CASE CX145C SR CRAWLER EXCAVATOR

Technical Description

The Case CX145C SR is a short radius hydraulic excavator designed for optimal performance in confined urban construction sites and roadworks. Powered by an Isuzu 4JJ1X 4-cylinder diesel engine delivering 100 hp (75 kW) at 2000 rpm and 265 lb-ft max torque, it meets Interim Tier 4 emissions standards while ensuring fuel efficiency through electronic direct fuel injection and compatibility with ultra-low sulfur fuel and B5 biodiesel. The excavator features a 15.5 ft boom and an 8.2 ft arm, with a maximum digging depth of 18.1 ft and an extended reach along the ground of approximately 26.8 ft. Bucket rotation is rated at 178°, facilitating versatile digging and material handling. Weighing about 33,290 lbs (15,100 kg), the machine runs on a tracked undercarriage with 23.7-inch wide track shoes, offering a minimum ground clearance of 17.4 inches and a minimum swing radius under 7 feet, ideal for tight job sites. The hydraulic system delivers a maximum pump flow of 68.2 gallons per minute at 4970 psi, supported by a 41.8-gallon hydraulic reservoir and 19.9-gallon hydraulic tank capacity. The swing mechanism achieves up to 10.6 rpm with a mechanical disc swing brake and SAHR service brakes on each travel motor. Travel speed peaks at 3.5 mph (5 kph) with dual-stage relief or counterbalance travel control. Capacities include a 52.9-gallon fuel tank, 4.1-gallon cooling system, and 4.5-gallon engine oil volume. The excavator’s cab height is approximately 9.2 ft, with overall dimensions optimized for maneuverability. With powerful breakout forces — arm breakout force at 14,837 lbs and lift capacities over the end at a 10-foot radius of 19,251 lbs — the CX145C SR ensures high productivity in a compact footprint, making it suitable for projects requiring precision and agility without sacrificing power.