gear oil classification

The article "Gear Oil Classification and Selection" should appear in the box below, but if you do not see it, you can download it here. Keywordslubrication, lubricants, oil, synthetic oil, additives, basics, gear fundamentals. The designations are utilized by manufacturers to select lubricants for particular gear types and operating conditions. Like monograde engine oil SAE grades, monograde SAE gear oil grades use a single number, with gear oils for cold seasons using the identifier ‘W’ and oils for hotter, summer conditions using just a … These are Mack GO-J+ and Volvo 97310, although these numbers change every few years. SummaryToday gear drive operations have several options when selecting the proper lubricant for their gearboxes. High-Temperature Viscosities. Frictional modifiers and extreme pressure (EP) agents are not used. Designates the type of service characteristics of automobile spiral bevel and worm gear axles as well as some manually operated transmissions operating under such mild conditions of low unit pressures and sliding velocities in which straight mineral oil can be used satisfactorily. Gear Oil Selection Criteria. For example, most modern gearboxes require a GL-4 oil, and separate differentials (where fitted) require a GL-5 oil. These oils may be used in selected manual transmission and transaxle applications where MT-1 lubricants are unsuitable. As in the past, the primary lubricant used for gearbox lubrication is mineral oil. The designation API GL-5 denotes lubricants intended for gears, particularly hypoid (see note) gears, in axles operating under various combinations of high-speed/shock load and low-speed/high-torque conditions.

But with the advances in technology, synthetic hydrocarbons (PAOs) and polyglycols show very specific advantages in certain applications. Download our printable cheat sheet with BMW, Fiat, Ford, etc. Although API designations may be very useful when making general recommendations, manufacturer recommendations should always be consulted to ensure that the lubricant being considered is not prohibited by that manufacturer. Summary Today gear drive operations have several options when selecting the proper lubricant for their gearboxes. Such designs typically require protection from gear scoring in excess of that provided by API GL-5 gear oils. No attempt is made by the API classification system to classify gear oils by physical properties or test performance. The article "Gear Oil Classification and Selection" appeared in the May/June 1995 issue of Gear Technology. This designation is recommended for use in some manual truck transmissions. The designation API MT-1 denotes lubricants intended for non-synchronized manual transmissions used in buses and heavy-duty trucks.

This page gives an overview of the oil specifications, see also the measurement data of engine oils and gear oils over a wide temperature range. The designation API GL-6 denotes lubricants intended for gears designed with a very high pinion offset.

hbspt.cta.load(3951034, 'c99217f3-09e7-4751-bc3a-7739dac44a0e', {}); The How and Why of Lubricant Selection and Consolidation for Rotating Machinery, Guidelines for Determining the Cause of Gear Failures, Product Unboxing - The Conserver® Oil Purification Unit, Product Unboxing - AMETEK Spectro Scientific FerroCheck 2100, Advances in the Analysis of New and Used Lubricating Oils by High-Resolution ICP-OES, The Cost Effective Benefits of a High Performance Kidney Loop System, How to Cost Justify a Lubrication Program. No biggie... you can click here to AUTOMOTIVE GEAR LUBRICANT CLASSIFICATIONS SAE J306 (Gear Oils): Again, the classification is based on the lubricant viscosity measured at low and/or high temperatures. Fig. The high temperatures values are determined according to method ASTM D445. It also recognizes that some lubricants are suitable for a wide range of operating conditions and may be recommended for more than one service designation.

Designates the type of service characteristics of gears, particularly hypoid gears in passenger cars and other automotive equipment operated under high speed, shock load; high speed, low torque; and low speed, high torque conditions. Gearbox oils are classified by the American Petroleum Institute using GL ratings.

Relates to the type of service characteristics of gears, particularly hypoid gears operated under non-critical, moderate speed, shock load; high speed, low torque; and low speed, high torque conditions. Following are the automotive gear oil classifications: Designates the type of service characteristics of automobile spiral bevel and worm gear axles as well as some manually operated transmissions operating under such mild conditions of low unit pressures and sliding velocities in which straight mineral oil can be used satisfactorily. 1 shoes that a gear oil is a combination of a base oil and specific additives.

In order to choose the best lubricant for a gear set, the following criteria must be addressed: Viscosity – Often referred to as the most important property of a lubricating oil. Archive > 1995 > May/June 1995 > Gear Oil Classification and Selection. Download our printable cheat sheet with API, ACEA, ILSAC and JASO specifications, for only 0.95 USD. Mack and Volvo trucks (as well as others) have their own specifications that address some conditions beyond GL-5. Oxidation and rust inhibitors, defoamers and pour-point depressants may be utilized to improve the characteristics of lubricants for this service. Webinar: Flipping the Precision Gear Manufacturing Paradigm, Industrial Gear Lubrication with Lubrizol, Open Gear Lubrication Inspection with Mobil, Spraying to All Fields: Catching Up on Some Lubrication Trends and Issues, Solar Atmospheres Adopts Vacuum Oil Quenching Technology in 2020, FVA Offers Basics of Gearbox Design Online Seminar, Buehler Offers Back to Basics Metallography Webinar, AGMA Releases Publication on Lubrication of Industrial Gear Drives, Dillon Offers Pin Location Jaws for Air Chucks, Northfield Precision Offers Chucking System with No Air Tubes or Hoses, Big Kaiser Introduces Nirox High-Performance Drill, C-B Gear & Machine Expands Capability with 5-Axis Milling, Marposs Offers Minimicromar3 Gauge for Small Ground Components.

Oxidation and rust inhibitors, defoamers and pour-point depressants may be utilized to improve the characteristics of lubricants for this service. API began licensing oils against the SN PLUS classification on May 1, 2018. Automotive Lubricant Viscosity Grades: Engine Oils – SAE J 300, Dec. 1999. Friction modifiers and extreme pressure additives shall not be used. Describes a high EP oil intended for some non-synchronized manual truck and bus transmissions.

Viscosity Tables – Measurement data. SAE grades are used to label all sorts of lubricants, but for gear oils, only SAE numbers of 60 or above are used. specifications, for only 0.95 USD. Lubricants meeting the requirements of API MT-1 service provide protection against the combination of thermal degradation, component wear, and oil-seal deterioration, which is not provided by lubricants in current use meeting only the requirements of API GL-1, 4, or 5. These service conditions require a lubricant having load-carrying capacities exceeding those satisfying API GL-1 service but below the requirements of lubricants satisfying API GL-4 service.

The article "Gear Oil Classification and Selection" appeared in the May/June 1995 issue of Gear Technology. download the PDF file. This service designation is obsolete.

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