The paper roll clamps are used for operations to two different paper roll of transporting and piling effectively, safely and without any damages on paper rolls, at the meanwhile, they could be rotating 360 degrees continually. Thus, it is convenient for operations of both horizontal and vertical. This series of products could be widely applied in any transportations and piles of paper rolls which are from paper making industry, carton, packaging, printing, and any operations in ports as well. ★To design with high strength and test highly in cycle times to meet the sequent and high strength operations required from customers. ★To design the arms of clamps separately that ensures the operations of transporting and piling is on the right positions while operating. ★Smooth surface of long arms and reducing thickness of arms technically make it easier to move paper rolls into small space between rolls and avoid any damages on surface of paper rolls. ★To equip with roughening surface to ensure strong enough to hold paper rolls and the replaceable of wear resisting parts to reduce cost of maintenance on holding parts. At the meantime, the additional parts attached onto the arms to prevent from damages on arms while operating vertically. ★The cone-way valve with holding pressure on the cylinder ensures operation safely, and reduces any damages on paper rolls caused by the malfunction of hydraulic components or any problem with system. On the other hand, the checking point on hydraulic cylinder makes easier for daily maintenance and any oil level checking. ★The combination of arms which applied high strength material externs working life of shaft housings without lubricating timely, this avoids shaft broken by wearing or lack of lubricants. ★The bidirectional locking valve on hydraulic motor ensures 360 degree rotation and be locked on any positions. ★Clamp with short arms fixed: the arms of clamp would be open completely when the diameter of paper roll is close to max dimension of opening arms. The thinnest part of the edge could be inserted into paper roll and hold efficiently. ★Clamp with adjustable short arms: applied for different size of paper rolls by adjusting position of arms and used for small diameter of rolls as well. ★ Clamp with split arms: used for picking two different sizes of rolls at the same time safely and easily. ★Holding part with complete casted: used for any paper rolls without special required, standard configuration. ★Holding part with rubbers: used for operation of soft holding required. ★ Holding part with addition welded: used for complicated rolls such as recycle paper rolls. ★Holding part with polyurethane: used for rolls without packaging. ★Holding part with simple radian: used for holding soft paper rolls.