Rod And Bore Machining In House
Honing, rechroming and rod manufacture happen on our own equipment, which shortens turnaround on long-stroke press cylinders that would otherwise sit waiting for an outside vendor.
About Us
To keep hydraulic equipment producing by fixing root causes, documenting every rebuild and specifying the filtration and cooling that stop the same failure from returning next quarter.
Who We Are
About Our Company
Extend Hydraulic Cylinders B.V.Extend Hydraulic Cylinders designs, builds and services industrial hydraulic systems for plants where a stalled cylinder stops the whole line. Our shop rebuilds cylinders of every bore from compact clamping units to long-stroke press rams, remanufactures piston and vane pumps, services directional and proportional valves, and assembles hose and tube to SAE and ISO practice. We also build complete power units: reservoir, pump group, manifold, filtration, heat exchanger and controls, wired and run-tested before shipment. Every rebuild leaves with a test record showing flow, pressure, drift and leakage, so you know exactly what you received.
Teams around call Extend Hydraulic Cylinders B.V.Extend Hydraulic Cylinders because hydraulic problems are rarely what they first appear to be. A cylinder that drifts may be a worn piston seal, a leaking counterbalance valve or a sticking proportional spool, and guessing wrong costs a second outage. Our technicians troubleshoot with pressure and flow instrumentation, infrared and fluid analysis instead of parts swapping. We keep common seals, rod stock, tube and hose on the shelf, maintain records of the systems we service, and schedule preventive work around your planned shutdown calendar rather than around ours.
Core Capabilities
- Pump and motor case drain flow is tested to confirm internal condition.
- Rebuilt cylinders are pressure and load tested with results recorded per unit.
- Seal selection is documented against fluid type, pressure and temperature.
- Manifold machining is inspected for port geometry and surface finish.
- Rod and bore dimensions are measured against tolerance before reassembly.
- Hose assemblies are crimped to specification and the dies verified regularly.
Our Mission
To give maintenance teams a hydraulic partner who answers the phone at three in the morning and still shows up with the right seal kit and a schematic in hand.
Our Advantages
Why Clients Choose Us
Round-The-Clock Dispatch
A real technician answers after hours and arrives with a stocked truck. Downtime on a press is measured in shifts, so response time is part of the service, not an extra.
Cleanliness Targets We Can Prove
Particle counts before and after service are documented against ISO 4406 codes, which matters when a proportional valve costs more than the pump feeding it.
Schematics You Can Actually Follow
Power units and manifolds ship with ISO 1219 symbol drawings, port tags and a component list, so the next technician is not tracing pipe by hand.
Failure Analysis, Not Parts Swapping
We report what wore and why, whether that is contamination, misalignment, side loading or an undersized relief setting, so the repair addresses the actual cause.
Every Rebuild Load Tested
Cylinders, pumps and motors run on our test stand before release, with measured flow, pressure holding and drift recorded on the paperwork that ships with the unit.
Round-The-Clock Dispatch
Field service engineers are available at any hour, with hose assemblies made at the counter while a driver waits for them.
Schematics You Can Follow
Custom power units ship with drawings your own fitters can read, which matters at two in the morning when we are not there.
Cleanliness We Can Prove
Particle counts are measured before and after flushing, so a cleanliness target is a report rather than a claim about our procedures.
From Our Desk
Insights & Updates
Sizing A Reservoir For A Real Duty Cycle
Rule-of-thumb multipliers of pump flow often leave systems running hot. A short look at heat load calculation, cooler selection and why ambient conditions belong in the sizing math.
Why Flushing After A Pump Failure Is Not Optional
Metal debris does not stay where it was made. We cover high-velocity flushing, filter change intervals during the process, and the particle counts that justify recommissioning the circuit.
Reading An ISO 4406 Cleanliness Code
Three numbers describe the particle population in your oil. We explain what each digit counts, which code your circuit actually needs, and why a filter rating alone does not prove you are reaching it.
Five Reasons A Cylinder Drifts
Drift is not always a bad piston seal. Counterbalance valves, pilot-operated check leakage, worn spools and thermal contraction all look alike from the operator seat. Here is how to tell them apart.
Client Feedback
What Clients Say
They found a counterbalance valve we had chased for weeks while replacing seals in the wrong cylinder. The press stopped drifting, and the service report explained exactly what was happening in the circuit.
R. CastellanoMaintenance Supervisor, Metal Forming Client
Our new power unit runs twenty degrees cooler than the one it replaced, and the schematic on the panel door is the first useful drawing we have ever had for that machine.
A. BeaulieuPlant Engineer, Plastics Processing Client
After the pump failure they flushed until the particle counts actually hit target, instead of declaring it clean after one pass. The replacement pump is still running without complaint.
M. OkonkwoReliability Engineer, Aggregates Client
Cylinder Down? Send Us The Measurements
Share the bore, stroke and mounting style with Extend Hydraulic Cylinders B.V.Extend Hydraulic Cylinders and we will confirm rebuild feasibility, turnaround and a written scope before you ship the unit.
