Detailed Product Introduction of Scania D16 Engine Cooling Pump Assembly (Water Pump) Part No.02-25-6200

I. Core Basic Coding Information

II. Overall Product Structure & Included Fittings

• High-pressure cast iron pump housing assembly
• High-strength centrifugal impeller
• Integrated extended transmission shaft & double-row heavy-duty bearings
• Silicon carbide-graphite double-layer mechanical water seal (primary sealing + secondary dust-proof seal)
• Original matching sealing gaskets, positioning bolts and plugs
• Mounting flange base with mounting holes fully consistent with engine cylinder block

III. Material Specifications & Core Process Parameters

1. Material Configuration of Each Component

• Pump Housing: High-toughness FCD450 ductile cast iron, resistant to high-temperature coolant corrosion and cracking caused by mining vibration; integrated casting of heat dissipation channels
• Impeller: Cast aluminum-silicon alloy, finished by CNC dynamic balancing, adopting wide-blade high-flow design to suppress cavitation and boost coolant circulation flow
• Transmission Shaft & Bearings: Quenched and tempered 40CrMo alloy steel shaft paired with double-row maintenance-free roller bearings filled with lifetime grease, featuring high temperature resistance and low noise
• Water Seal Assembly: Silicon carbide rotating ring + graphite stationary ring with FKM fluoro-rubber sealing lip, resistant to ethylene glycol antifreeze and stable under long-term operating water temperature of 85–105℃ to eliminate leakage
• Sealing Gasket: Composite oil-resistant asbestos gasket with stable compression and resilience to prevent water seepage on flange surfaces

2. Key Performance Indicators

• Rated Circulation Flow: Matches high heat generation conditions of DC16 large-displacement engines to meet continuous heat dissipation demands under heavy mining loads
• Maximum System Pressure Resistance: 0.18MPa, consistent with OEM cooling system pressure standards
• Operating Temperature Range: -35℃ ~ +110℃, suitable for both alpine mining areas and high-temperature open-pit mining environments
• Transmission Mode: Direct gear drive without belt power loss for stable power transmission

IV. Core Functions

1. Forcibly circulates coolant among cylinder block, cylinder head, intercooler and radiator to continuously remove massive heat generated by engine combustion and supercharging;
2. Stably controls engine operating water temperature to avoid cylinder scuffing, piston melting and turbocharger high-temperature failure caused by overheating;
3. Double-layer dust-proof sealing structure blocks radiator impurities and coolant scale from invading bearings to extend pump service life;
4. Delivers stable cooling performance under heavy-duty working conditions of SY980/SY1250/SY1350 including long-time full-load mining and heavy-load climbing without cooling attenuation.

V. Typical Scenarios for Pump Replacement

1. Continuous antifreeze leakage from the drain hole at the pump bottom due to seal failure;
2. Frequent high engine water temperature, overheating alarm and weak coolant circulation in the radiator;
3. Abnormal operating noise, excessive bearing clearance and shaking impeller;
4. Impeller cavitation corrosion leading to insufficient flow and cylinder gasket damage caused by long-term high temperature;
5. Synchronous replacement of vulnerable cooling system parts for preventive maintenance during D16 engine overhaul.

VI. Detailed Applicable Model Description

Sany Mining Excavators

• SY980 (SY980H-S): 95-ton super large mining excavator factory-equipped with Scania DC16 engine
• SY1250 & SY1350: Hundred-ton super heavy mining excavators fully fitted with D16 series engines, sharing this water pump for cooling systems

Universal Compatibility

VII. Core Product Advantages

OEM-Level Matching Accuracy

Heavy-Duty Mining-Oriented Durable Design

Integrated Assembly Supply

Full-Channel Inventory Compatibility

VIII. Commercial Supply Terms