Key Specs
The Cat® M323 rail excavator features a modular design with options for short-tail and long-tail configurations. The flexible drive system – tire, rail, or an innovative combination – can be switched between at the touch of a button during operation, to help ensure optimal operation in a wide variety of applications. The next generation rail excavator is purpose built for rail and is the ideal machine to help increase versatility and efficiency.
Built with specialized components that allow you to travel directly on railroad tracks while maintaining the full functionality of a traditional excavator.
Powerful hydraulics, advanced controls, and reinforced components that handle demanding rail maintenance tasks with speed and precision.
Seamlessly transition between road and rail travel, handling a wide range of tasks from lifting and grading, to tie replacement and brush cutting all within a single machine.
Displaying 1-6 of 8
| Engine Power - ISO 14396 | 180 hp 134 kW |
| Engine Power - ISO 14396 (DIN) | 183 hp (metric) 183 hp (metric) |
| Engine Model | Cat C4.4 Cat C4.4 |
| Net Power - ISO 9249 | 174 hp 129 kW |
| Net Power - ISO 9249 (DIN) | 176 hp (metric) 176 hp (metric) |
| Bore | 4 in 105 mm |
| Stroke | 5 in 127 mm |
| Displacement | 269 in³ 4.4 l |
| Biodiesel Capability | Up to B20¹ Up to B20¹ |
| Emissions | Meets EU Stage V emission standards. Meets EU Stage V emission standards. |
| Note (1) | Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan running at intermediate speed. Rated speed at 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture. Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, Clean Emission Module (CEM) exhaust gas aftertreatment, alternator, and cooling fan running at intermediate speed. Rated speed at 1,700 rpm. Advertised power is tested per the specified standard in effect at the time of manufacture. |
| Note (2) | ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). ¹Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with ULSD blended with the following lower-carbon intensity fuels** up to: 20% biodiesel FAME (fatty acid methyl ester)*** or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. *While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. **Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. ***Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). |
| Operating Weight Maximum | 53572 lb 24300 kg |
| Operating Weight Minimum | 47840 lb 21700 kg |
| Note (1) | Operating weight includes full fuel tank, operator and pneumatic tires. Weight varies depending on configuration. Operating weight includes full fuel tank, operator and pneumatic tires. Weight varies depending on configuration. |
| Maximum Travel Speed - Road Mode | 16 mile/h 25 km/h |
| Maximum Travel Speed - Rail Mode | 19 mile/h 30 km/h |
| Main System - Maximum Flow - Implement | 81 gpm 306 L/min |
| Maximum Pressure - Implement Circuit - Normal | 5076 psi 35000 kPa |
| Maximum Pressure - Implement Circuit - Heavy Lift | 5366 psi 37000 kPa |
| Maximum Pressure - Implement Circuit - Travel Circuit | 5076 psi 35000 kPa |
| Maximum Swing Speed* | 9 r/min 9 r/min |
| Maximum Swing Torque | 38400 lbf·ft 52 kN·m |
| Note (1) | *For CE-marked machine default value may be set lower. *For CE-marked machine default value may be set lower. |
| Fuel Tank | 63.4 gal (US) 240 l |
| Diesel Exhaust Fluid (DEF) | 5 gal (US) 19 l |
| Cooling System | 7.9 gal (US) 30 l |
| Hydraulic Tank | 30.6 gal (US) 116 l |
| Hydraulic System - Including Tank | 71.3 gal (US) 270 l |
| Boom | Variable Adjustable Boom 5.2 m (17'1") Variable Adjustable Boom 5.2 m (17'1") |
| Stick | 2 m (6'7") 2 m (6'7") |
| Shipping Height - Top of Cab | 10.5 ft 3209 mm |
| Shipping Length | 29.3 ft 8921 mm |
| Support Point | 13.9 ft 4234 mm |
| Boom | Variable Adjustable Boom 5.2 m (17'1") Variable Adjustable Boom 5.2 m (17'1") |
| Stick | 2 m (6'7") 2 m (6'7") |
| Maximum Cutting Height | 28.7 ft 8741 mm |
| Maximum Digging Depth | 10.7 ft 3247 mm |
| Maximum Reach at Ground Line | 24.1 ft 7345 mm |
| Stick Forces (ISO) | 18659 lbf 83 kN |
| Bucket Forces (ISO) | 26303 lbf 117 kN |
| Note (1) | Range values are with 9A transmission and dual pneumatic tires (10.00-20). Range values at the stick end. Range values are with 9A transmission and dual pneumatic tires (10.00-20). Range values at the stick end. |
| Note | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with R134a (Global Warming Potential = 1430), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 1.144 metric tonnes (1.261 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 0.0004 metric tonnes (0.0004 tons). The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. If equipped with R134a (Global Warming Potential = 1430), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 1.144 metric tonnes (1.261 tons). If equipped with R1234yf (Global Warming Potential = 0.5), the system contains 0.8 kg (1.8 lb) of refrigerant which has a CO2 equivalent of 0.0004 metric tonnes (0.0004 tons). |
M323 Railroad Excavator short tail design silhouette
M323 Railroad Excavator long tail design silhouette
M323 Railroad Excavator operators in the cab
M323 Railroad Excavator with external lights
M323 Railroad Excavator push-to-start button and controls
M323 Railroad Excavator driving in the dirt
Europe ‧ English