RINGSPANN Conical Shaft-Hub Connections
Conical shaft-hub connections are fastening elements that transmit torque by radial tightening between a shaft and a hub, without the need for a key or additional machining. They are mounted in the annular space between both parts and, when actuated, generate uniform pressure that locks the connection. MR Accesorios Industriales offers the RINGSPANN line in Buenos Aires, Argentina, with technical advice to select the size according to each application's part number.
The designation of these connections is organized by numeric blocks that identify the series and the size. In the examples of the line, part numbers such as 4201-020001-000000 or 4201-032001-000000 keep the prefix 4201 and vary in the central segment, which references the construction size. The final zeros correspond to configuration variants within the same family. To request a quote, it is enough to indicate the complete part number shown on the drawing or on the part to be replaced.
They are used in drives where pulleys, gears, couplings or flywheels need to be fastened onto smooth shafts, with or without a keyway. They are common in machine tools, process equipment, conveyors, pumps and drive systems in industrial plants in Argentina. They also appear in applications where frequent disassembly requires a detachable connection without damaging the shaft or hub, something that a key does not always allow.
To select the correct connection, you must consider the shaft diameter, the hub diameter, the torque to be transmitted and the axial or radial loads present. Mounting requires cleaning and checking the conical surfaces, applying the indicated lubricant and respecting the screw tightening sequence. Alignment between shaft and hub must be checked before tightening, and the available axial clearance conditions the type of element to choose.
Conical connections from different brands can be interchanged if the mounting dimensions, torque range and actuation type match. It is not enough for the part number to be similar: the cone geometry, the number and size of the screws and the permissible surface pressure must be compared. If in doubt, it is advisable to compare drawings or send the measured dimensions so that the technical team can validate the equivalence.
MR Accesorios Industriales offers the RINGSPANN line as exclusive representative in Argentina, with more than 80 years of experience in power transmission. If you need a shaft-hub connection for a machine or a spare part, send the part number or the shaft and hub dimensions on WhatsApp and we will reply shortly with the corresponding alternative.
Some codes:4201-020001-0000004201-022001-0000004201-024001-0000004201-025001-0000004201-028001-000000



