CHUO KAKOHKI

CHUO KAKOHKI is a company that offers vibratory mills for fine grinding of metals and ceramics. It introduced Japan’s first vibratory mill in 1961 and now holds more than 80% of the market share in Japan^*.

This article outlines the features and product specifications of CHUO KAKOHKI’s vibratory mills.

Features and Strengths
of CHUO KAKOHKI
Vibratory Mills

Source: CHUOKAKOHKI Official Website - CD-Type Vibratory Mill
https://www.chuokakohki.co.jp/mill.html

Fine Grinding Technology
for Reducing
Difficult-to-Grind
Materials
to the
Submicron Range

The powerful high-G impact force generated by its unique low-frequency, high-amplitude design enables fine grinding of difficult-to-grind materials such as hard SiC down to the submicron range. Strong kinetic energy can induce mechanochemical effects and promote mechanical alloying. CHUO KAKOHKI’s vibratory mills are suitable for process development involving electronic components and semiconductor materials, as well as for advanced industries that require highly refined particle size control.

A Broad Lineup
That Supports
a Smooth Transition
to Mass Production

CHUO KAKOHKI offers a wide range of equipment suited to each production phase, from small test units to large continuous models with capacities of up to 792.5 gal (3,000 L), as well as automatic reversing models that reduce manual labor. This lineup can smoothly transfer media and lining conditions established at the PoC stage to larger machines, while stably reproducing the precise particle size distribution achieved in the laboratory in mass-production-scale processes.

Basic Information:
CHUO KAKOHKI
Vibratory Mills

Maintenance Features

The CD type features a unitized vibrator, so even if the bearing is damaged, operation can resume simply by replacing it with a spare bearing unit.
The FV and FVR types also feature a unitized drive section, making maintenance easy. In particular, batch types such as the FV type have no protrusions inside the grinding cylinder, allowing smooth lining installation and replacement. This helps reduce parts replacement time and minimize factory downtime.

Grinding Examples

No specific grinding examples using vibratory mills were listed on the official website.

Recommended for
Companies Seeking
Vibratory Mills for
Difficult-to-Grind Materials

CHUO KAKOHKI’s vibratory mills offer strong fine grinding capability through high-G impact force, along with customization options and a broad product lineup. Its vibratory mills offer high reliability, especially in fine grinding of hard materials such as metals and fine ceramics. CHUO KAKOHKI is a strong option for companies seeking customization suited to their materials.

Product Lineup

CD-Type Vibratory Mill (Continuous)

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

This continuous model is suitable for mass production. This model continuously processes raw materials using upper and lower grinding cylinders arranged in two stages. The grinding cylinders are removable, making replacement easy.

CD-Type Vibratory Mill Specifications

FVR-Type Vibratory Mill (Batch / Reverse-Discharge)

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

This model adds a reverse-discharge function to the batch-type FV model. By reversing the grinding cylinder and discharging the raw material while vibrating, the mill can eliminate the need for manual scraping.

FVR-Type Vibratory Mill Specifications

FV-Type Vibratory Mill (Batch / Easy Cleaning)

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

The FV-Type features a design with drive units positioned on both sides. Because there are no internal structures inside the cylinder, making cleaning easy, it is suitable for multi-product production. Its capacity is up to 422.7 gal (1,600 L).

FV-Type Vibratory Mill Specifications

MB-Type Vibratory Mill (Batch / Annular
Cross-Section)

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

This model has an annular cross-section with a spacer pipe running through the center of the grinding cylinder. The grinding cylinder is reversed during discharge.

MB-Type Vibratory Mill Specifications

Small Vibratory Mill
for Testing and Research

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

A test model with a replaceable pot system for small-volume grinding of 0.26 gal (1 L) or less. This model can handle fine grinding of research raw materials, condition setting during development, and small-scale production, supporting the transition to mass production.

Small Vibratory Mill for Testing
and Research Specifications

Company Overview:
CHUO KAKOHKI

Source: CHUO KAKOHKI Official Website
https://www.chuokakohki.co.jp/mill.html

CHUO KAKOHKI has developed and manufactured vibratory mills, vibrating dryers, and related equipment since its establishment in 1950. It serves customer needs through an integrated system covering everything from design to maintenance, centered at its base in Toyoake, Aichi Prefecture.