- Overview:
Heavy-duty industrial closed-type gear oil is a high-performance lubricating oil carefully developed to meet the stringent lubrication requirements of closed-type industrial gear transmission systems under heavy-duty working conditions.This product uses deeply refined high-quality base oils and incorporates a variety of high-performance additives that have been rigorously screened and scientifically compounded, including highly effective extreme pressure anti-wear agents, powerful antioxidants, high-quality rust inhibitors, efficient anti-foaming agents and viscosity index improvers, etc.


Super extreme pressure and anti-wear performance, with outstanding anti-wear protection for gears under harsh operating conditions, prolonging the service life of the equipment.
Good thermal oxidation stability, long service life of oil.
Good water separation.
Good anti-corrosion and anti-rust ability.

It is applicable to closed industrial gear transmission devices that are faced with harsh working conditions like high load, strong impact and frequent start-stop in industrial fields such as mining, metallurgy, building materials and electric power.

GB 5903-2011
Class specification:
Quality class: L-CKD
Specifications: 68 100 220 320 460 680
Packing form: 170kg 18L 16L
Support OEM and ODM customization services.
Warm Tips: Customized production can be carried out based on customers' requirements. If you want to make a purchase, please contact us!
project | Product Parameters | ||||||
Viscosity Grade | 68 | 100 | 150 | 220 | 320 | 460 | 680 |
Kinematic Viscosity at 40ºC | 68.2 | 103.2 | 150.1 | 222.3 | 319.1 | 460.6 | 680.7 |
Viscosity Index | 101 | 103 | 104 | 106 | 107 | 107 | 108 |
Flash Point (Open ), ºC | 221 | 225 | 228 | 228 | 230 | 231 | 233 |
Pour Point, ºC | -16 | -13 | -14 | -13 | -11 | -12 | -10 |
Moisture Content, % | None | ||||||
Mechanical Impurities, % | None | ||||||
Demulsibility, at 54ºC (min) | 7 | / | / | / | / | / | / |
Demulsibility, at 82ºC (min) | / | 9 | 12 | 13 | 16 | 17 | 18 |
Water in Oil (Volume Fraction) | 1.1 | 1.2 | 1.4 | 1.5 | 1.5 | 1.7 | 1.8 |
Emulsified Layer, mL | 0.5 | 0.5 | 0.6 | 0.8 | 0.9 | 0.9 | 0.9 |
Total Separated Water, mL | 80.0 | 80.0 | 80.0 | 80.0 | 80.0 | 80.0 | 80.0 |
Jining Power Oil Industry Co., Ltd. was founded in 2002. The company is located in Jining, Shandong, which is known as the hometown of Confucius and Mencius in China. Having been deeply engaged in the lubricating oil industry for 23 years, it is a large-scale lubricating oil production base with significant influence and a relatively large size in China.

The products of the company cover six major categories and more than 180 varieties, including automotive lubricants, industrial lubricants, construction machinery lubricants, mining lubricants, and antifreeze. They are widely applied in numerous fields such as automobiles, machinery, metallurgy, mining, petroleum processing, electronics, and bearings.
The company holds multiple national patents and qualification certifications. It also has a professional research and development team that can continuously carry out technological innovation, optimize product formulas, improve product performance, and ensure that the company's products always remain at the leading level in the industry.
We will continue to uphold the business philosophy of "Quality First, Innovation and Development", and continuously provide customers with high-quality lubricant products and services, making greater contributions to promoting the development of the lubricant industry.




Q1: Are you a trading company or a manufacturer?
A: We are a professional lubricating oil manufacturer with 23 years of industry experience. Our factory is located in Jining, Shandong, the hometown of Confucius and Mencius in China.
A: The delivery time is approximately 10 days after the down payment is made. The specific delivery time depends on the products and quantities in the order.
A: According to our sales policy, we require a telegraphic transfer of 30% - 40% in advance, and 60% - 70% of the balance should be completed before shipment. We can provide real photos or videos of the goods before the balance is paid.
A: FOB, CFR, CIF or EXW.
A: It is usually in 200L metal drums, PE bags, cans, or drums of different sizes. It depends on your product requirements. We will do our best to meet the needs of our customers.
A: Certainly. We will provide free samples, but you need to pay for the freight.
A: We can. We can cooperate in this way to meet the requirements of orders. If necessary, please provide samples, which will help us conduct tests.
A: The company has an independent laboratory and testing equipment, and has established a strict quality control system. Every link, from the procurement of raw materials to the delivery of finished products, is strictly tested and monitored. All products meet or exceed national and industry standards.
A: We have a professional sales and service team that can provide you with timely and accurate technical support and solutions. Whether you have problems in product selection, during the use process, or need to customize lubricating oil products with special specifications, we will serve you wholeheartedly.