GUMMI AN 11A pneumatic coupling

GUMMI AN 11A belongs to pneumatic coupling, part of our Power transmission range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for AN 11A and any equivalents.

A pneumatic coupling from the Gummi AN Line links two shafts while smoothing out torque variations. Its design places a rubber chamber under air pressure between two steel rings; changing that pressure changes how stiff the coupling behaves. It suits combustion engines, compressors, reciprocating pumps and mills, where torque does not stay constant.

The code for this line starts with the letters AN, then a size number, and ends with the letter A. Examples include AN 11A, AN 13A and AN 15A. That sequence tells you where a model sits in the range. Because the rubber chamber is pressurized, the air setting controls both the stiffness and how much torque variation the coupling can absorb. This makes the assembly a good fit for uneven loads, which are common in reciprocating engines and other equipment with cyclic motion.

In industrial plants across the region, you will find this coupling on combustion engines, compressors, reciprocating pumps and mills. In all of them, input torque rises and falls, and those pulses need to be softened to protect the driven machine and the rest of the drivetrain. Heavy starts or pulsating loads are another typical case: a rigid coupling would pass every torque shock straight to the shafts and bearings.

When selecting a model, look at the application torque and service factor, the shaft diameters to be joined, the operating speed and the alignment between shafts. Since air pressure sets the stiffness, define that setting according to the load. During installation, align the shafts and inspect the rubber chamber. For maintenance, keep an eye on the pressure and check the chamber for wear.

To request a quote, provide the model or part number, such as AN 11A or AN 13A, along with the diameter of both shafts, the power and rpm of the motor, and the same data for the driven machine. With that information, MR can help you choose the AN Line model that fits your equipment. If you already know the part number, send it by WhatsApp or email and the team will respond promptly, suggest equivalents and assist with selection.