Kato SR-500LX Load Chart PDF + Specifications

The Kato SR-500LX represents a major evolution from the earlier SR-500L. While maintaining the same maximum rated lifting capacity of 51 tonnes, Kato redesigned the upper structure with a new five-section boom system extending from 10.8 m to 42.0 m. This provided a substantial increase in reach compared with the previous 35.0 m boom, allowing the crane to undertake a wider range of construction, industrial maintenance, petrochemical, infrastructure, and plant installation projects. The longer boom also increased maximum lifting height to 43.2 m, while the jib system extends the maximum hook height to 57.1 m.

The crane achieves its maximum capacity of 51,000 kg at a 2.5 m working radius using the shortest 10.8 m boom configuration. Intermediate boom lengths include 14.7 m, 18.6 m, 26.4 m, 34.2 m, 38.1 m and the full 42.0 m extension. At full boom length, the crane can still lift 8.0 tonnes at an 11.0 m radius, demonstrating the strong structural performance of the boom design. The boom uses a round-shaped, five-section hydraulically telescopic arrangement in which the third, fourth and fifth sections telescope simultaneously, providing smooth boom extension and improved rigidity.

A notable feature of the SR-500LX is its hydraulically telescoping two-section Smart Luffing jib. The jib extends from 9.4 m to 13.7 m and can be offset hydraulically from 5° to 60°, offering considerably more flexibility than conventional manually offset swing-away jibs. Maximum lifting capacities are rated at 4.2 tonnes on the 9.4 m jib and 3.0 tonnes on the 13.7 m jib, while a 5.0-tonne rooster sheave is also available for single-line lifting duties.

Lifting performance is supported by high-capacity winches driven through planetary reduction gearboxes. The main hoist achieves a maximum rope speed of 117 m/min while the auxiliary winch reaches 110 m/min. High-speed lowering functions increase rope speeds to 154 m/min and 145 m/min respectively. Boom derricking from 0° to 84° requires approximately 54 seconds, and full boom extension from 10.8 m to 42.0 m takes approximately 108 seconds. Slewing is powered through a hydraulic motor and planetary reducer, providing a maximum slewing speed of 2.4 rpm.

The SR-500LX is mounted on a two-axle rough terrain carrier measuring 12.76 m in length and 2.90 m in width. The crane travels on large 505/95 R25 tires and utilizes a selectable 4×2 or 4×4 drive system. Steering is available in both two-wheel and four-wheel modes, producing a minimum turning radius of only 6.7 m in four-wheel steering configuration. Maximum road speed is 45 km/h and gradeability reaches 52%, making the crane well suited for movement between job locations and operation on uneven terrain.

Power is supplied by a Mitsubishi 6M60-TL turbocharged and intercooled six-cylinder diesel engine with a displacement of 7.545 litres. The engine develops 200 kW (268 hp) at 2,600 rpm and generates a maximum torque of 785 Nm at 1,400 rpm. The powertrain consists of a full automatic transmission with four forward and one reverse gear, coupled with a lock-up torque converter for improved efficiency during road travel and crane operations.

Kato equipped the SR-500LX with its latest ACS (Automatic Crane System), incorporating a voice alarm system, electronic load monitoring, working range limitation, slewing automatic stop, outrigger status detection, over-hoist prevention, hydraulic safety valves, winch holding valves, electronic level detection and numerous additional safety functions. An ACS outside indicator with LED display provides clear visual information to ground personnel regarding crane operating status. The operator’s cab features four-point viscous suspension mounting, air conditioning, USB charging ports, LED lighting, power windows, multiple camera systems and K-COR (Kato Crane Operation Recorder) for operational data recording and fleet management.

Compared with the SR-500L, the SR-500LX offers a significantly longer main boom, greater lifting height, a more advanced hydraulically telescoping luffing jib system, a heavier gross vehicle weight of approximately 37.1 tonnes, and a more modern operator environment. These enhancements position the SR-500LX as one of the most versatile rough terrain cranes in Kato’s 50-tonne class.