Kato SR-700L

The Kato SR-700L is a high-performance rough terrain crane rated at 70 tons at a 2.5-meter working radius. It is engineered for demanding lifting applications in confined job sites and rugged terrains. The crane is equipped with a 6-section hydraulically telescopic boom that extends from 10.0 to 44.5 meters. For additional reach, it features a 2-section SL Jib with a length ranging from 8.3 to 13.2 meters. The SL Jib can be offset between 7° and 60°, functioning like a luffing jib and offering enhanced versatility in lifting operations. With the jib attached, the crane achieves a maximum lifting height of 58.6 meters.

The SR-700L delivers impressive winch performance. The main winch achieves a hoisting line speed of 160 m/min (5th layer), while the auxiliary winch reaches 150 m/min (4th layer). These winches are powered by axial plunger-type motors through a planetary gear reduction system, controlled independently by their respective levers and equipped with automatic brakes.

Slewing is managed through a ball-bearing-type system at a rotation speed of 1.8 rpm. The boom has a derricking range from 0° to 84°, with a full raising time of 66 seconds and a full extension time of 135 seconds. Outriggers feature a hydraulic H-beam type design and can be adjusted to various widths, ranging from 2,690 mm fully retracted to 7,600 mm fully extended, catering to site-specific stability requirements.

The carrier section is a 4×4 configuration with hydro-pneumatic suspension, offering excellent off-road capability and maneuverability. It has a maximum travel speed of 49 km/h and a gradeability of 60%. The crane is powered by a Mitsubishi 6D24-TLE2A engine, a turbocharged 11.945-liter 6-cylinder diesel unit, delivering 257 kW (approx. 345 hp) at 2,200 rpm and 1,275 Nm of torque at 1,500 rpm. The drivetrain includes a lock-up clutch torque converter and a fully automatic 6-speed transmission with 2 reverse gears.

Safety is integral to the SR-700L design. It is equipped with Kato’s Automatic Crane System (ACS), boom and jib dampening functions, overhoist prevention devices, outrigger status detectors, slew locks, and automatic winch brakes. Standard equipment includes a cab with ergonomic design, air conditioning, lighting systems, centralized lubrication, and various winch and hook options to suit operational demands.

The crane’s compact overall dimensions (12,590 mm length, 2,990 mm width, and 3,680 mm height) make it suitable for urban and industrial projects, while the extensive load charts and flexible outrigger configurations enable safe and efficient lifting in various site conditions. The SR-700L balances strength, reach, and ease of operation, making it a strong contender in the 70-ton rough terrain class.