N-RSD (Metric Threads) | New Rolling Dies | YAMAWA

Product Features
● The new N-RSD rolling dies are capable of producing high precision screw threads through material deformation while producing
an excellent surface finish without creating chips.
● The N-RSD has made major improvements in thread rolling efficiency starting with sizes P=0.5 and offers a dramatic
improvement in tool life that could not be resolved with conventional rolling dies.
● The lower forming load on the dies chamfer at the starting point is greatly reduced compared to conventional products, achieving
longer tool life.
● Ideal for small quantity thread rolling on various kinds of screw threads. Ideal for small diameter and long threads that are difficult
to handle with thread rollers.
● YAMAWA recommends using automatic machines and lathes, which allow machining with workpiece rotation, with the N-RSD
thread rolling dies.

Pitch diameter tolerance class comparison chart of die class (R class) and an external thread class.
Comparative example with M6×1

● Die class: Class R is the pitch    diameter tolerance zone for    inspection of external threads    machined with rolling dies. ● External thread surface finish    accuracy may differ slightly from    inspection external thread    specification depending on the type    of workpiece and processing    conditions.