1. Sturdy Construction: Made of FC-25 high-tension cast iron and processed through heat     treatment, the unit is durable. 2. Steady Feed Motion:The square rail slide cast as a whole with frame to assure that     jumping and vibration will not happen during thread-rolling process. 3. Powerful Rolliing Pressure:Hydraulic drive offers a wide rolling capacity. 4. Fixed Length and Through Feed Available:Equipped with time meter for working time     adjustment. 5. Perfect Transmission:Heat treated and thread ground worm matches with phosphor     bronze worm gear provides stable transmission. 6. According to workpiece shape, center supporters can be equipped at both ends during     thread-rolling process to modify the concentricity of rolled workpieces. 7. Specially suitable for the processing of long-length screws, Acme screws, ball screws,     machine parts, hardware tools, parts for motorcycles and automobiles as well as for     metal-pipe thread rolling process.   VARIOUS THREADED. WORKPIECES : CAPACITY \ MODEL JDY-30 Diameter range of threads rolled 6Ø ~30Ø mm Range of pitch rolled 1.0 p ~ 3.0 p Max. length of thread rolled in feed and thru feed both available Speeds of dies 18 x 28 x 40 x 55 rpm Max. pitch diameter of cylindrices dies 148 mm Bore diameter of cylindrical dies 54 mm Width of cylindrical dies 70 mm Max. center distance of die-spindles 175 mm Min. center distance of die-spindles 120 mm Height from table surface to die-spindle 130 mm Output ( pcs/min ) 4 ~ 20 Machine motor 5 HP Hydraulic motor 5 HP Rolling pressure 18 TONS Net weight ( Approx. ) 1500 kgs Gross weight ( Approx. ) 1700 kgs Overall dimensions. ( L x W x H ) 1720 x 1260 x 1220 mm Shipping measurement ( L x W x H ) 1760 x 1300 x 1400 mm