NHR250CNC is a universal type of CNC relieving lathe which is specially designed for the hob manufacturer by Nabaic Machine Tool Company. It has good rigidity, high precision, wide range of applications and convenient operability.

   This machine tool suitable for relief turning and relief grinding gear hobs with module from 1 to 12 mm, other kinds of gear cutting tools and other cutting tools which need to relieve the back of teeth.

   This machine tool is also suitable for processing kinds of parts with screw thread and special shape.

   The designed structure of this machine can not only insure the high precision of processing, but also can achieve good surface finish quality. The gear hobs relieving by this machine can steadily achieve the standard of DIN3968 or GB/T6084-2001, AA.

Maximum swing diameter of workpiece on tool post	250mm
Maximum processing module of gear hob	12mm
Center height	300mm
Distance between centers	800mm\
Maximum processing length	560mm
Maximum main shaft speed	150rpm
Number of slots	1-99
Maximum amount of relieving	16mm
Lead of the spiral flute	200 - ∞ mm
The specification and spindle speed of the wheel spindle	Ø50×200         7437rpm Ø60×224         4760rpm
Cross slide travel	120mm
Distance of the quick returning of the cross tool carriage	20mm
Dimensions of the machine	2600×1300×1936mm
Net weight	3000kg