"> Bitzer (Germany) OS Series (Screw Compressor)
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Bitzer (Germany)

OS Series (Screw Compressor)

The Bitzer OS series is an open-drive screw compressor product line for large refrigeration systems on ships, particularly large fish processing ships, reefer carriers and LNG carrier AC systems. The screw design offers infinitely variable capacity control (10–100%) via a slide. Also available for ammonia (R717) as a natural refrigerant on fishing vessels.

50-800 kW cooling
Capacity
R404A / R134a / R507A / R717 (Ammonia)
Medium

Components & Design

Component data being added…

Technical Data

type Open-Drive Screw Compressor
variant count approx 5
period start year 2000
drive type Electric (external motor via coupling)
construction Cast iron housing, twin-screw rotor, oil-injected

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Common failures & inspection points

●Screw rotor bearing failure after 30,000-50,000 hrs
●Oil separator element clogging
●Capacity slide valve actuator failure
●Shaft seal oil leakage after 15,000-20,000 hrs

Service & Maintenance

Oil analysis every 2,000 hrs. Oil separator element every 8,000-10,000 hrs. Bearing inspection at 25,000 hrs. Complete overhaul 40,000-50,000 hrs.

Suppliers & Spare Parts

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Replacement Parts

Bitzer global network. Screw compressor parts more specialized — lead time: 2-4 weeks for bearings, 4-6 weeks for rotors.
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Equipment Model #37710 · ✓ still in production