Product description Features: *High strength and abrasion resistant sliding guiding rails and to minimize abrasion and deformation of spare parts through more than two times of stress annealing. *High speed, low noise, stable operation, compact structure. *Double guiding rails to increase stability and repeatability precision. *Guiding rails are quenched or under intensification treatment on the surface. *Adjustable cam double rollers design to increase stability and reduce impact. *One way bearing materials feeding structure to prevent output of materials in wrong dimension. *Selection of 2 speeds. *Wedge-iron design in many moving parts for clearance adjusting, to ensure movement precision.