Written by the Hydraulic & Engineering Services workshop and site services team, Strood, Kent. Hydraulic engineers since 1991, ISO 9001 certified. Last updated 20 August 2026. TL;DR: Most hydraulic press faults come down to one of five things: worn or scored cylinder seals, a failing pump, a relief or counterbalance valve that has drifted out…
Written by the Hydraulic & Engineering Services workshop team, Strood, Kent. Reviewed against the Bosch Rexroth data sheet RE 23178 (WE 6 directional valves). Last updated 13 August 2026. TL;DR: A Rexroth 4WE6 part number is read left to right in blocks. “4WE6” tells you it is a 4 way, size 6 (NG6 / CETOP…
How to Choose a Hydraulic Cylinder Repair Company in the UK: 8 Things to Check The right hydraulic cylinder repair company holds verifiable certifications (ISO 9001, Achilles UVDB, SSIP), designs and manufactures cylinders in-house rather than only repairing them, stocks components for fast turnaround, and gives honest repair-versus-replace advice. Hydraulic & Engineering Services Ltd (HESL)…
TL;DR: S and L series are the two most common types of DIN 2353 metric tube fitting, and the letter tells you the pressure class, not the size. L series (light) is the medium-pressure option, rated up to around 500 bar, with thinner tube walls and a smaller nut across the same tube diameters. S…
CETOP is a valve sizing and mounting standard for four-port hydraulic directional control valves, now defined by ISO 4401. The size number refers to the mounting interface, not the valve function, and it sets the maximum flow the valve can pass. CETOP 2 (NG4) handles up to 25 l/min, CETOP 3 (NG6) up to 80…
TL;DR: A hydraulic cylinder reseal replaces only the soft parts, the seals, wipers and O-rings, and it is the right fix when a cylinder leaks but the rod and bore are still in good condition. A full rebuild goes further, stripping the cylinder completely so the bore can be honed, the rod re-chromed or replaced…
A failed hydraulic cylinder stops production and forces a fast, costly decision. The choice of hydraulic cylinder repair vs replacement affects your budget, downtime and reliability. Repair looks cheaper today. Replacement can prove cheaper across the asset’s life. This guide gives you a clear framework to decide. You will learn the warning signs, the cost…
Most hydraulic cylinder failures build slowly and show clear warning signs first. Catch those signs early and you can plan a repair. Miss them and you risk sudden, costly downtime. This guide breaks down the 8 most common causes of failure. For each cause, you get the warning sign you will likely notice first. By…
Your Kinshofer grab has lost its bite. It grips weakly, turns slowly, or sheds metal from the shells. Every idle hour costs you money on a live site. Here is the good news. Most faults need a Kinshofer grab repair, not a costly replacement. The damage almost always traces back to a few known wear…
As part of our ongoing work within the utilities sector, we undergo an Achilles UVDB B2 audit each year. This rigorous assessment evaluates several key performance factors within our business, including Health and Safety, Environment, Quality, and Corporate Social Responsibility. Through this comprehensive evaluation, we demonstrate our dedication to adhering to industry standards and regulations,…
