Flexible coupling GUMMI A-90 with integral hub

GUMMI A-90 CI belongs to 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 A-90 CI and any equivalents.

The GUMMI A-90 CI is a flexible coupling from the Type A series used to join two shafts while absorbing misalignment, vibration and load peaks. Its integral hub construction suits larger shafts, and the maximum bore is 100 mm. Maintenance teams specify it where continuous duty calls for protecting bearings and gears.

Reading the designation is straightforward: A-90 identifies the size within the Type A line, and CI indicates the integral hub variant. In this configuration the hub is a single piece, which simplifies mounting and stiffens the assembly. With a maximum bore of 100 mm, the coupling fits larger diameter shafts. The elastic intermediate element handles angular and radial misalignment within the limits allowed for this coupling type. Selection is normally driven by shaft diameter and the torque to be transmitted, whether for a replacement or a new project.

You will find this coupling on machines that run continuously: centrifugal pumps, fans, screw compressors, conveyor belts and process equipment. Food, chemical and water treatment plants also use it to cut vibration transfer between the motor and the driven machine. The integral hub helps in tight spaces where separate hubs make alignment harder. In short, it is a flexible transmission option for medium power and large diameter shafts.

When selecting the A-90 CI, review shaft diameter, nominal torque and operating speed. Before tightening the hubs, verify alignment with a straightedge or dial indicator, since excessive misalignment shortens the life of the elastic element. Tighten the fastening screws to the torque recommended by the manufacturer, with the hub clean and free of burrs. In dusty or humid areas, inspect the elastomer periodically and replace it if it shows cracks or hardening.

If you need an equivalent, send the code A-90 CI by WhatsApp or email, or the model shown on the machine nameplate. A photo of the coupling along with the shaft dimensions also helps us guide you. We supply the GUMMI Type A line and can point you to the variant that fits your application, and we serve customers across the United States and in several Latin American countries.