Daikin Compressor HC75 Rod Connection Set (6 PCs)

Daikin Compressor HC75 Rod Connection – Brand New (Set of 6 PCs)

This brand-new set of 6 Daikin compressor HC75 rod connections ensures maximum operating efficiency and structural integrity for your marine supply plants and cargo refrigeration systems. We specifically supply these high quality reciprocating compressor connecting rods as fresh unused surplus stock. The connecting rod is a vital structural bridge that converts rotational energy from the crankshaft into a linear piston stroke.

This set has been engineered to meet high maritime engineering criteria, to provide a perfect OEM-fit for Daikin C75 and HC75 compressor series. Standard overhauls or emergency top-end rebuilds onboard by marine engineers will ensure equal weight balance across all cylinders when replacing connecting rods in a full set, significantly reducing crankcase vibration and preventing catastrophic crankshaft scoring.

Model Identification

• Compatible Compressor Models: Daikin HC75 / C75 Series (including 6HC752LB-N, 6HC752LB-UC, 6HC752SB-C2UC, 6HC752SB-UC, 6HC752SB-UW)
• Interchangeable Part Numbers (MPN): 112220 / C112220 / 137201 (Configuration dependent)
• Item Condition: Brand New, Unused Surplus Stock (Open box for inspection and anti-rust preparation)
• Package Quantity: Complete set of 6 Pieces

Technical details:

Applications

• Merchant Vessel Provision Plants: Necessary replacement spares for Daikin multi-cylinder reciprocating systems in operation in deep-freeze and meat/vegetable cold storage rooms.
• Refrigeration compressors of the HC75 series open type are the best solution for industrial size maritime HVAC and cargo cooling systems of Refrigerated Cargo Holds (Reefers).
• Offshore Platform HVAC Systems Critical mechanical preparedness for oil and gas platform conditioning plants operating 24/7 in harsh, saline maritime conditions.

Our Marine Engineer’s Insights:

When managing multi-cylinder Daikin HC75 units on board, connecting rod maintenance is a make-or-break task. If a vessel experiences liquid slugging (refrigerant liquid carryover back to the suction valve), the immense incompressible force often slightly twists or compresses the conrod. Running a bent rod will rapidly wipe out your crankpin bearings and eventually score the crankshaft journal, turning a simple top-end maintenance schedule into a full block replacement.

Installation Guide:

1. Always Replace in Sets When replacing these rods, always replace as a complete weight-matched set of 6, even if just one cylinder had a bearing failure or lockup. Mixing old tired rods with new rods upsets the internal balance and can create localised harmonic vibrations.
2. Check Your Clearances: Before final torquing of the big-end bolts, utilise Plastigage to check your oil clearance between the crankpin metal and the rod journal is within Daikin’s standard manual wear limitations.
3. Pre-Lubrication is Critical When reassembling, make sure you generously lubricate all small-end wrist pin bushings and big-end shell inserts with clean compressor lubricating oil that meets the system’s POE or Mineral oil standard to minimise a dry start-up period before the oil pump develops head pressure.
4. Elongation & Torque Specs: Make sure rod bolts are torqued in progressive steps with a calibrated torque wrench to accurate Daikin maintenance manual figures. Do not reuse old rod bolts if they show evidence of stretching or thread distortion.