Kato KRM-13HM-F2 (MR-130RfiiM) Load Chart PDF + Specifications

The MR-130RfIIM was introduced as a modernized member of Kato’s Cityrange Superboom family, carrying the “Premium Jib” designation thanks to its hydraulically adjustable power jib system. Unlike its predecessor MR-130RfII, which was rated at 13 tonnes, the MR-130RfIIM falls into Japan’s 4.9-ton lifting class, allowing operation under the Small Mobile Crane category while retaining many features found on larger rough terrain cranes. The crane is designated KRM-13HM-F2 and is available with either H-type or X-type hydraulic outriggers.

The crane is equipped with a six-section box-type hydraulic telescopic boom extending from 5.3 m to 24.0 m. The boom utilizes synchronized extension, with sections two and three extending together followed by sections four, five, and six. Maximum rated lifting capacity is 4.9 tonnes at a 4.0 m radius with the 5.3 m boom. The same 4.9-tonne rating is maintained through boom lengths of 9.04 m, 12.78 m, and 16.52 m under specified radii. At longer boom configurations, capacities remain substantial, including 4.7 tonnes on the 20.26 m boom and 3.2 tonnes at a 5.5 m radius with the fully extended 24.0 m boom. A 1.8-tonne rooster sheave is also provided for single-line lifting operations.

One of the most important features of the MR-130RfIIM is its two-stage hydraulically offset power jib. Available in lengths of 3.65 m and 5.6 m, the jib can be offset continuously between 5° and 60° using hydraulic cylinders. This allows operators to position loads around structures, beneath roofs, or over obstacles without repositioning the crane. Maximum jib capacities are rated at 1.6 tonnes for the 3.65 m jib and 1.0 tonne for the 5.6 m jib. When combined with the fully extended main boom, the crane achieves a maximum lifting height of 30.4 m, while maximum boom tip height reaches 24.8 m.

The lifting system utilizes dual independent hydraulic winches driven through planetary reduction gearboxes with integrated negative brakes. Main winch rope speed reaches 118 m/min, while the auxiliary winch achieves 106 m/min. Hook speeds are particularly impressive for a crane of this size, reaching 29.5 m/min on the main hook with four-part reeving and 106 m/min on the auxiliary line. A high-speed lowering function allows lowering speeds up to 160 m/min under no-load conditions, improving productivity during repetitive lifting cycles.

Boom elevation ranges from -7.5° to 82°, allowing both below-grade and steep-angle lifting applications. Full boom elevation from minimum to maximum angle requires approximately 29 seconds, while extending the complete 18.7 m telescopic stroke requires approximately 64 seconds. Slewing is performed by a hydraulic motor driving a planetary gearbox and bearing-supported swing circle. Maximum slewing speed reaches 2.4 rpm, while the rear swing radius is limited to only 1.6 m, a significant advantage in confined jobsites.

The outrigger system is available in either fully hydraulic H-type or X-type configurations. Maximum outrigger spread measures 4.75 m, with intermediate positions at 4.3 m, 3.7 m, and 2.7 m. The H-type version offers an additional minimum spread of only 1.64 m, enabling crane operation in exceptionally narrow working areas. Rated load charts are provided for each outrigger width, ensuring safe operation regardless of site constraints.

Power is supplied by a Hino J05E-UM diesel engine meeting Japan’s 2014 special vehicle emissions regulations. The water-cooled four-cylinder direct-injection turbo diesel displaces 5.123 litres and develops 129 kW (173 hp) at 2,500 rpm, while producing a maximum torque of 540 Nm at 1,600 rpm. Power is transmitted through a torque converter and automatic/manual transmission to a selectable 4×2 or 4×4 drivetrain. Maximum travel speed is 49 km/h and gradeability is rated at 57%, allowing the crane to move efficiently between jobsites and operate on challenging terrain.

A major advantage of the MR-130RfIIM is its excellent maneuverability. The hydraulic steering system offers three steering modes: front-wheel steering, rear-wheel steering, and independent four-wheel steering. This enables a minimum turning radius of only 3.92 m in four-wheel steering mode, while two-wheel steering requires 6.5 m. Such maneuverability makes the crane highly suitable for factory maintenance, utility installation, urban construction, and plant shutdown work.

Safety is centered around Kato’s ACS (Automatic Crane System), incorporating overload prevention, voice warning functions, automatic swing stop, work area limitation, automatic outrigger width detection, anti-two-block protection, hydraulic safety valves, boom and jib lowering protection systems, and automatic brake functions. Additional features include a winch monitoring camera, external ACS display, external ACS voice warning unit, LED work lights, electronic level indicator with automatic outrigger leveling assistance, crane work recorder, and Bluetooth-enabled AM/FM radio. Carrier safety systems include cameras, clearance sonar, emergency steering, steering lock systems, suspension locks, and multiple monitoring alarms.

With an overall length of 7,465 mm, width of 1,995 mm, height of 2,870 mm, wheelbase of 2,750 mm, and gross vehicle weight of 14,105 kg, the MR-130RfIIM remains one of the most compact rough terrain cranes in its class. Its combination of compact dimensions, advanced power jib system, modern diesel engine, and sophisticated safety technology makes it a versatile lifting solution for contractors working in restricted environments where mobility and flexibility are critical.