Needle Bearing - Stainless Steel Inside Diameter 450mm Outside Diameter 500mm Thickness 20mm Double Row High Precision Oil Lubrication Load Capacity 50kg Limited Speed 50m/m Sealed

Shandong Tongri Power Science and Technology Co.Ltd is a professional manufacturer for digit-control machine tool and paper-product equipment. In 1990 we began to manufacture textile bobbin and spiral paper tube with Hao Li Factory from Taiwan in the form of joint venture. In 1992 we developed semi-automatic conical and spiral paper tube production line which is sold throughout the whole country with our advanced technology processing method excellent product quality and high-level service. In 2006 we developed QZD-68 automatic conical paper tube production line after the absorption of German and South Korean technology. The new machine is coming with mechatronics to achieve low-labor low-consumption high-efficiency high-quality paper tube production. In 2017 we developed all new automatic conical paper tube production line-TRZ-2017 after leaning from advanced experience and improving our current model. The efficiency has been improved to a whole new level. We have almost 30 years machinery manufacturing and processing experience. We have nearly 20 years paper tube and bobbin manufacturing experience. WeAcA A ll provide you excellent package of paper tube production line and extensive experience.