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Gummi Type A flexible coupling with rubber centre and bolted hubs · GUMMI A-105
GUMMI A-105 flexible couplingRepresentative image of this product type.

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GUMMI A-105 flexible coupling

Manufacturer part numberA-105Also known as: A105 · A 105
Brand
GUMMI
Subcategory
Couplings
Series
Tipo A
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Description

GUMMI A-105 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-105 and any equivalents.

The GUMMI A-105 is a flexible coupling from the Type A series that connects two shafts while its elastic rubber center absorbs misalignment and vibration. It is built with two standard hubs (CN) and is intended for continuous-duty equipment where overload protection matters. Key figures include a nominal torque of 3130 Nm and a maximum bore of 100 mm.

The coupling's rubber center measures 330 mm in diameter. The complete assembly is 250 mm long and weighs 44 kg. It comes with a 40 mm pilot hole that can be machined to a maximum of 100 mm to match your shaft. With a nominal torque of 3130 Nm, it suits medium- and high-power transmission drives.

Typical applications include centrifugal pumps, industrial fans, screw compressors, conveyor belts and mills. The rubber element reduces torsional vibration and accommodates small angular, parallel and axial misalignments, which helps protect bearings and seals. This makes the A-105 a practical choice in chemical, food and aggregate processing plants where minimizing corrective maintenance is a priority.

When selecting this coupling, check the drive's nominal torque and the diameters of the shafts to be joined. The 40 mm pilot hole and 100 mm maximum bore define the machining range. Consider the permissible misalignment and the operating environment; the rubber withstands oils and moderate temperatures. During installation, align the hubs precisely and verify that fasteners are tightened to avoid parasitic loads.

If you need an equivalent model, send the part number or your shaft dimensions via WhatsApp. Our team can advise on the hub configuration and the appropriate elastic center for your application, and we reply promptly.

Dimensions

Model
A-105
Configuration
Two standard hubs (CN)
Nominal torque
3130Nm
Max bore
100mm
Pilot bore
40mm
Elastic center Ø
330mm
Overall length
250mm
Weight
44kg

Frequently asked questions

What does the CN configuration mean on the GUMMI A-105 coupling?
CN indicates two standard hubs, meaning both ends are standard hubs without special machining. This is the most common setup for joining drive and driven shafts with an intermediate elastic rubber center.
Can I machine the bore of the GUMMI A-105 to a different size?
The coupling is supplied with a 40 mm pilot hole and accepts a maximum bore of 100 mm. Final machining must match your shaft diameter while respecting the required tolerances and balancing for the operating speed.
How do I request an alternative if the A-105 does not fit my needs?
Write to us on WhatsApp with the current part number, your equipment torque and shaft diameters. We evaluate the Type A series or other flexible coupling options to provide a compatible solution promptly.
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