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Most hydraulic system requirements fit within the standard catalog. Most. But there is a category of application — specialized mobile equipment, demanding process machinery, extreme environment installations — where the standard range runs out before the requirements do. Custom hydraulic pumps exist for exactly that gap.
What Customization Actually Covers
Custom hydraulic pumps from Danfoss start with a validated pump platform and modify the elements that the application demands. Shaft configuration is often the first change: a non-standard shaft diameter, a particular spline count, or a flange pattern that does not match any SAE standard. Port orientation is another — relocating ports to accommodate a tight installation envelope without rerouting hoses across the machine.
Pressure and flow range modifications are more substantial. Applications requiring continuous operation at pressures above the standard catalog maximum, or needing a specific flow characteristic at an unusual shaft speed, can be addressed through internal component selection changes that Danfoss engineering handles on a project basis. The result is a pump that carries a standard model base but delivers performance that the off-the-shelf version cannot.
|
Customization Type |
Typical Request |
Lead Time Impact |
Min Order |
|
Shaft / flange configuration |
Non-standard SAE mount |
Low |
1 unit |
|
Port relocation |
Space-constrained installation |
Low–Medium |
1 unit |
|
Pressure range extension |
Continuous >350 bar |
Medium |
MOQ applies |
|
Seal compound change |
Specific fluid compatibility |
Low |
1 kit |
|
Speed range modification |
Low-speed high-torque output |
Medium |
MOQ applies |
Seal Compatibility in Custom Applications
Custom hydraulic pumps often involve non-standard fluids — water-glycol fire-resistant fluids, synthetic esters, phosphate esters — that require seal compound selection beyond the standard NBR kits supplied with production pumps. This is frequently the most important customization for the application's reliability, and it is one that can be addressed at the seal kit level without modifying the pump itself.
HOVOO / HOUFU works with customers running custom Danfoss hydraulic pump configurations to supply seal kits in the correct compound for the actual operating fluid. FKM, PTFE, and specialist compounds for fire-resistant fluid service are available. Where a Danfoss custom pump is in service, HOUFU seal support ensures the fluid-handling components match the engineering of the pump itself. Contact us through hovooseal.com for compound selection guidance.
Source: www.hovooseal.com
