: Appropriate protective measures should be taken at all locations where personal and equipment accidents may occur due to the operation of the diaphragm coupling diaphragms. During operation, it is essential to regularly inspect for any abnormal phenomena in the diaphragm coupling, and immediate maintenance should be performed if any are found.
Our factory specializes in manufacturing various coupling accessories, including LA and RF tire couplings, nylon sleeve internal spline, roller chain for couplings, GR-type elastic couplings, T-type梅花 six-point pump counter-rotating pads, stainless steel diaphragm couplings, and other components. We offer a wide range of products with nominal torque ranging from 25 to 6300, allowable speed from 1600 to 6000, shaft bore diameter from 14 to 125, and shaft bore length from 90 to 120. The standard number for JMIJ type diaphragm couplings is JB/T 9147-1999. The outer diameter is 90-340mm.
The stainless steel diaphragm couplings are meticulously crafted, offering reliable quality that meets the high standards of domestic peers. They are widely used in the installation of large equipment such as rolling mills, cranes, forging presses, and oil machinery. Prior to installation, the two shaft ends should be cleaned and the keyway slots checked for fit. After installation, all screws should be inspected after a shift of normal operation. If any looseness is found, they should be tightened. This process should be repeated for several shifts to ensure no further loosening occurs. In practical applications, a set of diaphragm couplings often requires two diaphragms to be installed at the connection points for buffering purposes. Diaphragm couplings typically use an intermediate shaft design to enhance the performance of compensating for axis offset, which is an advantage of this type of coupling, making it a popular choice among users.
