Flexible coupling GUMMI A-70 with integral hub

GUMMI A-70 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-70 CI and any equivalents.

The GUMMI A-70 CI is a flexible coupling used to connect two shafts while compensating for misalignment and damping vibration and torque spikes. Its integral hub design, indicated by the CI suffix, suits larger shafts up to a 90 mm bore. This coupling is common in equipment that runs continuously and where protecting bearings and gears downstream matters.

This coupling belongs to the GUMMI Type A family and is identified as model A-70 with an integral hub. In the CI version, the hub and the elastic element are one piece, which cuts down on parts and makes installation simpler. The A-70 CI accepts a maximum bore of 90 mm, so it fits larger shafts within that series. If you need to confirm your shaft diameter, our technical team can help.

Typical uses include centrifugal pumps, fans, screw compressors, conveyor belts and machine tools. In these setups, the coupling transfers torque from the motor to the driven equipment and handles small angular, radial and axial misalignments. It also reduces torsional vibration, which helps bearings last longer and lowers noise. You will often find it in installations where ruggedness and easy maintenance are important.

When choosing a flexible coupling, look at the drive's nominal and maximum torque, the speed, the shaft sizes and the load characteristics. The A-70 CI tops out at a 90 mm bore, so if your shaft is larger, consider a model with more capacity. During installation, check alignment with a straightedge or dial indicator, follow the specified screw torque and make sure the elastic element is not compressed. Good alignment avoids early failures.

If you are looking for an equivalent, send us the code or model on WhatsApp. We can point you to another Type A configuration, such as split hub or taper hub, or to a larger bore model. We can also help you pick the right elastic element for your application. Our team reviews every request and responds promptly.

MR Industrial Accessories supplies GUMMI flexible couplings and other power transmission parts. To get a quote for the A-70 CI or ask about a variant, send the code on WhatsApp and we will get back to you quickly. You can also contact us for help identifying a part from a photo or your shaft dimensions.