Japan's Seiko NSK Will Increase Production Of Electric Vehicle Bearings

According to the news on December 29, 2022, Japan's Seiko will implement an equipment investment of 30 billion yen in the next five years to increase the production of bearings for electric vehicles such as pure electric vehicles (EV). The annual scale of tens of billions of yen has increased to 120 billion yen.

In Japan, Seiko will increase facilities at the Ishibe Plant in Konan City, Shiga Prefecture, which produces automotive wheel bearings. The company will also invest in equipment at a plant in Mexico that produces transmission bearings for the North American market in response to increased production of pure electric vehicle products.

Akitoshi Ichii, president of Seiko, said that for electric vehicle bearings, "orders are currently expanding mainly in Europe and China, and domestic purchases in Japan are also increasing smoothly."


 

Japan's Seiko will disperse the production of electric vehicle bearings to Southeast Asia, investing nearly 20 billion yen to build factories

As early as July 2022, Japan Seiko (NSK) decided to build a new bearing factory embedded with small motors in Southeast Asia, with an estimated investment of about 20 billion yen, and strive to put it into operation in 2024.

The small motor market is expected to grow in the future due to the shift from gasoline vehicles to electric vehicles (EV) and the expansion of investment in data centers. Japan's Seiko will increase production capacity in response to demand growth.

In the medium-term business plan released by Seiko Japan in May, it stated that by 2026, the operating income of the "industrial machinery business" composed of products for motors and machine tools will increase by about 100 billion yen compared with 2021, reaching 450 billion yen. billion yen. Japan's Seiko will seize the demand from small motors through the construction of new bases and the enrichment of product lines, and plans to increase about 30 billion yen in the future.

NSK Develops New Method to Prevent Electric Corrosion in EV Drivetrains

NSK is developing a new, cost-effective method to prevent electrical corrosion in drive trains in electric vehicles,media reported.

Based on a unique, patented method of producing plastic over-moulded deep groove ball bearings, electric vehicle manufacturers can use Save a lot of money.

Suitable for inner and outer rings, the thickness of the patented insulating layer is 0.7-1.2mm.

Due to conditions such as frequent inverter switching across multiple phases, parasitic currents can take multiple paths through the EV motor. Certain types of motor construction also cause various bearing currents to flow, including rotor ground bearing currents, circulating bearing currents and EDM (Electronic Discharge Machining) currents.

Especially EDM currents pose a serious risk to bearings, mainly due to arcing at certain voltages. These arcs (load charging) are uncontrolled discharges at relatively high currents, fundamentally changing the morphology of the steel bearing rings and balls. In this case, the material melts and re-solidifies on the metal surface, so that ripples a few microns deep start to appear on the bearing raceways of the inner and outer rings. This tends to cause problems with excessive noise in the first place.

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