Octagonal diaphragm

The octagonal diaphragm in mechanical equipment sometimes needs to limit the shaft load to prevent damage to the equipment or industrial accidents due to overload. At this time, the diaphragm coupling should be selected.The function of the diaphragm coupling is to interrupt the transmission or limit the transmission of torque by breaking, separating or slipping of the coupling when the transmitted torque exceeds the limit value, so as to protect the important parts of the transmission system from damage.There are many types of diaphragm couplings. This coupling is suitable for mechanical equipment that starts with load or frequently starts without speed adjustment, such as centrifugal water pumps, blowers, air compressors, belt conveyors, scraper conveyors, mixers , Ball mill, sand cleaning drum, steel pusher, etc.

Connection of octagonal diaphragm and shaft:

When transmitting 175% of the momentary torque specified by the buyer, the coupling will not be broken, but the connection is allowed to fail; when the displacement of the axis of the two shafts connected by the coupling reaches 125% of the rated value, it can operate normally and continuously.For couplings with spacer sleeves, the spacer sleeve should have sufficient length so that the coupling can be assembled and disassembled without moving the shaft.The coupling hub and shaft should adopt an interference fit.The size of the interference can be proposed by the buyer, but the seller's consent is required.

Shaft hole types include cylindrical holes with keys and conical holes; cylindrical holes without keys and conical holes for hydraulic assembly.The type of shaft hole is selected by the buyer.The tolerance level of cylindricity of shaft hole joint surface is 6.When measuring the cylindricity tolerance, it should be done before the keyway machining.Choice of interference between shaft hole and shaft (recommended value): cylindrical shaft hole with key, its interference is 0.5%-0.75% of shaft diameter; conical shaft hole with key, from interference 1% of the shaft diameter; for cylindrical holes without keys, the interference is 1.5%-1.8% of the shaft diameter; for hydraulically assembled conical shaft holes, the interference is 1.8%-2.0% of the shaft diameter.