Flexible coupling GUMMI A-20/25 with ES spacer 100

GUMMI A-20/25 ES 100 is a coupling reference, within Power transmission. Request a quote for A-20/25 ES 100 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

The GUMMI A-20/25 ES 100 flexible coupling is a power transmission component that connects shafts and absorbs misalignment, vibration and shock loads. Its configuration with a 100 mm spacer allows the flexible element or the equipment to be removed without moving the machines, which is key in back-pull-out pumps and assemblies where working space is limited. MR Accesorios Industriales supplies this GUMMI line in Buenos Aires, Argentina, with more than 80 years of experience in industrial distribution.

This coupling is identified by model A-20/25 and is supplied with a 100 mm ES spacer. That intermediate piece separates the two hubs enough to remove the flexible element without moving motors or pumps. The designation A-20/25 ES 100 combines the coupling size with the spacer length, a detail that defines the clearance required between shafts. The GUMMI Type A series is a line of general-purpose couplings, with hubs and flexible elements that transmit torque and dampen irregularities.

Typical applications for a coupling with a spacer like this one appear in back-pull-out centrifugal pumps, where the head rotates and is pulled back without touching the piping or the motor. It is also used in compressors, fans, mixers and conveyors that require frequent maintenance of the flexible element. In all those cases, the 100 mm spacer prevents dismantling the entire line: the coupling is released, the element is slid over and replaced. It is a practical solution for equipment that cannot be out of service for long.

To select this coupling properly, take into account the shaft diameters, the nominal and maximum torque of the drive, and the operating speed. The 100 mm spacer sets a distance between shaft ends that must be respected so as not to force the flexible element. Check angular and radial alignment before tightening the hubs, and use the fastening screws at the torque recommended by the manufacturer. If the equipment has reversing rotation or pulsating loads, consult the technical department to validate the model.

If you need a coupling with a different spacer length, a neighboring model from the Type A series or a different hub size, message us on WhatsApp with the part number or the model you are looking for. We can also guide you if you have to replace an existing coupling and cannot find the identification. At MR Accesorios Industriales we work with the GUMMI line and give you a prompt response so you can request a quote for the part you need.

To move forward with your quote, send us the part number A-20/25 ES 100 or the full designation of the coupling shown on the equipment nameplate. If you already have the assembly put together, a photo of the flange and the distance between shafts helps confirm the variant. Our sales team in Buenos Aires, Argentina, replies on WhatsApp promptly with the alternatives available for your application.