When OEM Can't Deliver on Time: SMS Demag Cylinder Replacement for a Metallurgical Plant
In metallurgical production, equipment downtime is measured not in hours but in money. When one of Europe's metallurgical plants needed a replacement tilting hydraulic cylinder, the critical parameter was not only the technical result — but the delivery time.
The Challenge
The problem was specific: the original SMS Demag cylinder had an unacceptably long delivery lead time through the official manufacturer. The planned maintenance of the production line could not be postponed — the equipment had to be ready within a clearly defined timeframe.
The task was straightforward: manufacture a full equivalent based on the original workshop drawing, maintaining all technical specifications and ensuring compatibility with the existing equipment.
Technical Specifications
- Type: double-acting (Schwenkzylinder)
- Piston diameter: 80 mm
- Piston rod diameter: 56 mm
- Stroke: 835 mm
- Working pressure: 210 bar
- Test pressure: 320 bar
- Seals: NBR, V-collar set, low-friction
- Rod surface treatment: hard chrome plating, Ra ≤ 0.3 µm
- Weight: 56.89 kg
The Solution
ProHydraulics organised the manufacture of the cylinder based on the customer's original drawing. All tolerances, materials and surface finish requirements were maintained in full accordance with the SMS Demag specification. The cylinder underwent pressure testing and leak testing prior to shipment.
Delivery was completed within the timeframe critical for the planned maintenance schedule.
The Result
The cylinder fitted perfectly on the first attempt with no modifications required. The line maintenance was completed on schedule. The customer received a technically identical solution at a competitive price — without compromising on quality or disrupting the production plan.
ProHydraulics specialises in the supply of custom hydraulic cylinders for industrial enterprises worldwide. If the original manufacturer cannot meet your deadlines — we are ready to offer a solution.