Mineral Gear Oil

Mineral Gear Oil Advantages

CORFIN GEAR, with its specially developed formulation for mechanisms operating under heavy-duty conditions and high pressure, maximizes force transmission between systems. Thanks to its extreme pressure (EP) additives, it forms a durable film on metal surfaces, minimizing friction and effectively preventing wear. Its high viscosity index ensures the product maintains its form even at varying operating temperatures, delivering stable performance both at startup and during continuous operation.

With superior corrosion protection and rust-preventive properties, this mineral oil extends the service life of gearboxes and bearings, while its non-foaming formulation ensures an uninterrupted lubrication cycle. Catering to a wide range of applications—from heavy-duty reducers to infinite gear systems, and from chains to sliding bearings—it reduces operating costs and prevents unplanned downtime. Its structure, which retains its properties under load, enables equipment to operate safely in harsh industrial environments.

Mineral Gear Oil Features

Does not form foam
Reduces friction
Prevents abrasions
They do not lose their properties under load
Viscosity - Temperature relationship is very good.

Technical Specifications

The technical specifications of CORFIN Gear Oil, based on laboratory test results, are listed below. All values were measured under standard test conditions.

ANALYSIS	STANDARD	ISO VG 46	ISO VG 68	ISO VG 100	ISO VG 150	ISO VG 220	ISO VG 320	ISO VG 460	ISO VG 680
Color	Visual	Yellow Brown	Yellow Brown	Brown	Brown	Brown	Brown	Brown	Brown
Appearance	Visual	Clear Bright	Clear Bright	Clear Bright	Clear Bright	Clear Bright	Clear Bright	Clear Bright	Clear Bright
Viscpsity (40 °C)	ASTM D445	46	68	100	150	220	320	460	680
Viscosity Index	ASTM D2270	95	95	97	95	98	>100	>100	>100
Flash Point (°C)	ASTM D92	>250	>250	>250	>250	>250	>250	>250	>250
Pour Point (°C)	ASTM D97	<-20	<-20	<-20	<-20	<-20	<-15	<-15	<-15
Copper Corrosion (3h-100°C)	ASTM D130	1a	1a	1a	1a	1a	1a	1a	1a
Foam Characteristics (24-93.5°C)	ASTM D892	5 – 0	5 – 0	5 – 0	10 – 0	10 – 0	10 – 0	10 – 0	10 – 0
Density (20°C-g/ml)	ASTM D1298	0,84	0,84	0,85	0,85	0,86	0,86	0,88	0,9
Rust Test	ASTM D665	Pass	Pass	Pass	Pass	Pass	Pass	Pass	Pass
Abrasion Protection 392N (40kg),1200 rpm, 75°C ASTM	D4172	max. 0,35	max. 0,35	max. 0,35	max. 0,35	max. 0,35	max. 0,35	max. 0,35	max. 0,35

Mineral Gear Oil Frequently Asked Questions

Gear oils keep gears lubricated to reduce friction and help prevent wear and tear. The oils adhere to gears even when exposed to high heat and friction and resist water to help protect metal gears from corrosion. You can use these gear oils in automotive applications such as transmissions and axles, and in manufacturing and production facilities. Corfin gear oil offers lubricants for a wide range of gears, including spur, helical, worm, spiral bevel and hypoid gears. Protecting your gears with grease is key to preventing metal wear and corrosion as well as common causes of failure such as tooth breakage. Our specialty lubricants improve gear performance. Prevents friction and wear Protects against corrosion and oxidation Reduces noise and heat generation Extends component service life Shields against dust and deposits.

Enclosed gears are typically contained in a gearbox or other device where the gears can be flushed or lubricated with a liquid lubricant. Gears present a different challenge than other lubrication applications. In non-gear applications, moving surfaces experience sliding or rolling motion, while gear teeth experience rotational and sliding motion simultaneously. In addition to lubricating the gear teeth, the gear oil must also protect the bearings inside the housing. In addition, industrial gears are expected to operate under high heat and load conditions, and often in environments contaminated with dirt, process debris, and water. Without proper protection, gears and bearings will wear prematurely. You will need to replace parts more frequently, change oil more often, and may be faced with periods of equipment downtime.

When you are looking for a gear oil that will protect your transmission, you need to make sure that you are using the right quality. While this can be learned from manuals, it’s useful to understand the meaning behind gear oil grades and the differences between them. You need to know everything from base oil grades to additives and general gear oil rating systems. Gear oil is made up of two critical components: base oil and additives. Additives impart desirable properties and suppress undesirable ones. The additive package is the backbone of the lubricant’s performance, and a strong backbone will provide the performance and protection you need. There are three key characteristics to consider when selecting a gear oil: 1- Gear oil must remain thermally stable and not oxidize at high temperatures, preventing the formation of sludge or varnish. Preventing oil oxidation extends draining and drain intervals. 2- If you have an enclosed gear application that is heavily loaded or subject to shock loads, you need a gear oil with extreme pressure properties. Gear oil with EP additives will protect the gear surfaces from extreme pressures. 3- The gear oil must combat contaminants entering the system, especially water. The oil must be able to de-emulsify the water so that it can be easily removed from the gearbox.

Higher speeds and loads increase temperatures, which can degrade the lubricant and consequently the performance of the gear set. The use of anti-wear, anti-corrosion and extreme pressure (EP) additives in Corfin gear oils provides extra protection under these extreme conditions. EP additives in Corfin gear oils contain inactive sulfur, which prevents abrasive attack on the gear surface without corroding or softening yellow metals. The inactive sulfur forms a protective chemical layer on the metal surface that minimizes the potential for severe wear and welding. Lubricants with EP additives have greater film strength to reduce friction, protect your gears from wear and prevent shock loading.