Marine Cylinder Oil SAE 50 BN70 (Bulk)

Description

1. Product Overview

Marine Cylinder Oil SAE 50 BN70 is a high-performance lubricant formulated for low-speed, crosshead marine diesel engines burning intermediate or high-sulfur fuel oil. Its primary industrial use is cylinder liner and piston ring lubrication in ocean-going vessels, bulk carriers, and container ships. The key value proposition lies in its optimized base number (BN70) chemistry, which provides exceptional acid scavenging and detergency under severe combustion conditions. Strategically, it is indispensable for shipping lines seeking to reduce cylinder wear rates, extend overhaul intervals, and lower total cost of ownership in global fleet operations.

2. Key Specifications & Technical Characteristics

• Chemical composition: Highly refined mineral base oil (SAE 50 viscosity grade) plus overbased calcium sulfonate and phenate detergent-dispersant additive package

• Base number (BN): 70 mg KOH/g (ASTM D2896)

• Viscosity: SAE 50 – kinematic viscosity @100°C: 16.5–21.0 cSt

• Physical form/appearance: Dark brown viscous liquid; clear and bright

• Density @15°C: 0.89–0.92 kg/L

• TBN retention: ≥75% residual BN under typical engine loads

• Packaging options: Bulk ISO tanks, flexitanks, or vessel barge delivery

• Shelf life: 36 months in sealed, dry, contamination-free storage (ambient 5–40°C)

3. Core Industrial Applications

• Primary industries: Maritime shipping (deep-sea, coastal), naval defense, offshore support, and heavy marine power generation

• Specific operational use cases: Cylinder lubrication in MAN B&W MC/MC-C/ME series and WinGD (ex-Wärtsilä) RT-flex/X-DF engines burning 2.0–3.5% sulfur fuel oil or VLSFO blends

• Why better: Outperforms standard BN40/BN50 oils by neutralizing up to 40% more sulfuric acid from fuel combustion, preventing corrosive wear and bore polishing

• Efficiency advantage: Enables cylinder oil feed rates as low as 0.8–0.9 g/kWh, reducing lube oil consumption by 15–20% vs conventional BN70 alternatives

• Durability benefit: Extends piston ring and liner life by 8,000–12,000 operational hours, lowering dry-docking frequency

4. Competitive Advantages

• Quality consistency: ISO 9001:2025 certified blending; every batch tested for BN, viscosity, and sediment (<0.02% by mass)

• Supply reliability: Direct-from-refinery bulk allocation with 48-hour dispatch from three global hubs (Rotterdam, Singapore, Houston)

• Logistics capability: Dedicated bunker barges and ISO tank fleet; real-time blending-to-delivery tracking via IoT sensors

• Price competitiveness: Tiered bulk pricing (20MT+) with 90-day fixed-rate contracts; lower TCO than major OEM oils due to proprietary additive efficiency

• Sustainability: Low-SAPS formulation (≤0.3% sulfated ash) compliant with ECAs; supports carbon reduction via extended drain intervals

• Technical support: Free onboard oil analysis kit per shipment; 24/7 engine compatibility validation by certified marine engineers

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 20 metric tons (MT)

• Loading capacity per 20-ft container: Not applicable (bulk liquid). Instead – maximum single shipment: 1,500 MT per ocean-going barge or 24 MT per ISO tank truck for inland transfer. For flexitanks in 20-ft containers: max 20 MT net per container (subject to IMO and port regulations).