Hydraulic Integrated vs. Separate Unit Bollards: Which One Does Your Project Need?

The Fundamental Design Choice in Hydraulic Bollards

When specifying hydraulic automatic bollards, one of the first decisions is whether to use an integrated (all-in-one) unit where the hydraulic pump and oil reservoir are built inside the bollard casing, or a separate-unit system where the hydraulic power pack is remotely located and connected via hydraulic hoses.

Both designs have legitimate use cases. Choosing wrong can lead to higher installation costs, maintenance difficulties, or insufficient hydraulic power for the application.

Hydraulic Integrated Bollards (All-in-One)

How They Work

The hydraulic pump, motor, oil tank, and control valve are all housed within the bollard's underground casing. Each bollard is self-contained — no external hydraulic connections required.

Advantages

Simplified Installation: No hydraulic piping between bollards; each unit is installed independently

Reduced Leak Risk: No long hydraulic hoses running underground; fewer connection points

Independent Operation: One bollard failure doesn't affect others on the same circuit

Compact Footprint: No separate power pack room or cabinet required

Limitations

Higher Unit Cost: Integrating hydraulic components increases per-bollard manufacturing cost

Service Access: Maintenance requires opening each bollard casing individually

Power Density: May have lower hydraulic power for very fast rise times in large-diameter bollards

Separate Unit (Remote Power Pack) Bollards

How They Work

A central hydraulic power unit (HPU) located in a remote cabinet or equipment room drives multiple bollards through buried hydraulic hoses. One pump serves 2-10 bollards depending on system design.

Advantages

Lower Cost at Scale: One central pump serves multiple bollards; lower total system cost for 4+ bollard installations

Easier Maintenance: All hydraulic components accessible from one service location

Higher Hydraulic Power: Central pump can be sized for very fast rise times even with large bollards

Equipment Room Protection: Hydraulic components protected in climate-controlled room

Limitations

Hydraulic Piping Complexity: Buried hoses require careful installation and leak detection planning

Single Point of Failure: HPU failure disables all connected bollards

Higher Excavation Cost: Trenches for hydraulic hoses increase installation labor

Decision Guide: Which One to Choose?

1-2 bollards: Integrated (lower installation cost)

4+ bollards in close proximity: Separate unit (lower total cost)

High water table / poor drainage: Separate unit (HPU above ground)

Heritage / aesthetic-sensitive sites: Integrated (smaller above-ground footprint)

Very fast rise time required (<1.5s): Separate unit (higher power)

UPARK Integrated Hydraulic Bollard Solution

UPARK specializes in integrated hydraulic bollard designs that eliminate the drainage and piping headaches of traditional separate-unit systems. Our 36V DC hydraulic integrated bollards feature IP67 waterproof rating, built-in control electronics, and no external hydraulic hoses — making them the preferred choice for architects, contractors, and facility managers who value installation simplicity and long-term reliability.