Updated: 11 September 2026
A hydraulic ram does not always need replacing when it develops a leak or loses performance.
Many cylinders can be successfully repaired or refurbished. But where the rod, barrel, gland, mountings or internal components are badly damaged — or the original unit is obsolete or uneconomical to restore — replacement or remanufacture may be the better engineering route.
Completely Hydraulic supports hydraulic ram replacement, cylinder repair and custom cylinder manufacture for industrial machinery, construction plant, vehicles, material-handling equipment and specialist applications.
A hydraulic ram may need replacing when the cylinder is badly damaged, obsolete, unsuitable for the current application or no longer economical to repair. The decision should be based on condition, repairability, replacement availability, downtime, cost and the role of the cylinder within the machine.
Replacement may be considered when inspection shows significant damage or when repair is no longer the most practical route.
Possible reasons include:
A leaking cylinder should not automatically be replaced. Many hydraulic rams can be resealed, rebuilt or refurbished. Replacement becomes the better option when the cylinder’s condition, availability, downtime or repair economics justify it.
| Cylinder Condition | Possible Route |
|---|---|
| Seal leakage with otherwise serviceable components | Repair or reseal may be appropriate. |
| Rod, gland or piston wear | Refurbishment may be possible depending on condition. |
| Serious rod or barrel damage | Replacement or remanufacture may be more practical. |
| Obsolete cylinder | A custom-manufactured replacement may be possible. |
| Repeated failure | Root cause should be investigated before another cylinder is fitted. |
See Repair or Replace Your Failing Hydraulic Cylinder?.
A cylinder may fail because of the cylinder itself, but it can also be damaged by the way the machine or hydraulic system operates.
Common causes include:
Understanding the cause matters because simply fitting another ram can reproduce the same failure.
A replacement hydraulic cylinder must be suitable for both the hydraulic system and the machine.
Important factors can include:
A cylinder that physically fits is not necessarily hydraulically or mechanically suitable.
Three of the most important cylinder dimensions are bore, rod diameter and stroke.
The cylinder bore influences the piston area and therefore the force produced at a given pressure.
The rod must be suitable for the mechanical load, stroke and application. Rod diameter also affects the effective annular area on the rod side of a double-acting cylinder.
The stroke determines how far the actuator can move.
Changing any of these dimensions can alter machine performance, geometry or hydraulic demand.
Replacement cylinders must also match the operating principle of the machine.
These are hydraulically powered in one direction and normally return through gravity or another external force.
Hydraulic pressure is applied to both sides of the piston so the cylinder can be powered in both directions.
The correct porting, dimensions and machine arrangement must be maintained when replacing either type.
Telescopic cylinders use multiple nested stages to provide a long stroke from a relatively short retracted length.
They are commonly associated with applications such as:
Telescopic cylinder replacement should consider stage dimensions, mounting, load, stroke and the hydraulic circuit.
Construction machinery can place severe demands on hydraulic cylinders.
Applications include:
Damage may involve not only the cylinder but also pins, bushes, mountings and machine structure.
See Hydraulic Ram Maintenance & Repair for Heavy Equipment.
Tipping cylinders are used on applications such as trailers, commercial vehicles and material-handling equipment.
Replacement should consider:
It is particularly important not to assume that a visually similar tipping ram is an interchangeable replacement.
Industrial cylinders may be used in:
In these applications, downtime and availability of the original component can become major factors in the repair-versus-replacement decision.
Often, yes.
If the original hydraulic cylinder is obsolete or no longer available, it may be possible to manufacture a replacement based on the required dimensions and operating requirements.
This can be particularly useful for:
See Hydraulic Cylinder Manufacturing.
Where an off-the-shelf cylinder is unsuitable, Completely Hydraulic can support custom cylinder manufacture.
The required cylinder may be engineered around factors including:
For a major change in cylinder dimensions or machine function, the effect on the wider hydraulic system should also be considered.
Not without checking the engineering consequences.
A larger bore can generate more force at the same pressure, but it also requires more hydraulic fluid for the same stroke.
That can affect:
Changing the bore, rod, stroke or mounting arrangement can alter force, speed and machine geometry. A replacement should be selected around the complete application, not simply because a larger cylinder appears stronger.
If a machine repeatedly bends rods, damages seals or destroys cylinders, the root cause may exist outside the cylinder.
Possible causes include:
Repeated component failure is useful diagnostic evidence.
When a cylinder is replaced, associated hoses and fittings should also be inspected where relevant.
Look for:
A cylinder replacement should not introduce new hose-routing problems when the machine moves through its full operating range.
See Hydraulic Hose Routing Guide.
The most appropriate route depends on the machine, cylinder and type of work required.
| Requirement | Typical Route |
|---|---|
| Machine assessment | Often suitable for on-site inspection. |
| Straightforward cylinder removal or installation | May be suitable for mobile engineering depending on access and site conditions. |
| Cylinder refurbishment | Usually better suited to specialist workshop repair. |
| Custom cylinder manufacture | Requires workshop engineering and manufacturing capability. |
Typical Replacement Process
1. Identify the cylinder and fault
Establish what has failed and whether replacement is actually necessary.
2. Confirm cylinder specification
Check the relevant dimensions, mounting arrangement, porting and application requirements.
3. Decide repair, replacement or manufacture
Choose the route based on condition, availability, downtime and cost.
4. Remove the failed cylinder
The machine must be made safe and the cylinder removed using an appropriate method.
5. Install the replacement
Fit the correct cylinder, connections and associated components.
6. Check operation
Confirm movement, connections and machine operation as appropriate before returning the equipment to service.
Hydraulic cylinders can support substantial loads and contain stored hydraulic energy.
Before cylinder removal or replacement, appropriate measures should be taken to control:
Never work beneath equipment that depends solely on hydraulic pressure to remain raised.
If a cylinder-related failure stops machinery unexpectedly, CH provides 24/7 mobile hydraulic engineering support.
The initial attendance may involve:
Not every damaged hydraulic ram can be replaced immediately on site. Component availability, cylinder size, access and the extent of damage all affect the repair route.
See 24/7 Site Mobile Hydraulic Service.
If the cylinder is better suited to workshop repair, free collection may be available for qualifying jobs.
Eligibility can depend on:
See Free Hydraulic Cylinder Repair Collection Service.
Completely Hydraulic operates engineering and trade-counter locations in:
Birmingham and the wider West Midlands are supported through mobile hydraulic engineering.
CH supports cylinder and ram work for sectors including:
Jump the queue. Reduce downtime. Pay less for parts, labour and callouts.
✔ Priority response
✔ Lower rates day & night
✔ Trade discounts on parts
✔ 30-day credit terms (approved accounts)
CH can support more than simply sourcing another cylinder.
Depending on the application, capability includes:
A hydraulic ram should be replaced when replacement is genuinely the better engineering and commercial option. The correct decision depends on the cylinder’s condition, repairability, availability, application and the reason it failed in the first place.
Send CH photographs, machine details and any cylinder identification or dimensions you have available. The team can help determine whether repair, replacement or custom manufacture is the appropriate next step.
A hydraulic ram may need replacing when it is badly damaged, obsolete, unsuitable for the application or no longer economical to repair.
Sometimes. It depends on the extent and location of the damage, the rod condition, the rest of the cylinder and whether repair is technically and commercially practical.
It depends on the condition, repair work required, replacement availability, downtime and future service requirement. Neither option is automatically cheaper.
Yes. Where a suitable replacement is not readily available, CH can support custom hydraulic cylinder manufacture based on the application’s engineering requirements.
Often, yes. A replacement may be manufactured or engineered using the required dimensions, mountings, porting and system requirements.
Changing cylinder bore can change available force, but it also affects oil demand, actuator speed, machine structure and system requirements. Cylinder size should not be changed without engineering assessment.
Some cylinder removal and installation work can be completed on site where access, equipment and safety conditions allow. Other work may require specialist workshop facilities.
Repeated failure can result from misalignment, side loading, worn mountings, contamination, incorrect installation, machine geometry or wider hydraulic-system problems.
CH supports hydraulic cylinder work for tipping and commercial vehicle applications, subject to the individual cylinder and machine requirements.
Yes. CH provides 24/7 mobile hydraulic engineering support for urgent breakdowns. The final repair route depends on the damage, cylinder availability and site conditions.
