Mitsui Seiki

Mitsui Seiki Manufacturer of ultra precise jig borers, horizontal machining centers, vertical machining centers, jig grinders, thread grinders They have to be.

Organization
Mitsui Seki (U.S.A.), Inc. employs a staff of individuals who are exceptional in their areas of expertise. The most progressive companies in the world use our lines of sophisticated machine tools. These clients employ the “best and the brightest” in such fields as aerospace and jet propulsion, commercial aviation, compressors, automotive, capital machinery, optics, mold & die, and ge

neral precision component manufacturing. First and foremost, our team is highly engineering-oriented – even our executives – as most of our customers require high-end, customized machine tool systems. It is of paramount importance that all of our personnel in direct contact with our clients understand our technology. Even more so, we must fully understand our customers’ needs from both a technical and a business standpoint. We have degreed engineers from highly regarded technical institutions to focus on even the minute details of an application and the corresponding machine and commercial solution. Likewise our service and support technicians are thoroughly and continually trained in each particular machine type and are also knowledgeable about each customer’s specific system. Often, our solutions are sophisticated, and represent a significant investment for our customers. In many cases, we provide a staff person to work on site from time of installation until the end user is completely comfortable with the day-to-day operation and functionality of the Mitsui Seiki machine, cell, or multi-machine system. Bottom line – smart people have to build and maintain the most sophisticated, precise machine tools on the planet. Our customers must have these individuals, and we are proud they are on our team.

Designed around accuracy from the ground up.From the 3-point bed construction and V-V ways to hand-scraped way surfaces,...
08/06/2026

Designed around accuracy from the ground up.

From the 3-point bed construction and V-V ways to hand-scraped way surfaces, the J350G II has been engineered to deliver reliable, ultra-repeatable accuracy for precision grinding applications.

☑️ 𝗩𝗮𝗿𝗶𝗼𝘂𝘀 𝗳𝗮𝗰𝘁𝗼𝗿𝘆 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗶𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀
☑️ 𝗖𝗼𝗺𝗽𝗮𝗰𝘁 𝗳𝗼𝗼𝘁𝗽𝗿𝗶𝗻𝘁
☑️ 𝗘𝗻𝘃𝗶𝗿𝗼𝗻𝗺𝗲𝗻𝘁𝗮𝗹𝗹𝘆 𝗰𝗼𝗻𝘀𝗰𝗶𝗼𝘂𝘀 𝗱𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗺𝗮𝗻𝘂𝗳𝗮𝗰𝘁𝘂𝗿𝗲

Take an closer look at the specs: https://bit.ly/3RTH2LG

Before a Mitsui Seiki machine leaves our Japan factory, its temperature is gradually adjusted to match the outside envir...
08/05/2026

Before a Mitsui Seiki machine leaves our Japan factory, its temperature is gradually adjusted to match the outside environment.

This helps prevent condensation from forming, even on hot, humid summer days, so every machine is ready for the next stage of its journey. 🙌

Learn more about our factory: https://bit.ly/49NiKev

GKN Aerospace is expanding its North Charlestown, New Hampshire facility with a 57,000 sq ft extension.The investment is...
08/04/2026

GKN Aerospace is expanding its North Charlestown, New Hampshire facility with a 57,000 sq ft extension.

The investment is aimed at meeting growing demand for complex aero-engine components, increasing manufacturing capacity and supporting future engine programmes.

Read the full article: https://bit.ly/4fTAtEL

The expansion will also strengthen collaboration with GKN Aerospace's Muncie, Indiana facility by combining advanced forging and precision machining capabilities to provide an integrated manufacturing solution.

We work closely with GKN, supplying our bespoke machine tools, so to see the company continuing to invest in its manufacturing footprint and future capabilities is incredibly positive.

September will be here before we know it, which means IMTS is just around the corner!As the largest manufacturing show i...
08/03/2026

September will be here before we know it, which means IMTS is just around the corner!

As the largest manufacturing show in the Western Hemisphere, IMTS brings together manufacturers, innovators and industry leaders from all around the world.

If you're planning to attend, be sure to stop by and say hello!

📍 South Building, Level 3 - Booth 338700
📅 September 14 - 19 | McCormick Place, Chicago

We'll be there to showcase the latest from Mitsui Seiki USA and look forward to welcoming you to our booth.

International Manufacturing Technology Show

07/30/2026

More than machining. A competitive advantage.

The 5-axis PJ303X is built for manufacturers looking to go beyond standard machining - delivering the reliable, repeatable precision needed for some of the world’s most demanding applications. 🙌

GE Aerospace has completed the first high-altitude, high-voltage hybrid-electric flight using a Saab 340 test aircraft p...
07/29/2026

GE Aerospace has completed the first high-altitude, high-voltage hybrid-electric flight using a Saab 340 test aircraft powered in part by a megawatt-class modified CT7 engine.

During flight testing, the aircraft successfully operated above 30,000 feet, and later completed a transatlantic journey to the Farnborough Airshow, demonstrating the hybrid-electric system's reliability, efficiency and performance.

Read the full article: https://bit.ly/3ROtOnf

The hybrid system enabled the aircraft to achieve greater altitude and range than would have been possible with a standard gas turbine alone, while also recharging its batteries during descent.

Developments like this highlight just how quickly aerospace technology continues to evolve. As a supplier of bespoke machine tools to GE Aerospace, it's fascinating to see these technologies progress from years of development to successful flight testing.

Your machine is a major investment. Keeping it performing at its best should be part of the plan. ⬇️Our Preventive Maint...
07/28/2026

Your machine is a major investment. Keeping it performing at its best should be part of the plan. ⬇️

Our Preventive Maintenance Package A provides a structured service approach, carried out by Mitsui Seiki specialists to help keep your equipment operating as intended.

It includes everything below and more: https://bit.ly/40Ulg07

07/27/2026

The HU100-TS continues to demonstrate its capability across some of the most 𝙙𝙚𝙢𝙖𝙣𝙙𝙞𝙣𝙜 industries.

➡️ 𝗠𝗮𝘅𝗶𝗺𝘂𝗺 𝗽𝗲𝗿𝗺𝗶𝘀𝘀𝗶𝗯𝗹𝗲 𝗹𝗼𝗮𝗱: 𝟮,𝟬𝟬𝟬𝗸𝗴 (𝟰,𝟰𝟬𝟬 𝗹𝗯.)
➡️ 𝗠𝗮𝘅𝗶𝗺𝘂𝗺 𝘄𝗼𝗿𝗸 𝗽𝗶𝗲𝗰𝗲 𝘀𝘄𝗶𝗻𝗴: 𝟭,𝟮𝟱𝟬𝗺𝗺 Ø (𝟰𝟵.𝟮𝟭" Ø)
➡️ 𝟭,𝟬𝟬𝟬𝗺𝗺 𝘀𝗾𝘂𝗮𝗿𝗲 (𝟯𝟵.𝟰") 𝗽𝗮𝗹𝗹𝗲𝘁

From aerospace OEMs and their supply chains to energy, mold and die, semiconductor and general ultra precision machining, it's built to deliver exceptional hard metal performance and unbeatable precision for critical tolerance parts.

We’re heading to IMTS 2026. 🇺🇸Mitsui Seiki USA will be exhibiting at McCormick Place in Chicago, bringing our latest mac...
07/23/2026

We’re heading to IMTS 2026. 🇺🇸

Mitsui Seiki USA will be exhibiting at McCormick Place in Chicago, bringing our latest machine tool solutions to one of the biggest manufacturing events in the world.

📍 South Building, Level 3 - Booth 338700
📅 September 14 - 19

Come and explore the technology, engineering and expertise behind our machine tools - we look forward to meeting you there!

International Manufacturing Technology Show

Boeing has taken another step in expanding 737 MAX production with the opening of its new US$1 billion “North Line” prod...
07/22/2026

Boeing has taken another step in expanding 737 MAX production with the opening of its new US$1 billion “North Line” production line at its Everett, Washington facility.

The investment increases manufacturing capacity for an aircraft that is seeing strong demand following a challenging period for the company.

Read the full story: https://bit.ly/4gDd24y

This is great news for Boeing - who we proudly supply with our bespoke machine tools. t's exciting to see this investment supporting increased aircraft production and creating opportunities across the wider aerospace supply chain.

Address

563 Commerce Street
Franklin Lakes, NJ
07417

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

(201) 337-1300

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