Bock FX14/1366 Open-Type Compressor

Bock FX14/1366 Open-Type Reciprocating Compressor

The Bock FX14/1366 is a 4-cylinder reciprocating compressor engineered for marine secondary cooling, provision refrigeration, cargo hold chilling, and stationary industrial chillers. Characterized by its robust cast-iron crankcase, bidirectional forced-feed lubrication system, and external shaft drive, the FX14/1366 is tailored specifically for synthetic HFC and HFO refrigerants (utilizing polyolester oil). Designed to withstand continuous mechanical stresses, shaft deflection forces, and heavy marine ambient vibrations, the unit features a high displacement output of 119.0 m³/h at 1,450 RPM and supports both flexible direct-coupling and V-belt pulley arrangements.

Technical Details:

Applications

• Marine HVAC Plants: Central air conditioning systems, wheelhouse chillers, accommodation package units, and control room cooling skids on merchant vessels, offshore platforms, and tankers.
• Ship Provision Refrigeration: Direct-expansion (DX) and chilled-water plants for deep-freeze (-25°C meat/fish lockers) and positive-temperature vegetable chambers.
• Refrigerated Cargo Holds: Below-deck temperature management for bulk reefer ships, specialized chemical vessels with deck container reefer sockets, and livestock transport carriers.
• Industrial Cold Logistics: Dockside cold storages, blast-freezing tunnels, and seafood processing plants operating on HFC/HFO synthetic blends.

Compatible Prime Movers & Systems

• Electric Motors: 30 kW to 55 kW B3 foot-mounted 4-pole / 6-pole marine electric motors (400V/440V, 50/60 Hz, IP55/IP56).
• Direct Marine Packages: Suitable replacement core for Sabroe, Carrier Transicold marine skids, Bitzer 4N/4P series conversions, and older Bock F14 platforms.
• Flywheel Assemblies: Fits Bock standard 322 mm and 385 mm diameter SPB-profile V-belt pulley wheels.

Part Number Cross-References

• Bock Order Code / Legacy MPN: 11702
• Danfoss Global Material Code: 097B11702
• Schiessl Catalog ID: 102.3168
• Sister Mineral-Oil Model (R22/R12/R717): Bock F14/1366 / Bock F14/1366 NH3

Frequently Asked Questions

What is the difference between Bock F14/1366 and FX14/1366?

The standard F designation denotes models built with internal elastomeric seals and oils intended for conventional mineral or alkylbenzene oils (used with HCFCs like R22 or ammonia for the F-NH3 version). The FX designation indicates factory preparation for synthetic polyolester (POE) lubricants and HFC/HFO refrigerants, featuring chemically resistant seals, gaskets, and ester-compatible oil.

Can the Bock FX14/1366 operate in either direction of rotation?

Yes. The compressor features a mechanical, direction-independent oil pump. Whether driven clockwise or counterclockwise, the internal eccentric mechanism delivers positive oil pressure to all crankpins and main bearings. However, ensure that any external flywheel fan blades or motor cooling fans are oriented to blow cooling air across the cylinder heads.

What is the exact oil type and volume required for an oil change?

The FX14/1366 requires a total crankcase volume of 6.3 liters of synthetic polyolester oil with an ISO VG 55 viscosity rating (such as Fuchs Reniso Triton SE 55 or equivalent approved POE lubricants). For retrofits with hydrocarbon or ammonia applications, consult factory specifications for specialized lubricants.

What causes high discharge temperatures on this model?

Elevated discharge temperatures typically stem from excessively high compression ratios, severe suction vapor superheat entering the intake flange, broken or leaking high-pressure reed valves on the discharge plate, or operation outside the allowable envelope without cylinder head fan cooling.

What are the correct cylinder head bolt torque ratings?

Cylinder head bolts on the F/FX14 series must be tightened incrementally in a cross-pattern sequence. Torque M10 grade 8.8 bolts to 60 Nm (and M12 bolts to 105 Nm where applicable) using a calibrated torque wrench. Re-check torque settings after initial operational heat-soaking.