YUASA Co.,Ltd

We have the equipment to meet all kinds of customer needs, and we can handle large crankshafts (up to 4 meters).

Small volume crankshaft

Small volume crankshaft

We have the equipment to meet all kinds of customer needs,
and we can handle large crankshafts (up to 4 meters).

The highest technology for all types of crankshafts

The highest technology for all types of crankshafts

We provide the highest quality crankshafts with the highest technology that we have developed for
all kinds of crankshafts from automobiles, outboards , construction machinery, agricultural machine,
and light aircraft of famous Japanese manufacturers.
As long as you provide us with the machining drawing, you can order from one crankshaft to the finished product.

  • Small volume crankshaft processing by Yuasa Features and Strengths

small-lot production

 We can also handle small-lot production from a single unit.


No matter how small the quantity, we can handle the prototypes that are requiredin the development field, where trial and error is constantly being conducted fornew projects, or the production of test pieces for the launch of a new productionline.

  • Prototype(forged , round bars )
  • Service parts
  • Small spots
  • Blank processed
  • Development project
  • Test piece processing for line start-up

round bar

 It can be machined from a round bar.


For example, if there is a sudden need for a replacement part, but the forging diehas already been scrapped and cannot be rebuilt, we can cut it from the round barand process it to the final product. We can also handle small quantities and shortdelivery times.

  • Service parts
  • After parts

up to 4,000 mm

 Capable of machining axes up to 4,000 mm in length.


Yuasa has equipment capable of machining up to 4,000mm, and can process anyshaft shape. The longer the length, the higher the accuracy required, and we canachieve this with our extensive know-how.

  • Crankshaft for power generator+C48
  • Crankshaft for power generator

  • Please leave a wide variety of small quantities of spare parts to us.

Please leave a wide variety of small quantities of spare parts to us.
Troublesome inventory management of spare parts. I am worried about rusting and loss due to securing storage space and long-term storage.
Please leave such high-mix low-volume spare parts to us.
In addition to our production, we will carefully store forged materials and finished inventory in the three-dimensional automated warehouse and deliver them to the designated place at the desired date and time.
We also respond to requests such as monthly inventory reports and regular rust prevention treatment.
In addition, when shipping products, we also propose packaging such as individual cardboard packaging and batch delivery by palletina.

  • Processing equipment

Complex lathe

  • Complex lathe
A multi-function machining device for crankshaft journal lating, milling, and oil hole machining.

NC lathe

  • NC lathe
Device for crankshaft pin lathing.

Pin grinding machine

  • Pin grinding machine
Device for crankshaft pin gringding. This device conducts auto-bit(tracking) processing that is fully computer controlled.

  • Machining sample

  • For races
  • For motorcycle
  • Tune-up crankshaft for automobile
  • For light aircraft

  • Free estimate and consultation

Bringing YUASA micron-order quality to you. Please contact us any time.