Rotec Hydraulics, a leading provider of hydraulic engineering solutions, have completed a recent project involving the removal, overhaul, and refitting of two critical hydraulic cylinders for a Canal Lock Lift Bridge.
The project, which also included the fabrication of a new bespoke clevis frame assembly and the replacement of hydraulic hoses, was executed to ensure the continued safe and reliable operation of the waterway infrastructure.
Due to the age and wear on the existing components, the overhaul was critical. Rotec’s work covered the entire lifecycle of the component replacement, from initial isolation to final commissioning:
- Cylinder Removal and Preparation: Rotec engineers worked alongside the customer’s team to safely isolate and remove both hydraulic cylinders from the bridge structure, before transporting them to the Rotec workshop for overhaul.
- Comprehensive Cylinder Overhaul: Involved stripping the cylinders, removing seized bolts and eyes, manufacturing new 4-inch rods, and performing repairs and refurbishment on the glands and pistons. The cylinder tubes were polished, and new seal kits were supplied and installed before the cylinders were re-assembled and tested.
- Reinstallation and Commissioning: Following overhaul, the cylinders were delivered back to the site. Rotec provided installation assistance, topped up the system with new hydraulic oil, and oversaw the final onsite testing to ensure safe and optimal performance.
The project also encompassed the fabrication of a replacement frame for the cylinder base end clevis.
- Clevis Frame Assembly: Rotec reverse-engineered measurements from the existing components to design and fabricate a new clevis frame assembly. The new frame was upgraded with larger side plates for increased durability. The fabrication underwent die-penetrant weld testing to confirm structural soundness.
- New Components: The project included the machining and supply of a replacement clevis pin and four new pin locating plates.
- Hydraulic Hose Assemblies: Rotec supplied and installed four new replacement hydraulic hose assemblies with stainless steel over braid, all of which were pressure tested prior to commissioning.
“Successfully refurbishing these critical cylinders and simultaneously fabricating a key structural component, all while minimising disruption, underscores our commitment to maintaining essential infrastructure,” commented Dale Lockart, Branch Manager of Rotec’s Stroud Service Centre.
The successful completion of the cylinder overhaul and clevis frame replacement ensures the continued operational efficiency and safety of the Canal Lock Lift Bridge for many years to come.
For more information on the services offered by Rotec, contact sales@rotec.net or phone 01823 348900.
