Details
Cummins NTA855-C450 Engine Assembly | 450HP Industrial Diesel Power Unit
The Cummins NTA855-C450 engine assembly is a high-performance 14L heavy-duty diesel engine developed for demanding industrial and construction environments. As part of the Cummins NTA855 series, this model is widely used in mining machinery, construction equipment, generator sets, and marine auxiliary systems.
As a professional engine supplier, HekoPower provides genuine CCEC Cummins NTA855-C450 engine assemblies, offering stable performance, strong torque output, and long service life for global industrial users.
Tech Specs of Cummins NTA855-C450
General Engine Data
Engine Model: Cummins NTA855-C450
Type: 6 Cylinders in Line
Displacement: 14 L
Bore * Stroke: 140 * 152
Overall Dimension: 1389mm*914mm*1298mm
Net Weight (with flywheel & alternator): 1348 Kg
Key Performance Data
Rated Power: 336 kW/450HP
Rated Speed: 2100 rpm
Max Torque/Speed: 1831 N.m @ 1400 rpm
Fuel Consumption @ Rated Power: 215g/Kw.h
Idle Speed: 600 rpm
Torque/Rated Speed: 1525 N.m @ 2100 rpm
Output/Max Torque: 268 kW/370HP @ 1400 rpm
More Technical Data
Certification: Euro II
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Direct Injection PT Pump, STC
Compression Ratio: 14.0:1
Electrical System (Starter Motor/Alternator): 12V/24V
Lowest Starting Temp Without auxiliary system: -12℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 20.8 L
Technical In-Depth: Cummins NTA855-C450 14L Diesel Engine Specification
The NTA855-C450 is a 6-cylinder, in-line, four-stroke engine featuring a 140mm bore and 152mm stroke. While these dimensions are shared across the N-series, the C450 calibration is specifically engineered for sustained high-torque output.
NTA855-C450 Fuel Consumption and Torque Curve Analysis
For fleet managers, the NTA855-C450 fuel consumption per hour is a critical metric. At its rated power of 336kW (450HP) at 2100 RPM, the engine maintains high thermal efficiency. The torque curve is designed to peak early, providing the "lugging power" necessary for heavy-duty earthmoving. Unlike the NTA855-C400, the C450 utilizes a high-capacity turbocharger and specialized fuel injectors to maintain peak performance without overheating.
Cummins C450 Engine Cooling System Structure
To handle 450 horsepower, the cooling system is reinforced. It utilizes a high-flow water pump and a dual-thermostat housing to ensure that the 14-liter block maintains an optimal operating temperature even in desert mining conditions.
Strategic Applications: NTA855-C450 for Excavator and Bulldozer
The NTA855-C450 Engine for Shantui TY320 Bulldozer
In the world of heavy earthmoving, the NTA855-C450 engine for Shantui TY320 bulldozer is the industry standard. Its ability to provide consistent hydraulic pressure while under heavy blade load makes it indispensable. HekoPower frequently supplies these as drop-in replacements for TY320 and SD32 series bulldozers, ensuring minimal downtime for mining operators.
Mining Equipment and Heavy-Duty Power Packs
Beyond bulldozers, this engine serves as a robust power pack for mining equipment, including large-scale crushers and high-head water pumps. When used as a replacement Cummins engine for 300kW water pump sets, the NTA855-C450 offers a mechanical simplicity that electronic engines cannot match in remote locations.
Comparative Analysis: Cummins NTA855-C450 vs. C430 and C400
A common question we receive at HekoPower is: "What is the real difference between the NTA855 series variants?"
NTA855 Series Overview
The NTA855 series includes multiple configurations designed for different horsepower requirements, from mid-range construction engines to high-output mining engines.
NTA855-C450 vs. NTA855-C400 Performance Comparison
While both share the 14L displacement, the Cummins NTA855-C450 vs NTA855-C400 comparison reveals that the C450 features a different piston bowl geometry and fuel timing. This allows for a 50HP increase, which is vital for machines operating at high altitudes where naturally aspirated or lower-rated engines would lose efficiency.
NTA855-C450 vs C430
- C450 provides higher horsepower output
- Improved torque stability under load
- Better suitability for mining and heavy-duty machinery
HekoPower Expert Guide: Overhaul and Maintenance
To bypass generic AI-generated advice, we provide specific insights based on years of supplying genuine Cummins NTA855-C450 diesel engines.
Maintenance Parts List for Cummins NTA855-C450
For longevity, owners must adhere to a strict parts regimen. Key components include:
- Fuel Injectors: Specialized for the 450HP calibration.
- Fleetguard Filtration: LF670 oil filters and AF872 air filters.
- PT Pump Calibration: Ensure the Pressure-Time pump is set to the specific C450 code to prevent over-fueling.
Rebuilt vs. New Cummins NTA855-C450 Price
HekoPower offers both factory-new CCEC units and high-quality rebuilt options. While an original Cummins C450 engine price reflects its 0-hour lifespan and warranty, a professionally rebuilt unit can offer 90% of the life at 60% of the cost.
Cummins NTA855-C/P Series, original products from Chongqing Cummins Engine Plant(CCEC). This series mainly includes NTA855-C250, NTA855-C280, NTA855-C310, NTA855-C335, NTA855-C360, NTA855-C400, NTA855-C450, NTA855-P300, NTA855-P360, NTA855-P400, NTA855-P470.
