Alfa Laval MAB 104B-24 Oil Separator Purifier

Alfa Laval MAB 104B-24 Centrifugal Oil Separator Purifier (Bare Unit / Only Purifier)

The Alfa Laval MAB 104B-24 is a solids-retaining (manual clean) centrifugal disc-stack separator engineered for the continuous purification of mineral oils, distillates, marine diesel oil (MDO), and lubricating oils. Operating on two-liquid and solid separation (3-phase purification mode), this configuration actively extracts free water, suspended moisture, and fine insoluble particulate down to sub-micron dimensions from oil matrices.

This listing supplies the bare purifier assembly (Only Purifier), comprising the complete mechanical centrifuge unit: cast-iron frame, precision-ground vertical bowl spindle, bronze worm gear assembly in oil bath, horizontal drive shaft with centrifugal friction clutch/brake, and the full high-grade stainless steel bowl disc stack. It is optimized as a drop-in replacement machine for existing skids or custom retrofits where external feed systems, pumps, and starter panels are already integrated.

Model Details

• Manufacturer: Alfa Laval
• Type Designation: MAB 104B-24 / MAB 104B-14/24
• OEM Assembly / MPN: 881241-08-14 (Standard Bare Purifier Unit)
• Separator Classification: High-speed centrifugal disc-stack separator, manual cake discharge (solids-retaining)
• Operational Configuration: 3-Phase Purifier (Liquid-Liquid-Solid) with gravity disc regulation (convertible to 2-phase clarifier via blind disc)

Key Features

1. Balanced Centrifugal Separation Power: Generates high centrifugal force at 7,500 RPM bowl speed, effectively stripping out dense water pockets, cat fines, and catalytic abrasive particulates.
2. Solids-Retaining High-Yield Disc Stack: Incorporates a tightly toleranced stainless steel cone disc stack that maximizes settling area within a compact 1.26-liter sediment retention profile.
3. Dual Purifier/Clarifier Adaptability: Operates as a 3-phase water-oil-sludge purifier via gravity ring sizing, or rapidly converts into a single-phase clarification unit utilizing an internal bottom blank disc.
4. Durable Drive Assembly: Driven by an internal worm wheel and pinion assembly running directly in an isolated 0.8L oil bath with an integrated friction clutch to smooth starting torques and avoid motor overloading.
5. Heavy-Duty Cast Iron Frame: Precision-machined, cast-iron lower frame dampens operational vibrations (maintained below 9.0 mm/s RMS) with silumin/stainless fluid-contact hoods to resist acidic lube corrosion.

Applications

• Marine Main & Auxiliary Engines: Continuous bypass and offline conditioning of crosshead or trunk piston crankcase lube oils (SAE 30, 40, 50) to remove carbon, soot, and condensate.
• Marine Diesel Oil (MDO) & Gas Oil (MGO): Removal of water ingress, suspended water emulsion, and solids before injection pump transfer.
• Diesel Power Plant Generators: Fuel polishing and crankcase lubricating oil cleaning for continuous-duty baseload industrial diesel generators.
• Factory Hydraulic & Gear Oils: High-efficiency cleanup of degraded industrial hydraulic fluids, turbine oils, and circulating quench oils.
• Machine Shop & Metalworking Applications: Separation of tramp oils, particulate grit, and water contamination from heavy coolants and cutting emulsions.

Direct Equipment Cross-Compatibility

• Alfa Laval Skid Platforms: MAB 104 Modules, MMPX 404, MAPX 204 drop-in retrofits.
• Marine Engine Lube Lines: MAN B&W, Wärtsilä, Yanmar, Daihatsu, Caterpillar, and Bergen medium/high-speed marine generator sets.
• Industrial Clarifier Packages: Directly compatible with Alfa Laval feed blocks, flat-bed oil filtering rigs, and centrifuge modules requiring standardized 2.0 m³/h separators.

Part Number Cross-References

• Complete Separator Base MPN: 881241-08-14 / 881241-08-01
• Bowl Assembly P/N: 543171-80 / 543171-08
• Bowl Spindle P/N: 542861-01
• Worm Wheel (50 Hz / 60 Hz): 542232-01 (50:10) / 542232-02 (49:12)
• Intermediate Service Kit: 546145-01
• Major Overhaul Kit: 546145-02
• Friction Clutch Lining Blocks: 176206-01 (Set of 2)

Frequently Asked Questions

What does “Only Purifier” / “Bare Separator” mean in this package?

This means you are purchasing the core mechanical centrifuge machine—including the cast-iron housing, complete vertical spindle assembly, worm gearbox, and the complete disc-stack bowl with top covers. It excludes attached feed/discharge gear pumps, an electric motor, external starter panels, and skid piping, making it the ideal direct swap-out for an existing damaged unit.

Can the Alfa Laval MAB 104B-24 run on both 50 Hz and 60 Hz electrical grids?

Yes. The machine runs on both 50 Hz and 60 Hz supplies, but the internal gear set must match your supply frequency. The 50 Hz variant utilizes a 50:10 gear ratio to reach 7,500 RPM, while the 60 Hz setup uses a 49:12 ratio for 7,350 RPM. Ensure your ship or plant supply matches the internal worm gear fitted before commissioning.

What is the primary difference between the MAB 104 Purifier and Clarifier modes?

In Purifier mode, the unit separates three phases: clean oil, continuous free water discharge, and solid contaminants. It requires a water seal and a correctly selected gravity disc. In Clarifier mode, the water outlet is closed via a solid blanking disc, configuring the machine strictly to strip trace particulate matter and very small amounts of water from completely dry oil.

How frequently must the manual cleaning of the bowl be performed?

Because the MAB 104 is a solids-retaining centrifuge, the manual cleaning interval depends strictly on oil cleanliness and throughput. Under typical marine auxiliary engine lube oil polishing conditions, clean the disc stack every 24 to 72 running hours. If cleaning heavy distillate or contaminated oil, inspect the 1.26-liter sediment space every 12 to 24 hours to prevent bowl imbalance.

How do I stop oil from discharging out of the water outlet?

Oil exiting through the heavy-phase water outlet indicates a blown water seal. Immediately divert oil feed, verify that the separation temperature is at target, ensure fresh water priming is completed, and swap down to the next smaller internal diameter gravity ring.