Industrial functional products and special products

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• Solenoid valves

Solenoid valves

Electromagnetic valves used mainly for oil pressure control and gas flow control for automobiles. With built-in resin components, they are compactly designed and highly reliable.

NOK’s solenoid valves, mainly used for oil pressure control for automobiles, excel in resistance to pressure. Incorporating resin components to a large extent, they are compact, lightweight, high-performance solenoids. These products are also suitable for hydrogen gas pressure control for fuel cell vehicles (FCVs). They are designed to be adequately resistant to vibration, high and low temperatures, and actuation, thus offering high reliability.

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• Actuators

Actuators

Used mainly for exhaust system control for automobiles. Our expertise regarding rubber materials and sealing techniques is applied effectively to develop the diaphragm, which constitutes the heart of this product.

NOK’s actuators have been developed chiefly for use in the exhaust systems of automobiles. They exhibit superior performance and high reliability even in harsh conditions. Our expertise regarding rubber materials and sealing techniques is fully incorporated into the diaphragm, which constitutes the heart of this mechanism, enabling high performance.

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• Accumulators

Accumulators

Pressure accumulators, a mechanism that uses the compressibility of nitrogen gas. They are used for capacity correction and pulsation absorption in fluidic circuits.

Accumulators are an essential function to enable the potential energy of fluids to act effectively, and maintain high-accuracy operations of oil, water and other fluidic circuits in a safe and economic manner. The principle of operation is based on the compressibility of nitrogen gas. The container is designed to accumulate fluid pressure, and release a large amount of pressurized fluid instantaneously, or absorb pulsation and impact pressure.
According to the method of separating the nitrogen gas from the fluid, accumulators are classified into two types: the bladder type and piston type. The bladder type is the more popular.

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• Metallic bellows

Metallic bellows

Used for equipment’s elastic joint sealing and displacement absorption. They excel in consistent displacement and corrosion resistance.

Metallic bellows exhibit resistance against highly corrosive fluids and radioactive fluids. They have been developed as ideal sealing alternative to elastomer and gasket materials to be used for equipment running under high-temperature and high-pressure conditions.
Actual applications range from sealing for Japanese liquid oxygen/liquid hydrogen rocket engine turbo-pumps, tokamak fusion test reactors, and vacuum equipment for semiconductor manufacturing, to nuclear equipment production lines, thus meeting advanced industrial, scientific and technological needs.

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• Couplings

Couplings

Diaphragm couplings developed for aircraft gas turbine engines. This product absorbs displacement to ensure proper torque transmission.

As machinery and equipment is growing in size and speed, couplings are expected to have lighter weight and lower bearing load. This requires this item to increase its abilities to absorb misalignment and enable durable dynamic balance during torque transmission, in order to prevent vibration and noise. Couplings produced by EAGLE INDUTRY CO., LTD. fully satisfy these requirements while minimizing need for maintenance, such as for oil feed and spin finishing, thereby allowing for streamlined and efficient line configuration.
Major applications include aircraft gas turbine engines and industrial-use turbines, compressors and other rotating equipment.

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• Carbon bearings

Carbon bearings

Carbon bearings used for electric water pumps mounted in electrified vehicles (xEVs). They have been developed applying our materials and tribology technologies built to produce cooling water sealing.

These items adopt NOK’s original carbon materials, which exhibit excellent resistance against heat, wear, corrosion, and dry sliding. They contain no hard materials, such as glass fiber, thus reducing wear of shafts and eliminating the need for surface hardening treatment (coating) for shafts. In addition, the high precision finished inner diameter allows for noise and torque reduction, thus enabling less power loss and smaller motor magnets.

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• Recoil starters

Recoil starters

Rope-operated manual starting devices for compact internal combustion engines. Used to start electric generators, lawnmowers, and farm engines.

Recoil starters are rope-operated manual starting devices for compact internal combustion engines, and are commonly used to start electric generators, lawnmowers, outboard motors, and farm engines. NOK’s recoil starters are highly rated for their durability, reliability, stable functionality and quality. They also offer a number of advantages, allowing for disassembly-free rope replacement, lubricant-free operations and less tendency to failure due to fewer components.

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• Products for household appliances

Products for household appliances

Fluid control equipment, including pressure control devices, flow-rate controllers, and flow-path switching units, that are incorporated into household appliances carrying water, gas, and other special fluids.

NOK has successfully integrated sealing and actuator techniques to provide fluid control equipment, such as pressure control devices, flow-rate controllers, and flow-path switching units, that are incorporated into household appliances carrying water, gas and other special fluids.
These products are used in fluid control equipment found in various electric home appliances, such as bathroom and kitchen control systems, air conditioners, and gas meters.

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• Compressor valves

Compressor valves

Valves to control the direction of cooling media flowing in compressors. There are two major categories: single-body machined components, such as suction valves and discharge valves; and various special high precision machined products.

NOK’s compressor valves control the direction of cooling media flowing in compressors used for car air-conditioners, room air-conditioners, cooling machines, and refrigerators.
NOK manufactures single-body machined components, such as suction valves, discharge valves, valve supports, and valve plates, as well as various special high precision machined products. Other related products include built-in oil strainers and flow control valves for compressors, which are assembled by NOK.

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• Special lubricants

Special lubricants

Long-life, highly reliable lubricants effective even under extreme conditions.

NOK markets special lubricants imported or manufactured by NOK Kluber Co., Ltd., a joint venture between NOK CORPORATION and Germany-based Kluber Lubrication LTD.
The special lubricants we deal in possess a strong resistance to very high and low temperatures, high speed, high load as well as tolerance to many types of chemicals. As such, they can demonstrate superior performance even under extreme conditions in which average lubricants will not function effectively. They also have only negligible effects on metals as well as resin and rubbers that have come into contact with the product, while boasting exceptionally long life.

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• GLEITPAN

GLEITPAN

Coating material created by a special mixing techniques.

GLEITPAN is a brand name for NOK’s coating materials produced by applying a special mixing techniques.
Coating the surface of mechanical components made of metal, resin, or other materials with GLEITPAN can increase resistance to friction, abrasion, rusting, and adhesion.