Industrial Cardan Drive Shaft SWC390BH for Seamless Steel Pipe Mill Machine

A cardan shaft transmits torque and rotational motion between two points that are not directly aligned, and the SWC390BH achieves this through one or more universal joints, shaft segments, and bearing assemblies arranged to bend in any direction while still carrying load. As the driving shaft rotates, the universal joints transfer torque to the driven shaft, accommodating angular, parallel, and axial misalignment between the motor or gearbox and the mill components it drives. This flexible arrangement is what allows the SWC390BH cardan drive shaft to keep delivering smooth, uninterrupted power even when machinery components shift slightly due to thermal expansion or operational movement during a continuous production run.

In the seamless steel pipe mill, the SWC390BH cardan drive shaft typically drives the forming rollers that shape steel into pipe, and it also powers conveyance systems that move raw material and finished pipe through successive production stages. Its ability to transmit power efficiently despite angular misalignment between motor and rollers is essential for continuous operation, and its tolerance for axial movement means the line keeps running smoothly even as heavy loads and high temperatures cause components to expand or shift position.

Lmin is the minimum collapsed length of the shaft body. D1, D2, and D3 are reference diameters at the yoke and flange connection points. Lm is the spline engagement length, n-d the bolt hole count and diameter, and k, t, b, g are flange and keyway dimensions used for fitting against the customer’s gearbox or motor housing.

Beyond seamless steel pipe forming, the high-torque profile of the SWC390BH suits a wider family of heavy-duty steel manufacturing machinery, and the cards below set out the specific roles this product plays across UK steel production operations.

Rolling stands and forming rollers across a seamless pipe mill all depend on the same fundamental capability: torque delivered reliably despite the angular misalignment that builds up between mill components during sustained heavy-duty operation.

Our facility is dedicated to the research, design, and manufacture of cardan drive shafts and related transmission components for metallurgical machinery, papermaking machinery, woodworking machinery, plastics machinery, mining machinery, and textile machinery. Computerised design technology, numerical-control machining equipment, and full-process inspection give every SWC390BH unit leaving the line consistent dimensional accuracy, whether the order is a single replacement shaft or a scheduled batch supply for a UK steel manufacturing plant.

Torque rating, shaft length, and joint configuration on the SWC390BH can all be tailored to match a specific pipe mill or rolling mill installation, removing the guesswork that comes with fitting a generic catalogue part to a heavy-duty, high-speed machine layout. Engineers work directly from customer drawings or sample parts to confirm fit before production, supporting OEM partners and replacement parts buyers across UK manufacturing regions including South Wales, Sheffield, and the North East.

Self-inspection runs on every unit before packing, and material certificates are available on request for buyers who need traceability documentation as part of their own quality system. Shipments are prepared with UK import requirements in mind, and a dedicated sales engineer is assigned to each enquiry so that specification questions get a direct, technically informed answer rather than a generic catalogue reply.

Finished SWC390BH cardan drive shaft units pass through a final dimensional check before packing, with each batch matched against the customer’s confirmed drawing or sample reference. This step-by-step verification process is part of why repeat UK buyers return to us for both standard catalogue orders and bespoke steel manufacturing projects.

Need a custom SWC390BH specification or a quote for your pipe mill line? Our engineering team responds to technical enquiries within one working day.

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A seamless steel pipe mill near Newport had been experiencing recurring vibration issues on its main forming line, with the maintenance team eventually identifying that the drive shaft connecting the gearbox to the forming rollers was no longer compensating adequately for the angular misalignment that had developed as the mill bed shifted slightly under sustained heavy load. The plant’s engineering manager reported that the vibration was affecting both pipe surface quality and bearing life across the line, leading to more frequent unplanned maintenance stops than the operation could comfortably accommodate.

After reviewing the line’s torque requirement, operating speed, and the degree of angular misalignment present, our engineering team recommended an SWC390BH cardan drive shaft sized precisely to the existing connection points and rated for the mill’s peak operating torque with an appropriate safety margin. The compact universal joint configuration was specifically selected to handle the sustained high-speed, heavy-duty conditions typical of seamless pipe forming.

Since the replacement, the mill has reported a marked reduction in vibration readings across the forming line and noticeably improved pipe surface consistency, with the maintenance team noting that bearing wear on adjacent components has slowed considerably compared with the previous shaft. The mill has since placed a standing order for spare units to keep on site for future scheduled maintenance.

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