Integrated workflow

If you like the price and quality of forged rings but have concerns about timely delivery, your worries are over!

Manufacturing process


We perform each phase of manufacturing process in our integrated workflow, from forging and heat treatment to lathe turning and timely delivery. Our unique production management system ensures timely delivery of all orders.

Product Process

All processes are performed on site.

Cutting process

Cutting process

We cut steel, stainless steel, and other materials to the necessary size.

Forging process

Forging process

Making accurate shape of ring.
Monthly production capacity of 3.500 tons or roughly 480,000 pieces.

Heat treatment Process

Heat treatment Process

Heat treatment to lathe easily.

Shot blasting process

Shot blasting process

Making clean surface by getting rid of surface oxidized membrane.
(Removing oxidized surface layer.)

At right: Before shot peening
At left: After shot peening
Roughly 1,000-ton production capacity

Tsuttkiri (Ring cutting) process

Tsuttkiri (Ring cutting) process

Cutting to the requested wide of product.
Roughly 20,000-cut-per-month production capacity

Lathing process

Lathing process

Lathed by an up-to-date NC lathe machine.
Roughly 170,000-piece production capacity

Quenching & Tempering

Quenching & Tempering

It distorts, and the transformation is prevented.

Roughly 60,000-piece production capacity

Polishing・Assembly process

Polishing・Assembly process

We perform end, outer diameter and inner diameter grinding. After grinding, we integrate rollers and spacers to make a finished product.

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