Glossary

INDEX

INDEX

B

Ball bearings

Ball bearings comprise an outer ring, inner ring, balls, retainers, shields and snap rings. Essential to high-precision rotary components, ball bearings determine rotational accuracy. Minebea has a high global market share in miniature and small sized ball bearings with 22mm or less in external diameter.

image : Miniature & small sized ball bearings

Blowers

Blowers rotate fans to cool the inside of office automation equipment by directing heat outside. These motors have more high power to cool than normal type of fan motor.

For more detailed information, please click Blowers
image : Blowers

Brush DC motors

Brush DC motors are the DC (direct current) motor with brush (a part supplying an electric current through a commutator to a turning armature). These motors are mainly used for driving digital AV equipment and PC peripherals, and for automotive electronic components.

For more detailed information, please click Brush DC motors
image : Brush DC motors

Brushless motors

Brushless motors include small brushless motors, power brushless motors and polygon mirror scanner motors. Small brushless motors are used in driving and electrical components for digital AV equipments and PC peripheral devices. Power brushless motors are used in mechanical driving for photoconductive drums, paper feeds, and toners in copiers and other office automation equipments. Polygon mirror scanner motors are used in laser writing in digital copiers and other such devices to scan laser beam radiated from LD (laser diode) into photoreceptor.

For more detailed information, please click Small brushless motors
For more detailed information, please click Power brushless motors
For more detailed information, please click Polygon mirror scanner motors

Bushings

Bushings are used in a variety of mechanical moving parts on both rotary and fixed wing aircraft. They are used in helicopters, primarily in the main rotor axes, and in landing gear for fixed wing aircraft. Bushings apply originally-developed Teflon liner to the inside of the bore and edge faces to allow for rotation without the need for lubricating agents.

For more detailed information, please click Bushings
image : Bushings

D

DC brush motors

DC brush motors are the DC (direct current) motor with brush (a part supplying an electric current through a commutator to a turning armature). These motors are mainly used for driving digital AV equipment and PC peripherals, and for automotive electronic components.

For more detailed information, please click Brush DC motors
image : Brush DC motors

E

Electronic devices

Electronic devices include Lighting devices, hybrid components and other electronic devices.

For more detailed information, please click Lighting devices for LCDs

Electronic Devices and Components business

Electronic Devices and Components business consists of HDD spindle motors, information motor (fan motors, stepping motors, brush DC motors and brushless DC motors), precision motors, industrial machinery and special devices, global motors and electronic devices (including LED backlights and hybrid components (EMS)) and sensing devices (measuring components).

EMS (Hybrid components, Hybrid products)

Hybrid components and hybrid products that uses the technology of Minebea and combined machined, rotary and electronic components, etc. are called EMS (Electro Mechanics Solutions). For instance, there are HMSM or Heat Management System Module (Cooling system for data communications/processing equipment) that combines "Fan Motor" + "Mechanical component" + "Electronic Circuits" + "Software" and products such as "Motor" + "Gear Box", etc.

For more detailed information, please click Fan units

F

Fan motors

Fan motors rotate fans to cool the inside of PCs and other office automation (OA) equipment by directing heat outside. Minebea manufactures high-end fan motors with Minebea ball bearings, and fan motors with long-life sleeve bearings.

For more detailed information, please click Fan motors
image : Fan motors

Fasteners

Fasteners, including bolts, nuts and rivets mainly used for aircraft and automobiles, are mechanical components used to fasten one object to another.

For more detailed information, please click Fasteners
image : Fasteners

Fluid dynamic bearings (FDB)

In a fluid dynamic bearing (FDB), a thin layer of oil or other lubricant is injected between the shaft and sleeve. The structure of the bearing features a rotating shaft, which generates a hydrodynamic force, causing the shaft to rotate. The non-contact construction of this bearing makes it particularly suited for improving rotational accuracy and enhancing quietness and robustness.

image : Fluid dynamic bearings (FDB)

Force sensors

Used in bath scales, various other types of scales, game consoles, home appliances, load sensors, etc., these sensors are sensors for mass production that use strain gages.

For more detailed information, please click Force sensors
image : Force sensors

H

Hard Disk Drive (HDD) spindle motors

Hard Disk Drive (HDD) spindle motors are what cause the disks in HDDs to rotate. The precision of these motors determine the capacity and speed of HDDs, making these components critical to HDD performance. Accordingly, these motors must offer superior performance in terms of rotational speed and low Non-Repeatable Run Out (NRRO).

For more detailed information, please click HDD spindle motors
image : HDD spindle motors

High-pressure blowers

High-pressure Blower developed for industrial machines such as printing machines, to blow and or inhale printing papers by highly efficient airflow.

For more detailed information, please click High-pressure blowers
image : High-pressure blowers

HMSM (Heat Management System Module)

Minebea integrates all aspects of thermal management expertise with capabilities in fan motor, power management and controller design. Minebea offers this technology as "Heat Management System Module (HMSM)" to the global market.
HMSM is one of EMS (Electro Mechanics Solutions).

For more detailed information, please click Fan units
image : Fan units (HMSM)

Hybrid components, Hybrid products (EMS)

Hybrid components and hybrid products that uses the technology of Minebea and combined machined, rotary and electronic components, etc. are called EMS (Electro Mechanics Solutions). For instance, there are HMSM or Heat Management System Module (Cooling system for data communications/processing equipment) that combines "Fan Motor" + "Mechanical component" + "Electronic Circuits" + "Software" and products such as "Motor" + "Gear Box", etc.

For more detailed information, please click Fan units

I

Information motor

Information motor consists of fan motors, stepping motors, brush DC motors and brushless DC motors (small brushless motors, power brushless motors and polygon mirror scanner motors).

J

JAPAN 3D DEVICES Co., Ltd. (J3DD)

In July 2014, Minebea acquired JAPAN 3D Devices Co., Ltd. (J3DD), a manufacturer of high precision 3D molded thin glasses, including concave mirrors (reflectors) for use in head-up displays ("HUDs") for automobiles, through third party allotment. At the time, J3DD was a subsidiary of Okamoto Glass Co., Ltd.. Our new plant in Kashiwazaki, Niigata in February 2015 was completed.
J3DD has established a mass production system of glass concave mirrors for HUDs so that glass concave mirrors with superior heat resistance and cost performance will replace the conventional concave mirrors for HUDs that mainly used plastic injection parts.

L

Large mechanical parts

Built up from bearings and machined parts, and used in many areas of aircraft assembly joints, these parts allow for significant savings in assembly time and cost for our customers.

For more detailed information, please click Precision machined parts for aircraft
image : Large mechanical parts

LCD cluster for automobiles

It is a display for automobiles attached to instruments such as speedmeters in the driver front.

LED backlights

Minebea's lighting devices are the parts used for fine color liquid-crystal displays (LCDs) for cellular telephones, smart phones, tablet PCs and personal digital assistants (PDAs). As LCDs cannot generate light on their own, backlight systems which consists of a reflector, a guide plate, and prism sheets that illuminate from behind the displays are essential. The system comprise white light-emitting diode (LED) chips and transparent plastic panel made from micron-order prisms for controlling light.

For more detailed information, please click Lighting devices for LCDs
image : LED backlights

Lighting devices

Minebea's lighting devices are the parts used for fine color liquid-crystal displays (LCDs) for cellular telephones, smart phones, tablet PCs and personal digital assistants (PDAs). As LCDs cannot generate light on their own, backlight systems which consists of a reflector, a guide plate, and prism sheets that illuminate from behind the displays are essential. The system comprise white light-emitting diode (LED) chips and transparent plastic panel made from micron-order prisms for controlling light.

For more detailed information, please click Lighting devices for LCDs
image : LED backlights

Load cells

Minebea manufactures load cells that use strain gage to convert tension, compression or mass into electric signals. Load cells, connected to various measuring devices for measuring purposes, display, record, control and keep track of the loads.
Applications are diverse varying from small sensors for use in electronic scales, bath scales, game consoles and home electronics to those for general industrial uses, such as truck scales, measuring systems in production lines and tank scales.

For more detailed information, please click Load cells
image : Load cells

M

Machine tool bearings

These bearings are used primarily in machine tools, which demand bearings made with materials and structures that deliver outstanding durability and resistance to heat.

image : Machine tool bearings

Machined components business

Machined components business consists of miniature and small-sized ball bearings, rod-end bearings and fasteners and pivot assemblies for Hard Disk Drives.

Magnetic clutches and brakes

Magnetic clutches use electric magnets produced to lock or unlock the engine and the transmission input shaft, facilitating or terminating the flow of power. Magnetic brakes use electric magnets to accelerate, decelerate or stop rotation.

For more detailed information, please click Magnetic clutches and brakes
image : Magnetic clutches and brakes

Measuring components (Sensing devices)

Measuring components (Sensing devices) include strain gages and load cells, etc.. These are the products which measure weights and are used for measurement of a track loaded with loads, bag filling in the factory and rockets. These are also used for bath scales, cars and game controllers, etc. at home. *Measuring components have changed their name to sensing devices in April 2016.

For more detailed information, please click Measuring Components
image : Measuring components

Micro actuators

Micro actuators are small diameter / high speed PM stepping motors.
Small diameter stepping motor are used in lens barrels of digital cameras and optical aberration of Blu-ray disc drives. These stepping motors are small and thin, with high torque, and with more steps to improve in positioning accuracy.
We also line up high speed motors which use silicon steel metal. These are used in paper—feeding devices of printers, copy machines and other office automation equipments.

For more detailed information, please click Small diameter / High speed PM stepping motors
image : Small diameter / High speed PM stepping motors

Minebea Motor Manufacturing Corporation (MMMC)

Minebea Motor Manufacturing Corporation was founded by integration of Minebea Co., Ltd. and four operations of Motor Company of then Matsushita Electric Industrial Co., Ltd., including fan motors, stepping motors, vibration motors and brush DC motors in April 2004. (The company name has been changed to Minebea Motor Manufacturing Corporation from Minebea-Matsushita Motor Corporation since July 2007.)
Afterwards, the information equipment motor business of Panasonic Corporation was transferred to MMMC in April 2010. Therefore brushless DC motors (small brushless motors, power brushless motors and polygon mirror scanner motors) was newly added.
In February 2013, Minebea bought all 40% of Panasonic's holdings in MMMC to terminate the joint venture between the two companies. MMMC was merged into Minebea Co., Ltd. in April, 2013.

Miniature & small sized ball bearings

Ball bearings are machinery components, which comprise an outer ring, inner ring, balls, retainers, shields and snap rings. Miniature and small-sized ball bearings mean ball bearings, up to 22mm in external diameter. Essential to high-precision rotary components, ball bearings determine rotational accuracy.

For more detailed information, please click Miniature & small sized ball bearings
image : Miniature & small sized ball bearings

N

National Aerospace and Defense Contractors Accreditation Program (Nadcap)

Nadcap is a quality assurance, special process auditing and certification system developed in 1990 by the Performance Review Institute (PRI), a certifying organization operated by and for major aircraft and aircraft-engine manufacturers. At present, it is the world's only unified certification program in the aerospace field, and its certification is necessary in order to manufacture aerospace products requiring special processes.

NHBB

NHBB is the abbreviation for New Hampshire Ball Bearings, Inc. which is a U.S.A. subsidiary of Minebea.
Minebea acquired Reed Instrument Corp. (the present New Hampshire Ball Bearings, Inc., Chatsworth Plant) from SKF of Sweden and commenced local production in the United States in 1971. In 1985, Minebea also acquired New Hampshire Ball Bearings, Inc. which was listed on the American Stock Exchange.

  • Chatsworth Plant: Manufactures small ball bearings for aerospace, dental, medical and industrial
  • Peterborough Plant: Manufactures large ball and roller bearings for aerospace
  • Laconia Plant: Manufactures rod-end & spherical bearings for aerospace
  • myonic GmbH: All the stocks are acquired in March 2009. Manufactures medical, dental and industrial bearings
  • CEROBEAR GmbH: All the stocks are acquired in July 2013. Manufactures ceramic bearings to be used in a wide variety of industries such as aerospace, medical and semiconductor manufacturing equipment

O

Other business

The classification of "Others" is the operating segment, which is not included in the reportable segments, and its products are mainly dies and parts produced in-house.

P

Perpendicular magnetic recording (PMR)

A method to arrange magnetic substances so that magnetic field may vertically turn to magnetic record side. Adopting this method in the hard disk drive made its large capacity recording possible with stability and high density.

Pivot assemblies

Pivot assemblies are fitted into the base of actuators to position HDD magnetic heads. This product combines ball bearings between shaft and sleeve.

For more detailed information, please click Pivot assemblies
image : Pivot assemblies

PMA (Precision mechanical assemblies)

Various composite assemblies using Minebea's precision bearings.

For more detailed information, please click Precision mechanical assemblies
image : Precision mechanical assemblies

Polygon mirror scanner motors

Polygon mirror rotates at high speed to scan laser beam radiated from LD (laser diode) into photoreceptor. These motors are used in laser writing in digital copiers and other such devices.

For more detailed information, please click Polygon mirror scanner motors
image : Polygon mirror scanner motors

Power brushless motors

These motors are used in mechanical driving for photoconductive drums, paper feeds, and toners in copiers and other office automation equipments.

For more detailed information, please click Power brushless motors
image : Power brushless motors

Precision motors

Precision motors include magnetic clutches, resolvers and motors for automobile adaptive cruise control sensors.

R

Resolvers

The rotary angle detector, torque sensor to which motor technology is applied, mainly used for planes and automobiles.

For more detailed information, please click Rotation angle sensors
image : Resolvers

Rod end & spherical bearings

Used in aircraft components, such as wing flaps, engine and wing mounts and hatches, rod-end spherical bearings function as joints. These bearings are also used extensively in helicopters, trains, automobiles, electric power plant, construction machinery, ships, attraction equipment and space-related products.

For more detailed information, please click Rod end & spherical bearings
image : Rod end & spherical bearings

Roller bearings (Related to aircraft engine)

Roller bearings, which feature a roller housed between the inner and outer rings, are used primarily in aircraft engine.

For more detailed information, please click Roller bearings (Related to aircraft engine)
image : Roller bearings (Related to aircraft engine)

Roller bearings (Related to aircraft flight control)

Roller bearings are self-aligning bearings with roller held by retainer between inner race and outer race. They can take the form of single or double row bearings. The main characteristic of this product is the low starting torque when compared to ordinary spherical and rod end bearings. The technology lends itself to critical aircraft applications such as flight control.

For more detailed information, please click Roller bearings (Related to aircraft flight control)
image : Roller bearings (Related to aircraft flight control)

S

Sensing devices (Measuring components)

Sensing devices (Measuring components) include strain gages and load cells, etc.. These are the products which measure weights and are used for measurement of a track loaded with loads, bag filling in the factory and rockets. These are also used for bath scales, cars and game controllers, etc. at home. *Measuring components have changed their name to sensing devices in April 2016.

For more detailed information, please click Measuring Components
image : Measuring components

Small brushless motors

Small brushless motors are used in driving and electrical components for digital AV equipments and PC peripheral devices.

For more detailed information, please click Small brushless motors
image : Small brushless motors

Stepping motors

These motors rotate at fixed angles by digitally controlled electronic pulses and are mainly used in the paper-feeding devices of printers, copy machines, facsimiles and similar equipment. Hybrid-type stepping motors combine a rotor with a permanent magnet and a magnetic body using ball bearings. PM stepping motors use a permanent magnet (PM) as a rotor.

For more detailed information, please click Hybrid type stepping motors
For more detailed information, please click PM stepping motors
image : Hybrid type stepping motors
Hybrid type stepping motors image : PM stepping motors
PM stepping motors

Strain gages

Strain gages consist of a very fine and thin metallic foil etched in a grid pattern, which is bonded to a device and used to measure the strain, or amount of deformation of the device when load or pressure is applied. The resulting electrical output is proportional to the strain.
Because these strain gages are so small that they are negligible in mass, they excel in sensitivity, stability and fatigue with no inertial effect. They are also an easy-to-handle device, whose operating temperature range is wide. The strain gages can be used to measure the strain of all kinds of materials, regardless of metal or plastic.

For more detailed information, please click Strain gages
image : Strain gages

T

TRDC (Tokyo Research and Development Center)

In 2014, Minebea had established Tokyo Research and Development Center in its new headquarters building under direct control by our president, in order to boost the development capabilities of EMS (Electro Mechanics Solutions). Minebea has been engaged in development of production technologies and new products at its existing research & development centers in Japan. The new TRDC established in Tokyo, where a number of universities, research centers, and other private research and development institutions are located, is expected to enhance cooperation with various institutions, each specializing in different fields.
Minebea can also leverage the TRDC as a center connecting Minebea's overseas research centers and those in Japan, combining various businesses across the Company and enhancing synergy. This will harness the technological strengths in ultra-precision machining technology, small motors and sensors to accelerate Minebea's activities to make inroads into markets for value-added mechatronics business.

V

Vertically integrated manufacturing system

Competitive advantage for Minebea is its vertically integrated manufacturing system, which encompasses processes-including design and research; production and maintenance of dies; production of parts for in-house use; and assembly and testing. This system gives Minebea a sharp edge in terms of quality, supply capabilities, lead time and manufacturing costs.

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