Learn from the basics! What is a grinding machine?

This explains the differences between free grinding machines and machine grinding machines, as well as the types of grinding machines and grinding processes. *Booklets are being distributed.*

last updated Jan 09, 2025

What is thin-walled machining? Achieving high precision processing! Solving deformation caused by gripping.

A highly versatile 2-roll, 1-shoe spindle has been newly developed by applying the method used for inner surface grinding of components such as ball bearings. *Processing examples available.

last updated Dec 10, 2024

What is a spindle motor? An explanation of the required performance and characteristics! *Materials are currently being distributed.

Contributing to the reduction of environmental impact: Achieving high output, high rigidity, high precision, and noise reduction! Introducing our company's initiatives on spindle motors from the basics.

last updated Sep 08, 2025

[Processing Example] Ring Gauge CNC Internal Grinding Machine STG-6N

Improvement of product shape accuracy and reduction of cycle time are the background for the introduction! We will also introduce the effects of the implementation.

last updated Dec 10, 2024

[Processing Example] Collet CNC Internal Grinding Machine STG-6N

A case where the extensive rework within the factory significantly reduced the customer's work time, which had been a source of frustration.

last updated Dec 10, 2024

[Processing Example] Gear CNC Internal Grinding Machine STG-6N

We will introduce a case study of gear processing that has reduced processing time by 80% compared to before implementation!

last updated Dec 10, 2024

[Processing Example] Sleeve <Difficult-to-Cut Material> CNC Internal Surface Grinding Machine STG-3N

We will introduce examples of sleeve processing, which has reduced processing time by 80% compared to before implementation!

last updated Dec 10, 2024

[Processing Example] Die <Difficult-to-Cut Material> CNC Internal Grinding Machine STG-3N

As a result of the introduction, processing time reduced by 80%! Introducing a case study of die processing featuring difficult-to-cut materials.

last updated Dec 10, 2024

[Processing Example] Guide Bush <Flange on Outer Diameter> CNC Internal Grinding Machine

Surface roughness should be below Ra0.2μm! Here are examples of machining guide bushes made of SUJ2 material.

last updated Dec 10, 2024

[Processing Example] Guide Bush <Long Hole> CNC Internal Grinding Machine STG-6N

Compared to before the introduction, processing time reduced by 35%! Introducing a case study of mold processing featuring long holes.

last updated Dec 10, 2024

[Processing Example] Thin-Walled Workpiece CNC Internal Grinding Machine STG-6N

Applying the technology cultivated in mass production of precision parts to general-purpose internal grinding machines! Introducing our processing examples.

last updated Dec 10, 2024

[Processing Example] Die General-purpose Grinding Machine CNC Internal Grinding Machine STG-6N

Achieving roundness of 0.8μm or less! Here are examples of cases where we proposed our spindles.

last updated Dec 10, 2024

[Processing Example] Alumina General-purpose Grinding Machine CNC Internal Grinding Machine STG-3N

Introduction of a machining case where processing time was reduced by 50% and cylindricity was improved.

last updated Dec 10, 2024

[Processing Example] Magnet General-purpose Grinding Machine CNC Internal Grinding Machine STG-3N

Shortening Cycle Time! Introducing Examples of Processing Neodymium Magnets

last updated Dec 10, 2024

Spindle Motor "SSPG Series" [Compatible with Ultra-Precision Machining]

The spindle motor "SSPG Series," developed to meet the needs of ultra-precision machining, pursues the highest level of accuracy and versatility!

last updated Dec 10, 2024

[Case Study] Seiko Instruments' Internal Grinding Machine Solves Challenges of <Micro Holes>

Introducing examples of problem-solving achieved through high-speed spindles and machining know-how cultivated over many years of experience.

last updated Dec 10, 2024

[Case Study] Seiko Instruments' Internal Grinding Machine Solves Challenges <Precision Machined Parts>

We will introduce a case that enabled a reduction in lap processing time by improving surface roughness!

last updated Dec 10, 2024

[Case Study] Seiko Instruments' Internal Grinding Machine Solves Challenges for Small Components

Introducing a case where the adoption of a high-frequency spindle resolved difficulties in ensuring precision.

last updated Dec 10, 2024

Features of Seiko Instruments' internal grinding machine

Achieve equipment sizes that match the size of the workpiece! It is highly versatile and has excellent scalability.

last updated Dec 10, 2024

The performance of internal grinding machines is being sought for improvement across various industries.

At Seiko Instruments, we have provided solutions by addressing our customers' needs.

last updated Dec 10, 2024

There is a demand for high-precision, high-efficiency, and space-saving grinding machines.

It is possible to alleviate anxiety! Development of grinding machines that meet your needs is underway.

last updated Dec 10, 2024

Types of Grinding Machines

The surface grinding machine consists of a table and a grinding wheel! It affects the shape of the workpiece and the precision during processing.

last updated Dec 10, 2024

【Basic Knowledge】What is a Grinding Machine?

Processing while shaving off the surface! It slowly shaves off a little at a time, achieving high precision.

last updated Dec 10, 2024

Features of Seiko Instruments' high-precision high-frequency spindle.

Adopted for internal grinding machines! Achieving improved development speed and product reliability.

last updated Dec 10, 2024

Performance required for spindle motors

There is a demand for versatility that can be applied to various equipment and high environmental performance!

last updated Dec 10, 2024

The spindle motor is a rotating drive device with a simple structure.

You can choose products tailored to your needs! We offer a variety of lineups.

last updated Dec 10, 2024

【Small-diameter machining & productivity improvement】General-purpose CNC internal grinding machine *Test machining available

We offer two models: the STG-3NX, which can achieve a minimum inner diameter finish of 0.3mm, and the STG-6N, which accommodates inner diameters up to 100mm. *Short delivery times available.

last updated Dec 10, 2024

New Product: Compact Universal Internal Grinding Machine 'STG-3NX'

Compact universal internal grinding machine 'STG-3NX' that achieves high precision and high productivity. *Test processing available.

last updated Sep 08, 2025

Improvement of production efficiency through reduced processing time - CNC internal grinding machine *Test processing available

We will introduce a case where the introduction of our internal grinding machine has achieved a reduction in processing time and an improvement in accuracy!

last updated Dec 10, 2024

Energy-saving × Space-saving High-Frequency Spindle

High precision with P2 grade bearings! Equipped with SII internal grinding machine, it has a wealth of proven results.

last updated Dec 10, 2024