A Flexible Plum Clamp Coupler D30 is a type of mechanical component used to connect two shafts together. It is typically used to connect a stepper motor to a lead screw, ball screw, or other types of linear actuators.

The "D30" in the name refers to the diameter of the coupler, which is 30mm. The 14x14 Nema34 shaft refers to the size of the two shafts that the coupler connects, which have a diameter of 14mm and are Nema 34 standard. Nema 34 is a standard for stepper motors and it's size is 1.4x1.4 inches.

The "Flexible" in the name means the coupler is able to flex or bend slightly, allowing for misalignment between the two shafts. This helps to prevent damage to the shafts or the coupler, and can also help to reduce noise and vibration.

These types of couplers are commonly used in CNC machines, 3D printers, robotics, and other types of precision motion control systems. They are designed to be durable and are able to withstand high torque loads, making them suitable for high-performance applications.

These high-quality plum clamp couplers are designed for a 14mm shaft, such as a Nema34, to be coupled to another 14mm shaft and can handle a lot of strain.

This plum shaft coupler is made of high strength aluminum alloy, excellent bearing capacity, long service life. Widely used in shafting transmission of various mechanical devices, such as pumps, fans, compressors, hydraulic machinery, petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopter), ship high-speed power transmission system, steam turbine, piston power mechanical transmission, etc.