Tadano TR-250M-5

The Tadano TR-250M-5 is a high-performance 25-ton rough terrain crane designed for flexible, compact lifting operations in construction and industrial environments. Built for stability and ease of maneuvering, the crane features a fully hydraulic, 4-section boom extending from 9.5 meters to 30.5 meters, and a boom extension through a double-acting hydraulic cylinder. A jib of 8.0 to 13.0 meters is also available, with quick-setup features and a non-stage hydraulic offset system offering 0° to 45° adjustment.

This crane offers a maximum lifting height of 31.3 meters with the boom and 44.2 meters with the jib, and a maximum working radius of 28.0 meters (boom) and 35.0 meters (jib). Lifting is handled through twin winches (main and auxiliary), each offering a single line speed of 120 m/min (4th layer). The boom is elevated via a double-acting hydraulic cylinder with a boom elevation angle of 0°–83°, reaching full elevation in 43 seconds. Swinging is facilitated by a hydraulic motor with a planetary gear reducer, providing 360° continuous rotation and a swing speed of 3.0 rpm.

The TR-250M-5 is powered by a Mitsubishi 6D16, 6-cylinder, turbocharged, water-cooled diesel engine, producing 220 PS at 2800 rpm and maximum torque of 65.0 kg·m at 1600 rpm. The transmission features 3 forward and 1 reverse speed ranges, with automatic/manual mode and a powershift system for smooth gear changes. The crane offers a 2-wheel and 4-wheel drive switchable mode, with fully floating front and rear axles and a hydraulic power steering system, including a reverse correction mechanism.

The crane’s suspension includes leaf springs, and braking is supported by hydro-pneumatic service brakes, internal expanding shoe parking brakes, and a hydrodynamic auxiliary retarder system. Outriggers are a fully hydraulic X-type design, with three extension width options: 6.3 m (fully extended), 5.0 m (mid), and 3.6 m (minimum). The maximum outrigger load is 26.7 tonnes.

Hydraulic performance is powered by 2 variable piston pumps and 2 gear pumps, feeding a total hydraulic oil tank capacity of 380 liters. The crane supports simultaneous four-motion operations, controlled via hydraulic pilot valve systems. Safety is addressed with devices like the Automatic Moment Limiter (AML), anti-overwind systems, slew and swing locks, counterbalance valves, winch drum locks, and multi-display load indicators.

The crane structure includes a welded box frame, and the cab is designed for two-man operation, with full visibility, ergonomic seating, and features such as air conditioning (heat pump type), a tactile winch drum indicator, and optional TV monitors for winch operation.

In terms of size and mobility, the TR-250M-5 measures 11,120 mm in length, 2,620 mm in width, and 3,480 mm in height, with a wheelbase of 3,450 mm. The crane has a gross weight of 26,400 kg, and offers a maximum travel speed of 49 km/h, gradeability of 60% (tanθ = 0.6), and a minimum turning radius of 5.3 m (4-wheel steering) or 9.0 m (2-wheel steering)