
Coupling RUADIGON X-3 (X-30) — Coupling with solid hubs
- Brand
- RUADIGON
- Category
- Power transmission
- Subcategory
- Couplings
- Series
- X
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Description
RUADIGON X-3 · Acople con mazas llenas 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 X-3 · Acople con mazas llenas and any equivalents.
The RUADIGON X-3, also listed as X-30, is a shaft coupling built with solid hubs. Its job is to link two shafts so torque passes from the driver to the driven machine, while the flexible element inside absorbs the small amounts of misalignment the installation may present. It suits equipment that runs continuously and does not call for frequent attention. MR Industrial Accessories supplies it within its power transmission range.
The commercial designation reads X-3 · Coupling with solid hubs, and the X-30 reference points to the same item, which helps when a replacement has to be traced from an old nameplate or drawing. The hubs are the solid pieces pressed or keyed onto each shaft end. Because they are one solid block rather than a split design, the assembly stays compact, which matters where the gap between shaft ends is short.
You will find this type of coupling on centrifugal pumps, fans, gearboxes, conveyor drives and machine tools. Plants in process industries, food production and water treatment use it where the two shafts are not perfectly in line and a small angular or radial offset has to be taken up, always inside the limits the manufacturer sets. It is also a practical choice when there is little room between shafts and the connection has to stay rigid in service with a straightforward mounting procedure.
Selection starts with the torque the drive actually produces, both nominal and peak, then the operating speed, the diameters of the two shafts and the nature of the load. Alignment should be checked with a straightedge or a dial indicator and corrected before the keys or set screws are tightened. If the design includes a flexible element or requires lubrication, follow the manufacturer's instructions for it. A coupling installed out of line puts extra load on the bearings and seals of the connected equipment.
When you need an equivalent, send the complete part number, the equipment designation and a photo of the nameplate. That is enough for us to identify the solid hub version or review options within the same X series. We can also help with the inserts, keys or set screws that go with it, so the part you receive matches what the application needs.
To request a quote for the RUADIGON X-3 (X-30) coupling, or to ask about other variants, message us on WhatsApp with the part number RUADIGON-X30-ML, the quantity and the equipment data. We come back with the technical information and the supply options that fit your case.
Dimensions
- Model
- X-3
- Equivalent to
- X-30
- Component
- Coupling with solid hubs
Frequently asked questions
- What is the difference between solid hubs and split hubs?
- Solid hubs are one-piece blocks fitted onto the shaft ends, so the shaft usually has to be free to slide them on. Split hubs open in two halves and can be placed around a shaft that stays in position. Both transmit torque; the choice depends on how accessible the shaft is during installation.
- Can I use the X-30 reference to order the same coupling as the X-3?
- Yes, the X-3 and the X-30 refer to the same coupling under two nomenclatures. Even so, it is worth confirming the mounting dimensions against the technical data or sending us the equipment details before ordering.
- What information do you need to find an equivalent coupling?
- Send the part number RUADIGON-X30-ML, the equipment designation and a photo of the nameplate through WhatsApp. With that we can look for alternatives in the X series or from other sources, keeping the mounting dimensions in mind.

