"> ALLWEILER (CIRCOR/IDEX) NIM Serie
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ALLWEILER (CIRCOR/IDEX)

NIM Serie

ALLWEILER NIM is a horizontal end-suction centrifugal pump series widely used as ballast pump, sea-water cooling pump and general-service pump on bulk carriers, tankers and container vessels built since 1980. Available in 8 DN sizes with ~120 hydraulic variants for performance matching.

ALLWEILER (CIRCOR/IDEX) NIM Serie
50-1200 m³/h
Capacity
Sea water/ballast water
Medium

Components & Design

Component data being added…

Technical Data

pump type Horizontal end-suction centrifugal pump (ISO 5199)
variant count approx 120
period start year 1980
drive type Electric
construction Cast iron casing, bronze impeller, mechanical seal

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Common failures & inspection points

●Mechanical seal leakage at shaft entry after 8000-12000 operating hours
●Wear ring clearance increase causing reduced head/efficiency
●Bearing failure from coupling misalignment after motor overhaul
●Casing pitting/corrosion in seawater service after 15+ years

Service & Maintenance

Mechanical seal inspection every 8000h. Bearing replacement at 20000h. Wear ring clearance check at every drydock. Daily: discharge pressure log, vibration check.

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Replacement Parts

Keep mechanical seal kit, bearing set, wear rings, shaft sleeve, casing gasket onboard. Lead time CIRCOR/IDEX typically 6-10 weeks for non-stock items.
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Equipment Model #37448 · ✓ still in production