Precision Grinders

Ultimate technology for top precision grinding and finishing

Koyo is a comprehensive manufacturer of high-precision grinding machines that are ideal for the mass production of precision components in various fields such as automotive, electronics, energy, appliance, medical and construction. Koyo’s vast line-up of grinding machines are capable of handling surface, centerless and special types of applications to meet all your grinding needs. Through mechanical and electrical engineering expertise, Koyo continues to re-examine the essential factors in grinding technology in order to improve performance and meet the demands of our ever-changing market. These factors include: precision, efficiency, rigidity, stability, automation, and more. Our machines are custom built to fit into your production line in accordance with the application you are using it for.


Koyo remains a world leader in centerless grinder technology by delivering reliability, high accuracy and improved grinding efficiency.

30/45/60 Series ►
KC Series ►


Koyo provides surface grinding solutions that accommodate single or double-sided grinding applications using vertical or horizontal spindles in single or double disc configurations.

R Series ►
HD Series ►
KVD Series ►

Special Purpose

Koyo can meet your special grinding needs with O.D. Grinders, I.D. Grinders, Shoe Type Grinders, Internal Groove Grinders and more.

VG Series ►
Shoe Type Centerless ►
ID Grinders ►
MG Series ►
Wafer Grinder ►
Roller Drive End Face Grinder ►
Internal Groove ►