2008013438Kim Jeong Geon

NARA CORPRATION’S major product is COUPLING , TURNING GEAR, GEAR BOX

These products are used various fields

Wind solution , fluid drivemarine engine , Flexible coupling

First.

Circle material Round bar cutting

According to drawings using CNC , lathe Working Rough glinding ( 2 ~3mm gives free) -Used When a large machining allowance -Routh glinding used roughly pare

This step is heat treatment

Standard is normalizing

After heat treatment

2~3days leaving alone

(To remove heat treatment Stress relief)

According to drawings using CNC , lathe Working Finishing

Finising used Minutely pare

Using various cutters that cut the teeth of gear