Sunward SWTC5C

Sunward’s SWTC5 and SWTC5C crawler cranes are small yet robust machines, each offering a maximum lifting capacity of 5 tonnes and engineered for confined construction sites, municipal works, and environments requiring short-distance load travel. Both cranes share nearly identical dimensions and specifications, featuring a compact footprint of 5130 mm in length, 2320 mm in width, and a height of 2795 mm. Their undercarriage systems are fitted with 450 mm wide tracks and a chassis width of 2320 mm, offering a stable base with minimal ground pressure of 50.8 kPa.

These cranes feature five-section telescopic booms made from high-strength steel, extending from a base length of 4.63 meters to a maximum length of 15.63 meters. The corresponding lifting heights range from 5.3 meters with the basic boom to 16.13 meters when fully extended. The lifting torque of the basic boom is rated at 105 kN·m, while the fully extended boom achieves up to 60 kN·m. Luffing angles range from -2° to 80°, and both models feature rapid boom operation, with luffing times of 11/9 seconds (up/down) and telescoping times of 23/39 seconds (extend/retract). Slewing speed is 3 rpm, and the single rope hoisting speed reaches up to 110 m/min.

Though similar in construction, the key distinction lies in the engine models and output. The SWTC5 is powered by a Yanmar 4TNV98-ZSSU engine rated at 43.4 kW @ 2200 rpm, while the SWTC5C is equipped with a Yanmar 4TNV98C-SSU delivering a slightly higher output of 46.2 kW @ 2200 rpm. Both engines are water-cooled and turbocharged, with 3.32 L displacement, and each supports a 125-liter fuel tank for extended operation durations.

Designed with operator safety and comfort in mind, both models come equipped with a reinforced cab featuring anti-roll protection and CAN bus-based control systems. These systems include load moment limitation, anti-overwinding protection, and slew/boom movement constraints, all conforming to EN13000 standards. A micro-motion function enhances precision during lifting and movement, and a self-lifting support shovel increases operational stability on uneven ground.

The cranes are also capable of limited load travel when configured appropriately. Traveling with load is permissible under controlled conditions with restrictions on boom length and range, as detailed in the lifting charts on page 4. For instance, with the boom at 7.38 meters, static lifting capacities reach up to 3800 kg, while traveling capacities must remain below 1900 kg. Longer boom configurations restrict traveling due to stability concerns.

Thanks to their minimal tail swing radius and compact structure, the SWTC5 and SWTC5C are ideal for narrow job sites and interior construction. Additionally, they offer a maximum gradeability of 36.4%, allowing them to operate effectively on uneven or inclined terrain. The cranes can be equipped with a double-line hook system for underground lifts up to 56 meters deep, making them versatile for confined or vertical-access environments.

In summary, the SWTC5 and SWTC5C are compact, rugged, and intelligent lifting solutions tailored for projects where maneuverability, safety, and lifting precision are paramount. Their balance of power and flexibility make them a reliable choice in civil, utility, and industrial applications.