
Flexible coupling GUMMI A-25 with integral hub
- Brand
- GUMMI
- Category
- Power transmission
- Subcategory
- Couplings
- Series
- Tipo A
We reply promptly.
Tell us the quantity you need and request a quote by WhatsApp or email.
Can't find the exact model? Tell us the part number or model you need. We'll track it down and quote it, whether or not it appears in our catalog.
Description
GUMMI A-25 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-25 CI and any equivalents.
The GUMMI A-25 CI flexible coupling links two shafts while compensating for misalignment, damping vibration, and absorbing load spikes. Its integral hub (CI) design suits larger shafts, with a maximum bore of 30 mm. It is found in equipment that runs continuously and where bearings and gears need protection. MR Industrial Accessories supplies this coupling to customers across the United States and in several Latin American countries.
Part of the GUMMI Type A series, the A-25 CI features an integral hub—a single-piece construction that simplifies installation and increases assembly rigidity. It accepts a maximum bore of 30 mm, so it fits larger shafts than the standard version. The flexible intermediate element transfers torque and smooths oscillations, which helps reduce wear on adjacent components.
You will typically see this coupling on centrifugal pumps, fans, screw compressors, conveyor belts, and machine tools. In each case, it transmits power between shafts that are aligned with minor angular or radial deviations, and it filters vibrations that would otherwise reach the bearings. It is a common choice in industrial plants, workshops, and continuous process equipment.
When selecting the A-25 CI, consider the shaft diameters to be joined, the nominal torque and starting peaks, and the allowable misalignment. The integral hub requires checking the 30 mm maximum bore and the fastening method (keyway or set screw). During installation, align the shafts within the manufacturer's tolerances without forcing the flexible element, and tighten the bolts to specification.
For an equivalent, send us a WhatsApp message with the code A-25 CI or with your shaft dimensions and machine type. We can recommend other Type A configurations or alternatives from other brands we carry. MR Industrial Accessories responds quickly so you can get a quote without delays.
To complete your request, send the code GUMMI A-25 CI via WhatsApp to MR Industrial Accessories. We will provide a quote and coordinate shipping. You can also ask about our other couplings and power transmission products.
Dimensions
- Model
- A-25
- Configuration
- Integral hub (CI)
- Max bore
- 30mm
Frequently asked questions
- What does the CI configuration mean in the GUMMI A-25 coupling?
- CI stands for integral hub: the hub and flange are one piece, which simplifies mounting and adds rigidity. This version accepts a maximum bore of 30 mm, intended for larger diameter shafts than the standard variant.
- How do I choose the right coupling for my application?
- You need the shaft diameter, torque to be transmitted, operating speed, and degree of misalignment. With that information, we can determine whether the A-25 CI is suitable or if another size from the Type A series is better.
- Can I request a size other than the one published?
- Yes. Message us on WhatsApp with the code or model you need and we will send a quote promptly. We can also advise on equivalents from other brands we carry for your equipment.

