Power Rating
| Maximum Power | 173.5 HP 129.4 kW |
| Maximum Torque | 553 lb-ft @ 1400 rpm 750 Nm @ 1400 rpm |
| Rated Speed | 2000 to 2200 rpm 2000 to 2200 rpm |
| Minimum Power | 147.5 HP 110 kW |
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Industrial Diesel Engines C4.4 China NR4
C4.4 China Nonroad IV
Request A Price Find DealerKey Specs
- Maximum Power
- 173.5 HP
- 129.4 kW
- Maximum Torque
- 553 lb-ft @ 1400 rpm
- 750 Nm @ 1400 rpm
- Emissions
- China Nonroad Stage IV
- China Nonroad Stage IV
Overview
The Cat® C4.4 industrial diesel engine is offered in ratings ranging from 110-129.4 kW (147.5-173.5 hp) @ 2200 rpm, which meet China Nonroad Stage IV emission standards. The C4.4 is designed to meet the needs of many industries and applications, including bore/drill rigs, chippers/grinders, material handling, mining, earthmoving equipment, paving equipment, pumps, fruit harvesters equipment, turf and underground mining equipment.
Features At A Glance
Installation
Advanced Features
Ideal Applications
Total Cost of Ownership
Cat Dealer Product Support
Safety
Product Specifications for C4.4 China NR4
Emission Standards
| Emissions | China Nonroad Stage IV China Nonroad Stage IV |
General
| Engine Configuration | Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel |
| Bore | 4.1 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 268.5 in³ 4.4 l |
| Compression Ratio | 16.5:1 16.5:1 |
| Aspiration | Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) |
| Combustion System | Direct Injection Direct Injection |
| Rotation from Flywheel End | Counterclockwise Counterclockwise |
| Aftertreatment | DOC+DPF+SCR DOC+DPF+SCR |
Engine Dimensions - Approximate
| Length | 24.8 in 630 mm |
| Width | 29.4 in 748 mm |
| Height | 35.3 in 897 mm |
| Weight - Net Dry - Basic Operating Engine Without Optional Attachments | 1179 lb 535 kg |
Aftertreatment Dimensions
| Length | 26.5 in 673 mm |
| Width | 16.2 in 411 mm |
| Height | 12.2 in 309 mm |
| Weight | 110 lb 50 kg |
Aftertreatment Dimensions*
| Diameter | 10.64 in 270.3 mm |
C4.4 China NR4 Standard Equipment
Air Inlet System
- Standard air cleaners
Control System
- Full electronic control system, all connectors and wiring looms waterproof and designed to withstand harsh off-highway environments
- Flexible and configurable software features and well-supported SAE J1939 CAN bus enables highly integrated machines
Cooling System
- Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
- 50:50 water glycol mix
Flywheels and Flywheel Housing
- Fitted with SAE3 configuration as standard
Fuel System
- Electronic high pressure common rail
- Innovative filter design to ensure maximum protection of the engine
Lube System
- Wide choice of sumps for different applications
Power Take Off
- SAE A and SAE B flanges on left-hand side. Additional SAE A flange available on left-hand side. Engine power can also be taken from the front of the engine on some applications. Factory fitted compressors are also available.
General
- Available with or without a balancer
- Paint: Caterpillar yellow, with optional colors available at request
China Nonroad Stage IV Aftertreatment / Clean Emissions Control Equipment
- Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
China Nonroad Stage IV Aftertreatment/ Clean Emissions Control Equipment
- Selective Catalytic Reduction (SCR)
- 3" flex pipe connection with straight, 45°, and 90° options for flexibility
See how C4.4 China NR4 compares against frequently compared products.
Industrial
C4.4 China NR4
C4.4 China Nonroad IV
Selected
- Maximum Power
- 173.5 HP
- 129.4 kW
- Maximum Torque
- 553 lb-ft @ 1400 rpm
- 750 Nm @ 1400 rpm
- Emissions
- China Nonroad Stage IV
- China Nonroad Stage IV
Industrial
C3.6 China NR4
C4.4 China NR4
- Maximum Power
- 110 HP
- 82 kW
- Maximum Torque
- 331.7 lb-ft @ 1500 rpm
- 450 Nm @ 1500 rpm
- Emissions
- China Nonroad Stage IV
- China Nonroad Stage IV
Industrial
C7.1 China NR4
- Maximum Power
- 275 HP
- 205 kW
- Maximum Torque
- 927 lb-ft @ 1400 rpm
- 1257 Nm @ 1400 rpm
- Emissions
- China Nonroad Stage IV
- China Nonroad Stage IV
