Jinan PLK Machinery Co.,Ltd is one of the most reliable manufacturers and suppliers of 4 ton low clearance spider crane for basement, tunnel and underground garage lifting in China. Please feel free to buy high quality 4 ton low clearance spider crane for basement, tunnel and underground garage lifting at competitive price from our factory. Contact us for more details.
Unlike regular mini cranes with tall upright booms that can't maneuver in low underground spaces, this 4-ton crawler crane reworks the whole boom folding layout to finish full telescoping and luffing movements within limited vertical clearance. Each hydraulic outrigger adjusts height separately to level the unit on sloped garage ground with uneven concrete layers. Operators can switch to 380V electric drive fully underground to avoid smoke buildup in sealed tunnels and parking lots. The wide rubber crawler surface evenly disperses machine weight so finished epoxy and paint surfaces won't get scuffed during long-term equipment maintenance work. It's widely adopted for underground ventilation fans, fire pipeline layout and electrical control cabinet assembly in civil air defense, underground mall and metro renovation projects.
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