Adamant Namiki Precision Jewel

What Adamant Namiki Precision Jewel does

Orbray Co., Ltd., operating as Orbray since a January 2023 rename from Adamant Namiki Precision Jewel, is a privately held Japanese precision manufacturer founded in 1939 and headquartered in Tokyo (Adachi-ku), with a planned relocation to Yuza, Akita Prefecture in December 2026. The company operates through three wholly-owned subsidiaries — Yabuki Precision Jewel, Murakami Precision, and Kagoshima Electronics — and is ISO 9001 certified.

Its core capability is vertically integrated, nano-precision processing of industrial gemstones and advanced ceramics, including sapphire, diamond, ruby, metal glass, bioceramics, and Ce-added YAG/sapphire eutectic crystals. Proprietary process technologies span diamond microdrilling, femtosecond and UV laser processing, room-temperature bonding, ceramic molding, and high-precision grinding/polishing. On this materials and process base, Orbray builds four product lines: precision jewel parts (bonding tools, watch jewels, nozzles, medical precision parts, sapphire substrates, and single crystal diamond wafers); optical communication components (ferrules, sleeves, connectors, MEMS variable attenuators and switches, fiber arrays); small motors and motor units (DC coreless, brushless, geared, RC servo, robot-joint servos, the K³HAND collaborative-robot end effector, diaphragm pumps, and the Dynalox unpowered lock system); and medical device ODM/OEM services with 50+ years of healthcare-sector experience. Sub-brands include ORSONIC (sapphire audio accessories), EHIoT (vibration-powered IoT devices), and NAPHIA (sapphire products).

Orbray generates revenue through B2B direct sales of these components and contract manufacturing services, operating primarily on an ODM/OEM basis with custom engineering for motor units and medical devices. Customers span eight end-verticals — semiconductors, information and communications, industrial machinery, robotics, medical/healthcare/dental, watch and jewelry, automotive, and audio — served globally through direct enterprise engagement rather than channel resellers. The company's go-to-market combines a technical corporate website and Orbray Magazine content presence with active participation in academic conferences (e.g., MRS Spring Meeting) and peer-reviewed publications, targeting design engineers and procurement at precision manufacturers. Recent activity — including 3-inch single crystal diamond wafer production, 12-inch epi-ready sapphire substrate sample shipments, and joint verification partnerships with Matsushita, Tosoh, and Mitsui Chemicals — positions Orbray to extend from legacy industrial-jewel components into next-generation semiconductor materials and dental materials.

Name

Adamant Namiki Precision Jewel

Legal name

Orbray Co., Ltd.

Website

https://ad-na.com

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

251–500 employees

Short description

Orbray Co., Ltd. (formerly Adamant Namiki Precision Jewel) is a Japanese precision manufacturer of nano-processed industrial jewel parts, fiber optic components, small motors, and medical-device ODM/OEM services serving semiconductor, telecom, robotics, and healthcare customers.

Ownership category

akta.pro rank

Product category

Precision Industrial Components

NAICS

Jewelry and Silverware Manufacturing (339910), Semiconductor Machinery Manufacturing (333242), Ophthalmic Goods Manufacturing (339115)

SIC

Jewelry, Precious Metal (3911), Optical Instruments & Lenses (3827)

akta.pro primary industry

Synthetic/Lab-Grown Diamonds & Gemstones (Manufacturing & Trading) (CRAKAJAM)

akta.pro secondary industries

Casting, Stamping & Fabrication (OEM/ODM) (CRAKAIAF), Fine Jewelry Components (Chains, Settings, Findings) (CRAKAAAJ)

Keywords

• Precision jewel components
• Fiber optic ferrules
• DC coreless motors
• Industrial sapphire substrates
• Medical device ODM

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Supply Chain, Operations, Infrastructure

Revenue model

1. Precision Jewel Parts Sales: Manufacturing and selling precision gemstone components including sapphire products, watch components, bonding tools, precision nozzles, and medical precision parts
2. Optical Communication Components: Ferrule, sleeve, connector, and fiber optic component manufacturing and sales for telecommunications infrastructure
3. Small Motors and Motor Units: DC coreless motors, brushless motors, geared motors, encoders, and customized motor units for robotics and industrial applications
4. Medical Device ODM/OEM: Original design manufacturing and original equipment manufacturing for medical devices with over 50 years of experience in the healthcare sector

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Adamant Namiki Precision Jewel (now Orbray Co., Ltd.) manufactures precision industrial gemstone components including sapphire, diamond, and ruby parts; fiber optic components such as ferrules, sleeves, connectors, and MEMS optical devices; and DC coreless motors, brushless motors, and motor units for robotics and automation. The company also offers over 50 years of medical device ODM/OEM services, leveraging nano-precision machining technology developed through gemstone processing expertise.

Product overview

Orbray Co., Ltd. (formerly Adamant Namiki Precision Jewel) operates as a precision manufacturing company with four core product categories: Precision Jewel Parts, Optical Communication Components, Small Motors, and Medical Devices. The Precision Jewel Parts division offers industrial gem materials (sapphire, diamond, ruby, ceramics) and precision-processed components including bonding tools, watch parts, nozzles, and medical precision parts. Optical Communication Components include ferrules, sleeves, connectors, MEMS devices, and fiber arrays for telecom infrastructure. Small Motors encompass DC coreless motors, brushless motors, geared motors, encoders, servo motors, and integrated motor units for robotics and automation. The company also provides custom motor units, diaphragm pumps, optical measurement systems, and specialized products like vibration-powered IoT devices and sapphire audio accessories under the ORSONIC brand. With nano-precision machining technology developed through gemstone processing expertise, the company serves diverse industries including semiconductors, telecommunications, automotive, robotics, healthcare, and precision instrumentation.

Differentiator

Problem solved

Functional benefit

Brands

• ORSONIC: Sapphire audio accessories brand
• EHIoT
• NAPHIA

Products and services

• Precision Jewel Parts Precision processed industrial gems including sapphire, diamond, ruby, ceramics, and specialized materials processed with nano-precision machining technology for semiconductor, watch, medical, and industrial applications.
• Sapphire Products Single crystal sapphire substrates, sapphire template substrates, sapphire windows, sapphire heat-resistant setters, sapphire plates, sapphire container tubes, and sapphire jewelry for semiconductor, optical, and watch manufacturers.
• Diamond Products Single crystal diamond wafers for next-generation semiconductors, achieving world-class large-area results, including 3-inch wafer production capability established in 2026.
• Bonding Tools Capillaries, wire holding devices, diamond push-up needles, and wedge bonding tools for semiconductor wire bonding applications.
• Precision Nozzles Precision nozzles and needles for dispenser applications in industrial precision machinery.
• Watch Components Watch bearing jewels, ceramic watch cases and bands, sapphire watch windows, and specialized sapphire tube cases for luxury timepiece manufacturers.
• Medical Precision Parts Blood analyzer components, ophthalmic ruby scalpels, plungers for analytical instruments, zirconia dental discs, and cell membrane observation units for medical device manufacturers.
• Optical Communication Components Fiber optic connection components including ferrules, sleeves, connectors, and adapters utilizing ceramic molding and ultra-precision processing technology for telecom and data center infrastructure.
• Ferrule and Sleeve Products Zirconia ferrules, single-mode ferrules, multi-mode ferrules, metal ferrules, custom ferrules, and split/solid sleeves for fiber optic connections.
• Expanded Beam Connector High durability and stability fiber optic connectors using expanded light beam technology for harsh-environment deployments.
• MEMS Optical Devices MEMS-based variable optical attenuators, optical switches, and tunable optical filters with long-term durability and repeatability for telecom networks.
• Fiber Array 1D fiber arrays for integration into optical devices and modules.
• DC Coreless Motors Low inertia, high-efficiency coreless DC motors for consumer electronics and industrial applications.
• Brushless Motors Brushless motors offering high reliability and efficiency for industrial and consumer applications.
• Geared Motors Spur and planetary gearheads for motor torque enhancement.
• Encoders Motor encoders for position and speed feedback.
• 4-Pole High Torque Motor 4-pole motors delivering high torque performance.
• Super Micro Motor Ultra-compact micro motors for miniaturized applications.
• Robot Joint Servo Motor Servo motors designed for robot joint applications.
• Collaborative Robot End Effector K³HAND End effector for collaborative robots enabling versatile automation tasks.
• Diaphragm Pump Precision diaphragm pumps for fluid handling applications.
• Optical Interference Inner Circumference Precision Measuring Machine Optical coherence tomography-based precision measurement system for inner circumference measurement in automotive applications.
• Dynalox No-Power Lock System No-power lock system providing holding force without energization, used in robotics applications.
• LTCC Substrates Low Temperature Co-fired Ceramic substrates for semiconductor and electronics packaging applications.
• Small Wafer Cleaning System Compact wafer cleaning equipment for semiconductor manufacturing processes.
• Microwave Power Amplifier Microwave power amplifiers for industrial measurement and communications applications.
• Power-free IoT Power Generation Device (EHIoT) Vibration-powered IoT power generation devices enabling battery-free wireless sensor networks under the EHIoT brand.
• Sapphire Audio Accessories (ORSONIC) Sapphire audio accessories including record needles (stylus) and cantilevers sold under the ORSONIC brand for high-fidelity audio playback.
• Medical Device ODM/OEM Services Over 50 years of experience providing medical device design and manufacturing (ODM/OEM) services for diagnostic, surgical, ophthalmic, dental, and analytical instrument makers.

Quantifiable outcome

• Achieved world-class large-area 3-inch single crystal diamond wafer production for next-generation semiconductors
• +2 more outcomes

Segments8 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Matsushita (株式会社 松風)coreStrategic or Co-development Partner · 21 May 2026Joint verification research partnership with Matsushita (dental company), Tosoh Corporation, and Mitsui Chemicals for dental materials development. The collaboration focuses on developing advanced dental materials and precision components.
• Tosoh (東ソー株式会社)coreStrategic or Co-development Partner · 21 May 2026Joint verification research partnership with Matsushita, Tosoh Corporation, and Mitsui Chemicals for dental materials development. Tosoh provides materials expertise in ceramics and specialty chemicals.
• Mitsui Chemicals (三井化学株式会社)coreStrategic or Co-development Partner · 21 May 2026Joint verification research partnership with Matsushita, Tosoh Corporation, and Mitsui Chemicals for dental materials development. Mitsui Chemicals contributes chemical materials expertise.
• Hiyama Industries (檜山工業株式会社)minorStrategic or Co-development Partner · 9 April 2026Business entrustment contract signed for outsourced manufacturing services. Hibyama Industries provides manufacturing capacity or specialized processing capabilities.
• Tokyo Metropolitan University (東京都立대학교)coreStrategic or Co-development Partner · 5 March 2026Research collaboration with Tokyo Metropolitan University Graduate School of Human Health Sciences and Tohoku University on radiation dosimeter research. Published two research findings on radiation measurement technology.

Scale indicators3 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Maxon Motor: Swiss manufacturer of high-precision DC coreless motors, brushless motors, and gearheads for robotics, medical devices, and industrial automation. Directly comparable to Orbray's small motors and motor units business.
• Faulhaber: German specialist in miniature and micro drive systems including DC coreless, brushless, and servo motors. Comparable to Orbray's DC coreless motor line and custom motor units for robotics and medical applications.
• Element Six: De Beers-owned industrial diamond manufacturer producing synthetic diamond and supermaterials. Directly comparable as one of the few suppliers of large-area single crystal diamond substrates for semiconductor and advanced applications.
• Mitsubishi Chemical (now MCJ / Mitsubishi Chemical Group): Japanese chemical and materials company with sapphire, diamond, and other advanced industrial gemstone operations. Directly comparable to Orbray's synthetic sapphire and diamond substrate manufacturing.
• Maruwa: Japanese manufacturer of ceramic substrates, packages, and electronic components, with overlap in ceramic molding, LTCC substrates, and precision ceramic parts supplied to semiconductor and RF customers.
• Swiss Jewel Company: US manufacturer of precision synthetic jewel bearings (ruby, sapphire) and assemblies. Closely comparable to Orbray's heritage industrial jewel business and watch bearing jewels.
• Seiko Group (Seiko Instruments / Seiko Watch): Japanese watchmaker and precision components supplier using sapphire watch windows and precision jewel bearings. Comparable in watch bearing jewels, sapphire windows, and ceramic watch cases.
• Sumitomo Electric Industries: Diversified Japanese materials group with sapphire substrates, optical fiber, and compound semiconductor materials. Closely comparable across Orbray's sapphire, optical communication, and industrial gemstone product lines.

Broad incumbents

• Kyocera: Major Japanese ceramics and electronics manufacturer producing precision ceramic components, substrates, and semiconductor packages. Broadly comparable in precision ceramics and substrates, though at much larger scale.
• Coherent Corp (formerly II-VI): Large US-based semiconductor and optical materials supplier with sapphire substrates, diamond, and compound semiconductor materials. Overlaps with Orbray's sapphire substrate and optical component business at much greater scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/orbray_jp
• YouTubeyoutube.com/@Orbray_channel
• Facebookfacebook.com/orbray.jp
• Instagraminstagram.com/orbray_official

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Adamant Namiki Precision Jewel