GUMMI A-400/250 flexible coupling
- Brand
- GUMMI
- Category
- Power transmission
- Subcategory
- Couplings
- Series
- Tipo A
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Description
GUMMI A-400/250 belongs to flexible 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-400/250 and any equivalents.
The GUMMI A-400/250 is a flexible coupling from the Type A line, built around a rubber flexible center and two standard hubs, designated CN. It links two shafts while taking up small misalignments, cutting vibration and softening torsional shocks, which helps protect the driven equipment. Plants running continuously and looking for quieter operation are the usual users. MR Industrial Accessories offers it within its power transmission range.
Reading the code is a good way to start. The A-400/250 sits in the Type A series, and its flexible rubber element measures 1130 mm across. Assembled, the coupling reaches 885 mm in length and 1219 kg in weight. Torque capacity is listed at 168750 Nm. Hubs accept a maximum bore of 250 mm, with a pilot bore of 120 mm as supplied. Those figures place it in high-power drive service.
Typical duty covers mills, crushers, high-flow pumps, industrial fans and conveyors, wherever shaft misalignment has to be compensated and vibration kept away from the rest of the train. The rubber element absorbs torque peaks, which eases the load on bearings and gears. Cement, mining, steel and aggregate processing plants are common homes for this size.
Sizing comes down to three inputs: the torque the drive actually transmits, the shaft diameters involved, and the rotation speed. A 250 mm maximum bore is the hub limit, so confirm that the 120 mm pilot bore can be machined out to your final shaft size. Weight and overall dimensions also matter when planning supports and lifting. Align the coupling at installation and check the flexible element on a regular schedule.
Need to replace an existing unit or match a different shaft? Send the code A-400/250, or the model you are working with, over WhatsApp or email. The team can point you to other Type A configurations and to equivalents from the brands we carry, and will help you confirm the right choice.
For a quote on the GUMMI A-400/250, or to ask about variants, send the code to MR Industrial Accessories on WhatsApp or email. Replies come back promptly with the details your application needs.
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 designation mean on this coupling?
- CN stands for two standard hubs: both hubs use the standard design for mounting on shaft ends. It is the most common arrangement and allows the bore to be machined to the size you need.
- What torque does the A-400/250 handle?
- The nominal torque is 168750 Nm per the manufacturer's data. Treat it as a reference and check it against your actual service conditions, including shocks and variable loads.
- Can the bore be smaller than the maximum?
- Yes. The maximum bore is 250 mm, and the hubs can be machined to smaller diameters. The 120 mm pilot bore makes final fitting easier. Send your shaft measurements on WhatsApp and we will advise.