The steering dolly trailer or steerable dolly trailer are the efficient supplementary trailer, which are widely used for long beam and heavy duty cargo when low bed trailers are not suitable to transport. meanwhile, with help of turntable(bolster), steering dolly trailer or steerable dolly trailer could make the transportation with minimum turning radius. They are also called precast concrete beam trailer or section trailer.
Weight distribution of semi low-bed trailer normally is half-half, 50% of total weight is on top of rear axles (rear axles could be up to 16 tires), other 50% is on top of prime mover. So, if cargo is too heavy, prime mover will be in overload condition. Then, steering dolly trailer or steerable dolly trailer are designed to bear more weight under king pin of gooseneck to relieve pressure on tractor, to make sure every part are in more safe condition during transport process.
Main Functions of Steerable Dolly Trailer:Decrease turning radius
| Features of Steering Dolly | Normally the dolly has 1 axle to 3 axles. |
| Optional power pack make dolly manually steerable. |
