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Flexible coupling GUMMI A-400/250
- Manufacturer Part Number
- A-400/250
- Brand
- GUMMIOfficial distributor
- Category
- Power transmission
- Subcategory
- Couplings
- Series
- Tipo A
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Description
GUMMI A-400/250 is a flexible coupling reference, within Power transmission. Request a quote for A-400/250 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The GUMMI A-400/250 flexible coupling is a power transmission component that connects two shafts and absorbs misalignments, vibrations and torsional shocks. Its design with a rubber flexible center and two standard hubs (CN) allows transmitting high torque with a certain flexibility, protecting the connected equipment. It is used in industrial applications where continuous operation and noise reduction are required. MR Accesorios Industriales sells this brand as part of its power transmission line, with more than 80 years of experience in the field.
The A-400/250 model belongs to the Type A series of GUMMI flexible couplings. Its configuration is two standard hubs (CN), with a rubber flexible center 1130 mm in diameter. The total length of the assembly is 885 mm and the weight reaches 1219 kg. The nominal torque it supports is 168750 Nm, with a maximum bore of 250 mm and a pilot bore of 120 mm. These characteristics position it as a robust option for high-power transmissions.
This type of coupling is used in equipment where vibrations must be dampened and small misalignments between shafts compensated, such as mills, crushers, high-flow pumps, industrial fans and conveyors. The elasticity of the rubber helps reduce torque peaks and extend the service life of bearings and gears. It is common in cement, mining, steel and aggregate processing plants, where loads are high and operating conditions demanding.
To correctly select a flexible coupling, take into account the required nominal torque, the diameter of the shafts to be connected and the rotation speed. The maximum bore of 250 mm indicates the limit for the hubs, but it is essential to verify that the pilot bore of 120 mm can be machined to the final size. Also consider the weight and dimensions for mounting and supports. Initial alignment and periodic inspection of the flexible element are key for reliable operation.
If you need a nearby size or an equivalent, write to us on WhatsApp with the code A-400/250 or the model you are looking for. We can advise you on other configurations of the Type A series or alternatives from other brands we sell. MR Accesorios Industriales has 3,407 power transmission references to help you find the right solution.
To request a quote for the GUMMI A-400/250 coupling or ask about variants, send the code on WhatsApp to MR Accesorios Industriales. We will reply shortly with the information you need for your application.
Dimensions
- Model
- A-400/250
- Configuration
- Two standard hubs (CN)
- Nominal torque
- 168750Nm
- Max bore
- 250mm
- Pilot bore
- 120mm
- Elastic center Ø
- 1130mm
- Overall length
- 885mm
- Weight
- 1219kg
Frequently Asked Questions
- What does the CN configuration mean in this coupling?
- CN indicates two standard hubs, meaning both hubs are of standard design to mount on the shaft ends. This configuration is the most common and allows machining the bore to the required size.
- What is the nominal torque of the A-400/250 coupling?
- The nominal torque is 168750 Nm, according to the manufacturer's specifications. This value is indicative and must be verified based on service conditions, such as shocks or variable loads.
- Can I request a coupling with a bore different from the maximum?
- Yes, the maximum bore is 250 mm, but it can be machined to smaller sizes. The pilot bore of 120 mm facilitates final adjustment. Ask us on WhatsApp with your shaft measurements for advice.

