Details
Genuine Cummins QSM11-350 Construction Diesel Engine
The Cummins QSM11-350 industrial diesel engine stands as a benchmark for reliability and high-output performance in the heavy construction machinery sector. Manufactured to exacting standards, this 10.8L displacement, 6-cylinder diesel engine is specifically engineered to handle the punishing loads required by modern earthmoving and mining equipment. Delivering an impressive 261kW of power, the 350HP Cummins QSM11 engine ensures that heavy machinery operates at peak efficiency even in the harshest global environments. As a dedicated engine supplier, HekoPower provides the original Cummins QSM11-350 replacement engine directly from the production line, ensuring minimal downtime for your fleet.
Tech Specs of XCEC QSM11-350
General Engine Data
Engine Model: Cummins QSM11-350
Type: 6 Cylinders in Line
Displacement: 10.8 L
Bore * Stroke: 125 * 147
Overall Dimension: 1306mm*914mm*1280mm
Net Weight (with flywheel & alternator): 984 Kg
Key Performance Data
Rated Power: 261 kW/350HP
Rated Speed: 2100/2000 rpm
Max Torque/Speed(2100 RPM): 1776 N.m @ 1400 rpm
Max Torque/Speed(2000 RPM): 1830 N.m @1400 rpm
Fuel Consumption @ Rated Power: 217 g/Kw.h
More Technical Data
Certification: Tier III
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Common Rail High Pressure Injection
Compression Ratio: 16.3:1
Electrical System (Starter Motor/Alternator): 12V/24V
Lowest Starting Temp Without auxiliary system: -12℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 9.5 L
Control System: Full Electronic Control System(ECM)
Technical Deep-Dive: QSM11-C350 Diesel Engine Specifications
The heart of the QSM11-350 industrial engine lies in its 6-cylinder, in-line, 4-stroke architecture. With a displacement of 10.8L, this turbocharged charge air cooled industrial engine utilizes the Cummins Celect fuel system.
The Advantage of the Celect Fuel System & ECM
Unlike older mechanical models, the Cummins QSM11-350 ECM industrial engine uses an Electronic Control Module (ECM) to monitor engine parameters in real-time. This electronic control diesel engine ensures:
- Optimized Fuel Consumption: Tailored injection timing based on load.
- Precision Torque: A maximum torque of 1830 N·m, providing the "breakout force" required for mining and heavy excavation.
- Diagnostic Ease: Rapid troubleshooting via electronic service tools, reducing downtime.
Superior Fuel Efficiency & Operating Economics
The advanced electronic control system and high-pressure common rail fuel injection technology ensure optimal Cummins QSM11-350 fuel consumption across its operating range. The engine’s flat torque curve provides strong pulling power at low RPMs, reducing the need for frequent gear changes and lowering overall operational costs. This translates to a lower total cost of ownership and enhanced Cummins QSM11 engine reliability and maintenance cost profile over its long service life.
Technical Comparisons with Similar QSM11 Models
Understanding the Cummins QSM11-350 horsepower comparison against other models in the M-Series is critical for procurement managers looking to upgrade or replace failing powerplants. When comparing the QSM11-350 vs QSM11-300, the 350HP variant offers a significant increase in transient response, making it vastly superior for hydraulic-heavy applications where sudden load spikes are common.
A closer evaluation of the QSM11-350 vs QSM11-335 reveals that while both share the identical 10.8L block, the 350HP model is tuned for sustained high-load operations, typically favored in heavier aggregate handling. Conversely, when looking at the QSM11-350 vs QSM11-360 or the QSM11-350 vs QSM11-375, operators will notice that the 350HP engine prioritizes fuel economy and longevity over absolute peak horsepower. For the most extreme applications, comparing the QSM11-350 vs QSM11-400 highlights that the 400HP variant is heavily stressed, requiring much stricter maintenance schedules compared to the durable 350HP workhorse.
Engine speed calibration also plays a vital role in model selection. The debate between the QSM11-350 2000 RPM vs 2100 RPM configurations ultimately comes down to the hydraulic pump requirements of the host machine. The Cummins QSM11-350 2000 RPM engine is generally preferred for steady-state rotary equipment, whereas the Cummins QSM11-350 2100 RPM engine provides the dynamic throttle response needed for wheel loaders and transit machinery. Additionally, buyers often ask about manufacturing origins, specifically QSM11-350 vs QSM11-C350 or XCEC QSM11-350 versus CCEC QSM11 Motor. Whether designated as an XCEC QSM11-C350 or a CCEC variant, the core architecture remains identical, with both joint ventures strictly adhering to global manufacturing standards for the 350HP Cummins construction engine replacement.
Real Application Scenarios for the QSM11-350
Heavy Excavators
The demand for a reliable Cummins QSM11-350 replacement engine for excavator applications is immense. Hydraulic excavators operating in the 40-to-50-ton class rely heavily on the continuous power delivery of the QSM11-C350 engine for excavator duties. The 261kW Cummins QSM11 engine prevents hydraulic stall when breaking through dense bedrock or compacted clay. By utilizing the 350HP Cummins engine for excavator refits, fleet managers can restore older machinery to factory-fresh performance levels without the expense of purchasing a new machine.
Mining Machinery and Rotary Drilling Rigs
In the extractive industries, the QSM11-350 heavy-duty mining engine is exposed to severe dust, high altitudes, and extreme temperature fluctuations. The Cummins QSM11-350 engine for mining equipment is favored because its structural block can withstand continuous vibration. Similarly, the Cummins QSM11-350 engine for drilling rig operations, particularly as a QSM11-350 engine for rotary drilling rig systems, ensures that the massive rotational torque required to drive augers deep into the earth is delivered consistently without thermal breakdown.
Wheel Loaders
Articulated wheel loaders require rapid acceleration and immediate torque to scoop and lift heavy aggregate materials. The Cummins QSM11-350 engine for wheel loader applications delivers on this front. Upgrading to a QSM11-350 wheel loader replacement engine ensures that operators experience minimal turbo lag, improving cycle times and increasing overall site productivity.
Maintenance, Replacement Tips, and Common Misconceptions
Executing a successful QSM11-350 engine replacement for heavy equipment requires careful attention to the QSM11-350 engine replacement compatibility and the specific dimensions of the host machine's engine bay. Before purchasing a QSM11-350 engine assembly replacement, verify the flywheel housing and motor mount configurations, as these can vary slightly between excavator and wheel loader applications.
A prevalent misconception in the industry is that this model operates as a Cummins QSM11-350 common rail engine. This is factually incorrect. The genuine Cummins QSM11-350 electronic control engine actually utilizes the highly regarded Cummins CELECT fuel system. This cam-actuated, electronically managed system is far more tolerant of poor fuel quality than high-pressure common rail setups, which is a major advantage on remote construction sites. To maintain optimal Cummins QSM11-350 fuel consumption and protect the fuel system, operators must adhere to strict fuel filtration replacement schedules. Never bypass the primary water separator, as moisture is the leading cause of premature injector failure in the Cummins M-Series diesel engine.
Cummins M-Series Engineering Engine Range
Finding the exact power node and configuration for your specific machinery is crucial to maximizing operational efficiency. While the 350HP configuration offers an exceptional balance of power and durability for heavy-duty earthmoving, the broader M-Series family accommodates a wide spectrum of industrial demands.
Cummins QSM11-Construction Diesel Engine Series, original products from Xi’an Cummins Joint Venture Plant (XCEC), since 1986, 50% owned by Cummins USA, under Cummins Technical & Product Line. This series mainly includes QSM11-290, QSM11-300, QSM11-335, QSM11-350, QSM11-360, QSM11-375, QSM11-400.
Frequently Asked Questions (FAQs)
What is the typical Cummins QSM11-350 engine lead time and wholesale price?
As a direct genuine Cummins QSM11-350 engine supplier, HekoPower typically maintains a fast lead time of around 15 business days. The Cummins QSM11-350 price fluctuates based on global material costs and exchange rates. We encourage clients to contact us directly for the most current Cummins QSM11-350 wholesale price and bulk shipping rates.
Can I buy a Cummins QSM11-350 engine directly for export?
Yes. HekoPower operates as an experienced Cummins QSM11-350 engine exporter. We regularly ship the Cummins QSM11-350 engine from China to global destinations, providing full export documentation, secure crate packaging, and dedicated logistics support.
Does the original Cummins QSM11-350 replacement engine come with a warranty?
Absolutely. Every Cummins QSM11-350 industrial diesel engine supplied by HekoPower is backed by a standard 12-month warranty, ensuring peace of mind for your heavy machinery investment.
