The MS series (Mid-Size) Clamshells weigh less than the HD machines but provide greater rigidity than the NB machines. The series is comprised of 12 standard models covering a range of 4.125 in (104.8 mm) to 48.25 in (1225.6 mm) OD. The machines within the MS series use a patented fully adjustable heavy duty bearing design which provides greater serviceability and increased life.
The split frame design of the MS clamshell allows for installation of the machine at any point along a pipeline. These portable split frame machines accept a wide range of accessories to increase performance and expand capabilities. Accessories for the Hydratight clamshells include sever slides, axial feed, single point, counterbore and swivel head modules.
In addition to the bolt-on options Hydratight also offers a full range of in-house designed and manufactured bits as well as several different drive options including hydraulic, pneumatic and electric.