Client Background:
A Sri Lankan construction equipment company specializing in concrete mixing and pile foundation work required 2 customized hydraulic power units (HPUs) and 2 matching hydraulic cylinders to upgrade their existing machinery.
Client Requirements
Hydraulic Power Unit Specifications:
Motor: 3kW / 380V / 50Hz (compliant with Sri Lankan voltage standards)
Control Method: Manual directional valve (with locking function to prevent misoperation)
Hydraulic Hose: 5-meter length, high-pressure resistant (≥160MPa), with quick-connect couplings
Tank Capacity: 40L, equipped with level gauge and air breather
Maximum Working Pressure: 160MPa
Protection Rating: IP54 (dustproof and waterproof for tropical humid environments)
Cylinder Specifications:
Bore Diameter:125mm
Stroke:254mm (10 inches)
Piston Rod Diameter:90mm, hard chrome-plated surface (anti-rust/wear-resistant)
Mounting Style: Clevis mounting (client provided installation drawings)
Seals: NBR material (mineral oil-resistant, suitable for high temperatures)
Additional Requirements:
HPUs and cylinders painted in client's corporate blue (RAL color specified)
English operation manual and hydraulic schematic diagram provided
Delivery: 45 days to Colombo Port (CIF terms)
Customized Solutions
1. Technical Adaptation:
Motor compatibility solution: Added voltage stabilizer due to Sri Lanka's power fluctuations.
Manual valve optimization:Anti-jamming design ensured smooth operation in high heat/humidity.
Cylinder reinforcement:Installed rod wipers to prevent construction site dust ingress.
2. Production & Testing:
Pressure testing:Each HPU underwent 160MPa pressure-holding test (30 min zero leakage).
Tropical climate adaptation:Tank interior corrosion-proofed; hose exteriors UV-coated.
Color customization: Sprayed per client's RAL code with touch-up paint included.
3. Logistics & Customs:
Packed in wooden crates + moisture barrier for rust/impact protection during ocean transit.
Pre-submitted Sri Lankan SLS certification documents to expedite clearance.
Outcomes
Client Acceptance:
Equipment commissioned successfully on arrival; client particularly praised the manual valve's ergonomics.
Cylinders showed zero leakage under full-load testing; chrome plating remained intact.
Follow-up Collaboration:
Client placed repeat order for 3 additional units and inquired about compact HPUs for mobile equipment.
Referred to 2 local mining companies (10-unit potential order volume).
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