セイコーインスツル List of Products and Services

Thin-walled machining is a process that involves machining a workpiece to a thin profile while maintaining high precision. Workpieces that require internal grinding often demand not only roundness and surface roughness but also concentricity concerning the outer diameter. This is especially true for thin-walled workpieces, where deformation due to gripping becomes a challenge. Seiko Instruments has developed a highly versatile 2-roll, 1-shoe spindle, applying methods previously used for internal grinding of ball bearing components to avoid deterioration of shape accuracy caused by gripping. If you are facing issues with shape accuracy due to gripping, such as with scroll chucks, collet chucks, or mandrel chucks, please feel free to consult us. *For more details, please refer to the PDF document or feel free to contact us.*

• Grinding Machine

In machining equipment such as cutting machines and grinding machines, a rotating drive device that rotates materials and tools is essential. One type of rotating drive device is the spindle motor. Spindle motors are compact and highly precise among rotating drive devices, so it is believed that demand will increase more than ever in industries that require high machining precision, such as high-precision machining. This article explains spindle motors, which are rotating drive devices. Please take a moment to read it. Additionally, Seiko Instruments is developing high-precision high-frequency spindle motors to meet a wide range of needs, primarily in the precision machining field. If you are looking for a high-speed spindle motor that is both highly precise and versatile, or if you have inquiries about existing equipment's spindle motors, please contact Seiko Instruments. *For more details, please refer to the PDF materials or feel free to contact us.

• Grinding Machine

A grinding machine is a piece of equipment that processes workpieces by pressing a high-speed rotating grinding wheel against the material to be machined. It is mainly used for finishing processes and machining difficult-to-cut materials, but various types of equipment and machining methods are employed depending on the workpiece and the area to be processed. Additionally, with the miniaturization and complexity of finished products, the demands on machining equipment continue to rise. This document explains the basics of grinding machines and the types of grinding machines and grinding processes. We encourage you to read it. At Seiko Instruments, we primarily handle internal grinding machines. Seiko Instruments' internal grinding machines utilize a self-developed high-frequency spindle, achieving high precision and work efficiency, especially for small-diameter hole machining, while also being space-saving. If you are considering the introduction of an internal grinding machine, please feel free to consult with Seiko Instruments. *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SIG-Evo1s/2s" is a fully automatic high-precision internal grinding machine that pursues high processing accuracy and productivity. The "SIG-Evo2s" is equipped with two grinding spindle axes to accommodate complex machining. It employs oil hydrostatic guidance for the spindle and grinding spindle table, enabling high-speed and high-precision position control with linear motor drive. Furthermore, with 2-axis linear interpolation control, it can handle tapered surfaces at arbitrary angles, making setup work easier. 【Features】 ■ Chuck type for automotive parts processing ■ Oil hydrostatic guidance for the spindle and grinding spindle table ■ High-speed and high-precision position control with linear motor drive ■ Built-in motor type oil hydrostatic and dynamic pressure hybrid bearing spindle ■ Main body dimensions: 1,600mm(W) × 1,700mm(D) × 1,400mm(H) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SIG-2S II/SIG-3S II" is a high-precision internal grinding machine characterized by multiple grinding spindle axes. With 1 chuck and 2 spindles, it enables versatile grinding. The processing specification features a diaphragm chuck spindle. It can be used for machining automotive parts such as gasoline and diesel injection nozzles and pumps. 【Features】 ■ For automotive parts machining ■ Versatile grinding with 1 chuck and 2 spindles ■ Diaphragm chuck spindle ■ Main body dimensions ・SIG-2S II: 2,100mm(W)×1,600mm(D)×1,950mm(H) ・SIG-3S II: 2,900mm(W)×3,900mm(D)×2,300mm(H) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SG2-C/R" is a space-saving internal grinding machine that inherits the "SG1-IB" and is capable of mounting a chuck spindle. It supports various machining processes, such as sheet surfaces, with 2-axis interpolation control. The grinding wheel spindle can be mounted to rotate from 80,000 to 180,000 RPM. Additionally, it accommodates various applications such as a front sizing device and an AE sensor-equipped dressing device, achieving significant miniaturization compared to conventional chuck-type machines. 【Features】 ■ Chuck and centerless for automotive parts processing ■ Equipped with a high-precision chuck spindle ■ Grinding wheel spindle can be mounted to rotate from 80,000 to 180,000 RPM ■ Equipped with a servo motor-driven 2-arm loader for high-speed feeding ■ Main body dimensions: 850mm(W) × 1,162(D) × 1,580(H) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SSPG series" is a high-frequency spindle that is easy to customize and can be modified for milling applications. By achieving ultra-high precision, high output, and high rigidity, it can handle everything from high-speed rough machining to precision finishing with just one spindle. This product was developed to meet the growing demand for ultra-precision machining across a wide range of fields, including machine tools, semiconductor manufacturing equipment, and electronic component processing, by pursuing a high level of accuracy and versatility. 【Features】 ■ High output: Up to 33kW (1.1 to 2.1 times compared to conventional machines) ■ Energy-saving: Reduced air consumption compared to conventional machines, lubrication oil consumption is 1/6 ■ High rigidity: Uses large-diameter bearings ■ High precision: Improved bearing grade ■ Versatility: Customization according to customer needs is possible *For more details, please refer to the PDF document or feel free to contact us.

• Processing Jig

The NEW "H Series" is a spindle that comes standard with SII's internal grinding machines. Backed by half a century of grinding processing achievements, this high-speed and high-precision spindle continues to be favored by our customers. Aiming for further evolution, we have released the fully redesigned "NEW H Series." This new series reduces air flow by improving airflow and reducing the number of pipes, and it is compatible with both lubrication oils VG10 and VG32. We offer a comprehensive lineup with speeds ranging from 50,000 to 150,000 min^-1. 【Features】 ■ Achieves reduced environmental impact Air usage: 50% reduction, oil usage: 75% reduction (compared to our conventional products) ■ Easy to install in compact machines and dedicated machines that save space ■ Comprehensive lineup with speeds from 50,000 to 150,000 min^-1 ■ Uses bearing grade P2 ■ dmn value of 2.2 to 2.5 million ■ Rich track record due to installation in SII's internal grinding machines *For more details, please refer to the PDF document or feel free to contact us.

• Processing Jig

The "STG-6N" is a CNC internal grinding machine equipped with a standard 6-inch scroll chuck. It features an easy-to-use human interface and a space-saving design. It is equipped with a proprietary low-vibration, high-precision high-frequency spindle. 【Examples of improved production efficiency through reduced processing time】 <Gear> ■Inner diameter size: φ40×37mm ■Material: SCM415 ■Processing time: 80% reduction ■Processing accuracy: Improved (Surface roughness Ra 0.1μm or less) <Ring Gauge> ■Inner diameter size: φ50×20mm ■Material: SKS31 ■Processing time: 56% reduction ■Processing accuracy: Improved (Roundness 0.3μm or less / Surface roughness Ra 0.1μm or less) <Collet> ■Inner diameter size: φ30×20mm ■Material: Carbide ■Processing time: 70% reduction ■Processing accuracy: Improved (Surface roughness Ra 0.1μm or less) *For more details on various examples, please contact us directly. *For more information on the internal grinding machine, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The product, the compact universal internal grinding machine "STG-3NX," is a CNC internal grinding machine that enables high-precision and high-efficiency processing despite its compact size. Since its launch in 2009, the "STG-3NX" has received high praise as a successor model to the small internal grinding machine "STG-3N," which is equipped with a 3-inch/4-inch chuck. It retains the advantages of space-saving, high rigidity, and low center of gravity structure while expanding the internal space by extending the stroke of the spindle base table, thereby improving workpiece loading and unloading as well as in-machine measurement operations. Additionally, it is equipped with a high-output, high-rigidity self-developed high-frequency spindle "H Series," contributing to the improvement of customer productivity through high-precision and high-efficiency processing. 【Features】 ■ The stroke of the spindle base table is extended by 33%, expanding the internal space. ■ Achieves high-precision and high-efficiency processing. ■ Improved operability based on ergonomic layout. ■ Equipped with FANUC NC device (FIELD system compatible). *To evaluate the capabilities of the STG-3NX, we offer test processing of specified workpieces free of charge in principle. Please contact us through the site or form below.

• Grinding Machine

The "STG Series" is a versatile internal grinding machine equipped with a unique high-speed, high-precision, and high-rigidity spindle mounted on a grinding wheel shaft, achieving improved processing accuracy and productivity for inner diameter finishing. There are two models in the lineup: the "STG-3NX," which comes standard with a 4-inch chuck, and the "STG-6N," which is equipped with a 6-inch chuck. Both models are compact in size, allowing for space-saving installation. 【Features】 <STG-3NX> A compact versatile internal grinding machine that significantly improves the accuracy and productivity of small diameter hole finishing. - Capable of grinding inner diameters as small as φ0.3mm. - Standard equipped with a scroll chuck that can handle small-batch production of various types. - Suitable for chuck collets, mold components, ring gauges, carbide parts, ceramic parts, magnets, etc. <STG-6N> A compact versatile internal grinding machine that achieves precision and high-efficiency processing for a wide variety of products with outer diameters up to φ160mm. - Compatible with a wide range of workpieces with outer diameters up to φ160mm. - Compatible with FANUC's FIELD system. - Suitable for gears, mold components, ring gauges, chuck collets, hydraulic parts, automotive parts, etc. *For more details, please refer to the documentation.

• Grinding Machine

The "spindle motor" adopts a motor that integrates the power source and the rotating part. This product, with its simple structure, is compact while possessing capabilities equivalent to other rotating drive devices. Furthermore, it does not require space in directions other than the axial direction, allowing for the construction of many rotating shafts in parallel. As for the lineup, various options are available based on differences in rotation speed, output, size, and lubrication method, enabling the selection of products suited to specific applications. 【Features】 ■ Adopts a motor that integrates the power source and the rotating part ■ Simple structure of the device ■ Compact while possessing capabilities equivalent to other rotating drive devices ■ Does not require space in directions other than the axial direction ■ Capable of constructing many rotating shafts in parallel *For more details, please refer to the PDF materials or feel free to contact us.

• Other motors

The "spindle motor" is compact among rotating drive devices, leading to increased demand across various industries within manufacturing. Specifically, it is highlighted in the ultra-precision machining areas such as machine tools, semiconductors, and electronic component processing machines. Additionally, in recent years, there has been a growing demand for small-batch production of various types, further increasing the demand for spindle motors, which have a wide application range for a single product. 【Performance】 ■ Compact among rotating drive devices ■ High control precision ■ Applicable to various equipment ■ Wide application range for a single product *For more details, please refer to the PDF materials or feel free to contact us.

• Other motors

At Seiko Instruments, we are developing high-precision high-frequency spindle motors to meet a wide range of demands, primarily in the field of precision machining. Based on the technology cultivated through years of precision machining for wristwatches, we have built a track record by incorporating these motors into internal grinding machines developed in-house. Additionally, by increasing the diameter of the rotating shaft, we ensure high rigidity while achieving high rotational accuracy at high speeds through the optimization of bearing design and lubrication circuits. 【Strengths】 ■ Realization of high rigidity and high precision rotation through optimized structural design ■ High reliability through a unique inspection and assembly system ■ High versatility through a rich variety of interfaces ■ Cost and performance optimization through simulation technology ■ Reduction of environmental impact through optimal design of lubrication circuits *For more details, please refer to the PDF materials or feel free to contact us.

• Other motors

A "grinding machine" is equipment used to process workpieces by pressing a high-speed rotating grinding wheel against the material to be machined. Since it processes by grinding away the surface, it takes longer to achieve the desired shape compared to cutting processes that involve cutting the material. However, because it grinds slowly and gradually, it can achieve high precision. It is commonly used in the finishing process to enhance surface accuracy after shaping the workpiece into the desired form through cutting processes. 【Features】 ■ Presses a high-speed rotating grinding wheel against the material to be processed ■ Used in the finishing process to enhance surface accuracy ■ Manual grinding machine: Small, handheld for processing materials ■ Machine grinding machine: Installed in factories such as manufacturing industries *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

The grinding machine can be classified according to the purpose of processing and the shape of the material to be processed. The "surface grinding machine" is primarily equipment for performing surface grinding, and it can be used for various types of grinding depending on the direction of movement of the workpiece and the way the grinding wheel is applied. In addition, there are "internal grinding machines" for performing internal grinding, "cylindrical grinding machines" that rotate the grinding wheel in the opposite direction to the workpiece, "centerless grinding machines," and "tool grinding machines." [Types of Grinding Machines (Excerpt)] ■ Surface Grinding Machine - Achieves both high dimensional accuracy and high precision surface roughness - Capable of achieving high flatness and parallelism on both sides of the workpiece ■ Internal Grinding Machine - Standard type: Both the workpiece and the grinding wheel are rotated while the grinding wheel is moved back and forth - Planetary type: The workpiece is fixed while only the grinding wheel rotates *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

There are various types of grinding machines. In recent years, as products have become more complex and compact, the components required have also needed to be smaller and more precise, leading to a demand for high precision and efficiency in the grinding machines used to process them. Additionally, from the perspective of environmental and space efficiency, it is necessary to reduce the footprint of the equipment itself without compromising performance. If you choose a domestic manufacturer that offers comprehensive support from before to after installation, you can easily consult them and alleviate any concerns. 【Types of Grinding Machines】 ■ Surface Grinding Machine ■ Internal Grinding Machine ■ Cylindrical Grinding Machine ■ Centerless Grinding Machine ■ Tool Grinding Machine *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

Internal grinding is a type of grinding process that involves grinding the inner surface of cylindrical workpieces. In various industries such as automotive, home appliances, and information devices, where high functionality and complex internal structures are advancing, there is a demand for small, high-precision parts. In internal grinding used for processing these parts, a balance between high processing accuracy and productivity is desired. Additionally, beyond processing accuracy, the equipment itself for internal grinding machines must also meet various requirements. [Challenges] - Balancing high processing accuracy and productivity - The equipment for internal grinding machines must also respond to various demands - Space-saving and cost-effective equipment - Consideration for the environment - Improvement of processing accuracy and efficiency *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

At Seiko Instruments, we offer a space-saving internal grinding machine with excellent machining accuracy. We have achieved a machine size that fits small workpieces without sacrificing the operability and usability for the operators using the equipment. The machining accuracy is realized by adopting a high-performance high-frequency spindle developed in-house. Additionally, the main body of the equipment is highly versatile and has excellent expandability. 【Features】 ■ Space-saving with excellent machining accuracy ■ Does not sacrifice the operability and usability for the operators using the equipment ■ Achieves a machine size that fits small workpieces ■ Adopts a high-performance high-frequency spindle developed in-house ■ Main body of the equipment: highly versatile and excellent expandability *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

We would like to introduce a case where Seiko Instruments Inc. resolved challenges through test processing. For small parts, such as components for medical devices, where coaxiality between the inner and outer diameters is required, it is generally difficult to ensure precision using commonly employed tool clamping methods like air chucks, diaphragm chucks, and magnetic chucks. Our internal grinding machine addresses these challenges by adopting a roll spindle mechanism used in bearing processing and our self-developed high-frequency spindle. [Case Overview] ■ Issues - Difficulty in ensuring precision for small parts requiring coaxiality between the inner and outer diameters. ■ Results - Achieved automatic supply of parts via a parts feeder, automatic measurement of workpieces after processing, and automatic discharge. - Capable of responding to demands not only for processing precision and efficiency but also for overall productivity improvement. *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

We would like to introduce a case where Seiko Instruments Inc. solved challenges through test processing. In the case of precision machined parts, a lapping process may be required in the post-process of inner surface grinding. To shorten the time required for processing, it is necessary to machine at a precision close to that of the final finishing lapping process during the inner surface grinding stage. By improving roundness, cylindricity, and surface roughness, the lapping process can be simplified. 【Case Overview】 ■Challenges - Shorten processing time - Machine at a precision close to that of lapping ■Results - Simplified lapping process - Achieved improvement in surface roughness in addition to shape accuracy *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

We would like to introduce a case where Seiko Instruments Inc. resolved challenges through test processing. When performing internal grinding of micro-holes, the rigidity of the quill supporting the grinding wheel becomes lower, resulting in greater deflection of the quill, making it very difficult to ensure dimensional and shape accuracy. With our internal grinding machine, we can perform high-efficiency internal grinding of extremely small diameters down to a minimum of 0.3mm, thanks to our self-developed high-speed spindle with high precision and the processing know-how cultivated over many years of experience. [Case Overview] ■Challenges - Ensuring dimensional and shape accuracy ■Results - High-efficiency internal grinding of extremely small diameters down to a minimum of 0.3mm is possible. *For more details, please refer to the related links or feel free to contact us.

• Grinding Machine

Developed to meet the increasing demand for ultra-precision machining across a wide range of fields such as machine tools, semiconductor manufacturing equipment, and electronic component processing machines, this product pursues the highest levels of accuracy and versatility. With the realization of ultra-high precision, high output, and high rigidity, it is capable of handling everything from high-speed rough machining to precision finishing with a single spindle. 【Features】 - High output / high torque: Significant improvement over our conventional machines in the same rotational speed range - Energy-saving: Reduced air consumption compared to our conventional machines - High rigidity: Adoption of large diameter bearings - High precision: Use of upgraded bearing grades, low vibration - High-speed rotation: dmn value of 2.4 to 2.7 million - Tool mounting: Screw + in-low, HSK - Compatibility: Shape compatibility with overseas manufactured spindles *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine
• Other cutting tools

We would like to introduce a case study of "magnet" processing that we conducted. Our goal was to improve processing accuracy and achieve in-house production of workpieces that our customers had been outsourcing. Compared to before implementation, processing time was reduced by 65%, achieving a surface roughness of Ra 1.5μm or less and roundness of 1.5μm or less. 【Case Overview】 ■ Processing dimensions: φ4mm × 26.4mm ■ Material: Neodymium magnet ■ Features: Special material, long hole (L/D = 6.6) ■ Model: STG-3N ■ Spindle: M8H-T (Max 80,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Other processing machines

We would like to introduce a case study of "alumina" processing conducted by our company. In the customer's equipment, the roundness was approximately 4μm with a processing time of 2400 seconds, so we proposed a processing method to improve the roundness in about half the processing time. Compared to before implementation, we achieved a 50% reduction in processing time, a surface roughness of Ra 0.5μm or less, and a roundness of 1.0μm or less. 【Case Overview】 ■Processing dimensions: φ3.1mm×22.5mm ■Material: Alumina ■Features: Special material, long hole (L/D=6.4) ■Model: STG-3N ■Spindle: M15H-T (Max 150,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Other processing machines

We would like to introduce a case study of "dice" processing that we conducted. In the customer's equipment, increasing the spindle rotation speed led to unstable precision, creating distrust in the spindle. Therefore, we proposed that our spindle maintains stable precision even at maximum rotation speed. Compared to before implementation, we achieved a 50% reduction in processing time and roundness of less than 1.0μm. 【Case Overview】 ■Processing dimensions: φ7.8mm×7mm ■Material: Carbide ■Features: Special outer diameter ■Model: STG-6N ■Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Other processing machines
• Other molds

We would like to introduce our processing case that has achieved high-precision machining of thin-walled workpieces. Workpieces that require internal grinding often demand not only roundness and surface roughness but also runout (coaxiality) relative to the outer diameter. This is particularly challenging for thin-walled workpieces, where deformation due to gripping becomes an issue. To address this, we have equipped our CNC internal grinding machine STG-6N, which we manufacture and sell, with a newly developed 2-roll 1-shoe spindle, enabling high-precision machining of thin-walled workpieces. 【Case Overview】 ■Challenges - Susceptible to deformation due to gripping ■Results - Uniform wall thickness relative to the reference workpiece's outer diameter - Dramatic improvement in coaxiality of the inner diameter relative to the outer diameter after machining - Reduced deformation of the workpiece due to gripping, leading to expected improvements in roundness *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

We would like to introduce a processing case of "guide bushes" that we conducted. As a background for the introduction, we proposed improving productivity by reducing processing time. The processing dimensions are φ24×67mm. The material is SUJ2, and the feature is a long hole. As a result of the introduction, we achieved a 35% reduction in processing time, a surface roughness of Ra0.4μm or less, and roundness of 1.5μm or less. 【Case Overview】 ■ Processing dimensions: φ24×67mm ■ Material: SUJ2 ■ Feature: Long hole ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Processing Contract
• Mold Design

We would like to introduce a processing example of "guide bushes" that we conducted. The model used is STG-6N. The processing dimensions are φ13mm×25mm, and the material is SUJ2. The background for the introduction is the improvement of productivity through reduced processing time. As a result of the introduction, the surface roughness was achieved at Ra0.2μm or below, and the roundness was realized at 0.8μm or below. 【Case Overview】 ■ Processing dimensions: φ13mm×25mm ■ Material: SUJ2 ■ Features: Flange on the outer diameter ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Other molds
• Mold Design
• Processing Contract

We would like to introduce a case study of the processing of "dice" that we conducted. To shorten processing time, we introduced the "STG-3N." The processing dimensions are φ5mm×3mm, and the material used is carbide nib. As a result of the introduction, processing time was reduced by 80% compared to before, and the surface roughness was less than Ra0.2μm. 【Case Overview】 ■ Processing dimensions: φ5mm×3mm ■ Material: Carbide nib ■ Features: Difficult-to-cut material ■ Model: STG-3N ■ Spindle: M11H-TM (Max 110,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Dice
• Processing Contract

We would like to introduce a case study of machining sleeves (ceramic parts). The background for the introduction was the need to reduce processing time and improve shape accuracy and surface roughness. Compared to before the introduction, processing time was reduced by 80%, and the surface roughness is below Ra0.4μm, with roundness below 0.35μm. 【Case Overview】 ■ Machining dimensions: φ12mm×8mm ■ Material: Ceramics (SiC) ■ Features: Difficult-to-machine material ■ Model: STG-3N ■ Spindle: M11H-T (Max 110,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Ceramics
• Other machine elements

We would like to introduce a case study of machining gears (mechanical components). The background for the introduction was the need to reduce machining time. Compared to before the introduction, machining time has been reduced by 80%, and the surface roughness has achieved a result of Ra0.1μm or less. 【Case Overview】 ■ Machining dimensions: φ40mm × 37mm ■ Material: SCM415 ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

• gear
• Processing Contract

Here are some examples of processing with Colette (tool). In the customer's owned equipment, there was significant dimensional variation in the workpieces after processing, making it difficult to control processing accuracy. This required rework for corrections, consuming a lot of time. After implementation, the customer's working time was significantly reduced, with processing time shortened by 70% and surface roughness achieved at Ra0.1μm or less. 【Case Overview】 ■ Processing dimensions: φ30mm×20mm ■ Material: Carbide ■ Features: Slits on the processed surface ■ Model: STG-6N ■ Spindle: SSPG-045 T100 (Max 45,000rpm) *For more details, please refer to the related links or feel free to contact us.

• Other machine elements
• Processing Contract

We would like to introduce a case study of the processing of "ring gauges" that we conducted. The processing dimensions are φ50mm × 20mm, and the material is SKS31. The background for the introduction was to improve product shape accuracy and reduce cycle time. After implementation, the surface roughness was reduced to Ra 0.1μm or less, and the roundness was less than 0.3μm, resulting in a 60% reduction in processing time compared to before implementation. 【Case Overview (Partial)】 ■ Background: Improvement of product shape accuracy, reduction of cycle time ■ Effects of Implementation - Surface roughness Ra 0.1μm or less - Roundness 0.3μm or less - Processing time reduced by 60% (compared to before implementation) *For more details, please refer to the related links or feel free to contact us.

• Processing Contract

A compact universal internal grinding machine that achieves precision and high-efficiency processing for a wide variety of products with an outer diameter of up to 160mm. ● Space-saving design Main body size: 1,600(W) × 1,615(D) × 1,320(H) mm ● Compact size design tailored to factories that prioritize equipment size and corresponding workpiece size ● Standard equipped with a high-output, high-rigidity in-house spindle (SSPG series) that contributes to improved productivity through high-precision and high-efficiency processing ● Chuck size: 6 inches

• Grinding Machine

Based on the technology cultivated in watch manufacturing, we propose various grinding machines that achieve precision and high-speed processing. With expert craftsmanship, we provide compact and energy-efficient internal grinding machines that are friendly to the factory environment.

• Grinding Machine

Seiko Instruments' high-frequency spindles meet various customer needs, including precision grinding, high-speed machining, milling, and high-speed rotation testing, through the technology cultivated in watch manufacturing and the trust and track record in precision machining that has continued since the Seiko Instruments era.

• Grinding Machine

The "SIG02α II" is an evolved fully automatic internal grinding machine that inherits the SIG series, boasting a sales record of over 2,000 units. In addition to the well-established 2-roller 1-shoe spindle, a 2-shoe 1-magnet spindle is also available. It features a high-rigidity static pressure guide surface on the table guide. Moreover, it has successfully achieved significant miniaturization of the machine body, allowing it to accommodate workpiece outer diameters ranging from φ8mm to φ40mm and φ30mm to φ62mm, depending on the spindle type. 【Features】 ■ Centerless type for bearing processing ■ High-rigidity static pressure guide surface on the table guide ■ Capable of handling workpiece outer diameters from φ8mm to φ40mm and φ30mm to φ62mm ■ Significant miniaturization of the machine body achieved ■ Body dimensions: 1,240mm(W) × 1,220mm(D) × 1,800mm(H) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

The "SIG-S II" is a compact, environmentally friendly high-precision and high-efficiency internal grinding machine. It features a hydraulic-free design and a table ball screw lubrication-free system. The combination of block-built units allows for versatile processing. It is suitable for workpieces such as gasoline and diesel injection nozzles and pumps, with processing specifications using a diaphragm chuck spindle. 【Features】 ■ Chuck type for automotive parts processing ■ Versatile processing possible with a combination of block-built units ■ Table ball screw lubrication-free ■ Hydraulic-free ■ Main body dimensions: 1,550mm(W) x 1,270mm(D) x 1,900mm(H) *For more details, please refer to the PDF document or feel free to contact us.

• Grinding Machine

This is the introduction of a high-precision, high-efficiency internal grinding machine developed based on the tradition and experience since the founding of Seiko Instruments Inc.!

• Grinding Machine