長岡精機製作所 List of Products and Services

Our company owns over 25 NC automatic lathes and specializes in high-precision precision cutting processing. You can trust us with work that requires micron-level and mirror surface cutting. We also accommodate short delivery times and prototypes. Recently, we have introduced Mitutoyo's shape measuring machine "CV-2100" and roundness measuring machine "RA-120," enabling us to provide even higher quality and precision contract processing than before. If you are facing challenges with high-precision precision cutting processing, please consult Nagaoka Seiki Seisakusho!

• Contract manufacturing

At Nagaoka Seiki Seisakusho, we operate a technical information site that shares knowledge and know-how about precision cutting processing using lathes for designers and production engineers. (Search for "Precision Cutting Processing.com!") [Published Information] - Technical information on precision cutting processing and high-precision machining using lathes. - Cost reduction examples for each process from the design stage to finishing. - Methods for producing high-precision cutting parts at low cost. - Points for achieving cost reduction and how to create drawings to prevent troubles. We offer a free cutting processing technology handbook that helps designers and production engineers understand cost reduction and achieve VA/VE through lathe cutting processing. *On Ipros, you can download a digest version of the first three pages. *If you would like the full version, please feel free to contact us.

• Other cutting tools
• Other machine elements

**Business Description** Precision machining of components using NC automatic lathes for SUS, non-ferrous metals, and steel. **Main Processed Items and Processing Details** Precision machined parts. **Main Products** Automotive parts, electrical parts, information and communication parts, OA parts. **Specialty Areas** High-precision machined parts (dimensional and mirror surface accuracy), with a constant focus on QCD, committed to quality manufacturing. ● For more details, please download the catalog or contact us.

• Other Auto Parts
• Other machine elements

As an example of Nagaoka Seiki's machining capabilities, we would like to introduce our dimensional accuracy. For automotive parts made from DSH400F material, we have achieved a dimensional accuracy of Φ2.0±3μ at the arrow points in the image, with a material diameter of Φ3.0. Since the cutting area is long, it is a machining process that requires careful consideration of the balance of each dimension. At Nagaoka Seiki Manufacturing, we accept precision parts machining using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-cut materials. We specialize in high-precision machined parts (dimensional accuracy and mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download our catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we would like to introduce surface accuracy. For automotive parts made of SUS303 material, the surface roughness of the machined section is finished at RZ1.5, as indicated by the arrow in the image. In particular, the surface roughness of the tapered section tends to be poor, requiring careful machining. At Nagaoka Seiki Manufacturing, we handle precision machining of parts using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-machine materials. We specialize in high-precision machined parts (dimensional accuracy, mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download the catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we would like to introduce our inner diameter precision. For information communication equipment made from C3604 material, the inner diameter has been finished with a tolerance of ±2μ at the Φ0.25 indicated by the image arrow. Since the inner diameter is narrow, careful management of the cutting tools is required for this machining. At Nagaoka Seiki Manufacturing, we accept precision parts cutting using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-machine materials. We specialize in high-precision machined parts (dimensional accuracy, mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download our catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we would like to introduce dimensional accuracy. For automotive parts made from DSH400F material, the dimensional accuracy at the four indicated points in the image is finished within ±3μ (the tolerances for each dimension indicated by the arrows in the image are ±5μ to ±3μ). Nagaoka Seiki Manufacturing accepts precision parts machining using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-cut materials. In particular, we specialize in high-precision machined parts (dimensional accuracy, mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download the catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we introduce the appearance of our work. For automotive parts made from C3604 material, we have implemented techniques in the machining process to prevent burrs from forming in the knurled areas (the burrs indicated by the arrows in the image are being processed to avoid formation). At Nagaoka Seiki Manufacturing, we accept precision machining of parts using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-machine materials. We specialize in high-precision machined parts (dimensional accuracy and mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download our catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we would like to introduce inner diameter precision. For automotive parts made from DSH400F material, we achieve an inner diameter precision of φ3 within ±2.5μ (machining within an inner diameter tolerance of ±2.5μ). Since it is a hard material, setting the machining conditions is key. At Nagaoka Seiki Manufacturing, we offer precision machining of parts using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-machine materials. We specialize in high-precision machined parts (dimensional accuracy, mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download our catalog.

• Processing Contract

As a machining example from Nagaoka Seiki, we would like to introduce bearing parts. In our cutting process, the inner diameter after heat treatment is finished to Φ7±0.005 (with SUJ2, we maintain the inner diameter within ±5μ through cutting alone). Since distortion occurs after heat treatment, we take that into account during the cutting process. At Nagaoka Seiki Manufacturing, we accept precision parts cutting using NC automatic lathes, from common materials such as stainless steel, aluminum, copper, and brass to difficult-to-machine materials. We specialize in high-precision machined parts (dimensional accuracy, mirror surface accuracy) and are committed to manufacturing with a constant focus on QCD. For more details, please contact us or download our catalog.

• Processing Contract