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  3. セイコーインスツル 精密デバイス事業部 精機部
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セイコーインスツル 精密デバイス事業部 精機部

EstablishmentSeptember 7, 1937 (Showa 12)
capital975600Ten thousand
number of employees673
addressChiba/Matsudo-shi/563 Takatsuka Shinden
phone047-392-2091
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last updated:Jun 09, 2025
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セイコーインスツル List of Products and Services

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Fully automatic internal grinding machine Fully automatic internal grinding machine
Universal Internal Grinding Machine STG Series Universal Internal Grinding Machine STG Series
High-speed spindle motor High-speed spindle motor
Basic knowledge Basic knowledge
Problem solving Problem solving
Processing examples Processing examples
Fully

Fully automatic internal grinding machine

We provide fully automatic internal grinding machines suitable for mass production, including automotive parts and ball bearings.

Fully Automatic High Precision Internal Grinding Machine 'SIG-Evo1s/2s'

Expanding the range of workpieces through dual-axis conversion! A high-precision, high-efficiency internal grinding machine based on a new concept.

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.

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Fully Automatic Internal Grinding Machine 'SIG-S II'

Introducing a chuck type for automotive parts processing that can accommodate a wide range of workpieces!

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.

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Fully automatic high-precision internal grinding machine 'SIG-2S II/SIG-3S II'

A grinding machine that allows for versatile grinding with multiple grinding stone spindle axes, featuring a diaphragm chuck spindle.

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.

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Fully Automatic Internal Grinding Machine 'SIG02α II'

Successfully achieved significant miniaturization of the main unit! It widely accommodates various spindle types with an outer diameter of up to φ62.

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.

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Internal Grinding Machine SIG03α

Bearing Grinding Machine Series

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.!

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Fully Automatic Small Internal Grinding Machine 'SG2-C/R'

Equipped with a servo motor-driven two-arm loader for the chuck spindle, achieving high-speed self-feeding!

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.

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