Semi-synthetic Cutting Fluids / HLJH - a professional manufacturer and supplier of cutting oil in Taiwan.

Semi-synthetic Cutting Fluids / HLJH - a professional manufacturer and supplier of cutting oil in Taiwan.

Semi-synthetic Cutting Fluids

Semi-synthetic Cutting Oils

Semi-synthetic cutting fluids, also known as semi-synthetic coolants or semi-synthetics, are a category of metalworking fluids that offer a balanced combination of properties found in both water-based and oil-based cutting fluids. They are widely used in machining and metalworking operations to enhance tool life, improve surface finish, and maintain machining efficiency.

Semi-synthetic cutting fluids are particularly popular in industries where versatility and performance are essential. As a manufacturer and supplier of metalworking fluids, we offer the premium semi-synthetic cutting oils for machining of ferrous and non – ferrous metal and alloys that form a translucent emulsion when mixed with water.


Semi-synthetic cutting oils blend the strengths of mineral oil and synthetic components. This combination results in a versatile cutting fluid that balances lubrication, cooling, and environmental considerations. Semi-synthetic oils contain 30% to 50% mineral oil, and have extreme pressure additives and frictional modifiers that offer extended tool life, improved surface finishing, heat dissipation and better emulsion service life. It resists bacterial attack to control the emulsion stability with excellent rust and corrosion protections.

Water-based cutting fluids have surface-active additives and good cleaning properties. However, they may tend to foam up a bit during machining. BUT, semi-synthetic cutting oil is always best seller which has low foaming and dissipating heat faster falls between the soluble cutting oil and synthetic fluids. Some people use the semi-synthetic ones due to their ability to combine the benefits of both soluble cutting oil and synthetic cutting fluids.

Semi-synthetic cutting oils stand as a testament to the ingenuity of modern manufacturing solutions. Their ability to balance lubrication, cooling, and environmental considerations makes them a valuable asset for industries seeking efficiency, precision, and sustainability in their metal machining operations.

For good lubrication and tool life, most heavy duty soluble cutting oils have added chlorine to enhance extreme pressure machining. However, MORESCO series and WILL AIE series emphasized products without chlorine additives that are not harmful for human health.


Ready to learn more? Take a look at our metal cutting fluid-specific products below. Reminder, when you are facing the foaming issue, you can get rid of foam in a coolant tank "temporarily" by adding a defoamer. Or ask for water-based cutting oil which has good anti-foamimg ability by the cutting oil provider.

At Hai Lu Jya He, our expert team is dedicated to assisting you in selecting the perfect cutting oil for your equipment. Contact us (+886-4-25332210) today to discover how our metalworking oils can enhance your machinery's efficiency, durability, and overall performance.

Semi-synthetic Cutting Oils

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WILL AIE-329 - WILL AIE-329 cutting fluid has the excellent lubricating, cooling, washing abilities and good rust protection.
WILL AIE-329
Semi-Synthetic Coolant of Taiwan Technical Production

WILL AIE-329 emulsion cutting fluid is used in many industries such as hardware parts, bike...

Details
WILL AIE-73 - WILL AIE-73 cutting fluid has the excellent lubricating, cooling, washing abilities and good rust protection.
WILL AIE-73
Chlorine-Free Eco Semi-Synthetic Cutting Oil

WILL AIE-73 is a chlorine-free content semi-synthetic metalworking coolant formulated for grinding,...

Details
WILL AIE-75 - WILL AIE-75 cutting fluid has the excellent cooling, washing abilities and good rust protection.
WILL AIE-75
Chlorine-Free Eco Semi-Synthetic Cutting Oil

WILL series is one of the trademark for HAI LU JYA HE's cutting fluids line. WILL AIE-75 semi-synthetic...

Details
WILL CH-370 - WILL CH-370 cutting fluid has the excellent cooling, washing abilities and good rust protection.
WILL CH-370
Semi-Synthetic Coolant of Taiwan Technical Production

WILL series is one of the trademark for HAI LU JYA HE's cutting fluids line. One of semi-synthetic...

Details
MORESCO BS-6S - MORESCO BS-6S cutting fluid has the excellent cooling, washing, defoaming performances.
MORESCO BS-6S
Chlorine-Free Eco Semi-synthetic Cutting Oil

MORESCO BS-6S semi-synthetic coolant which is called all-purpose coolant, and used in many...

Details
Result 1 - 5 of 5

Semi-synthetic Cutting Oils - Semi-synthetic Cutting Fluids | Taiwan-Based Metalworking Fluid Manufacturer & Supplier For 39 Years | HLJH

Located in Taiwan, HAI LU JYA HE CO., LTD has been an industrial lubricant manufacturer and supplier. Main products, include Semi-synthetic Cutting Oils, metalworking fluids, industrial lubricants, soluble cutting oils, semi-synthetic cutting oils, synthetic cutting fluids, neat cutting oils, rust preventive oils, slideway oils and hydraulic oils, which can reach 150 tons of cutting fluids per month.

HAI LU JYA HE Co., Ltd. (HLJH) have been focusing on manufacturing and marketing the industrial lubricants more than 30 years. Our fundamental belief is to make a harmful, friendly with lives, businesses, and leaving a lasting legacy for generations to come. We offer metalworking fluids (water-based cutting fluid, neat cutting oil), rust preventive oil, hydraulic oil, slideway oil, spindle oil, gear oil and so on that cover the whole industrial lubricant value chain. Our fundamental belief is to offer harmful and friendly products such as water-based cutting oils, neat cutting oil, rust preventive oil, hydraulic oil, slideway oil, spindle oil, gear oil and so on that cover the whole industrial lubricant value chain.

HLJH has been offering customers high-quality metalworking oils and fluids, both with advanced technology and 39 years of experience, HLJH ensures each customer's demands are met.