Buy AGMA F STANDARD FOR SPUR, HELICAL, HERRINGBONE AND BEVEL ENCLOSED DRIVES from SAI Global. AGMA (R) Spur, Helical, Herringbone, and Bevel Enclosed Drives Applicable to enclosed gear drives wherein the gear tooth designs include . Buy AGMA Practice For Enclosed Speed Reducers Or Increasers Using Spur , Helical, Herringbone And Spiral Bevel Gears from SAI Global.

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The new numbering system would include the standard number, a hyphen, the revision letter, and the year of the release. Less efficient due to thrust bearing load.

Also included is information on unit rating, lubrication, components, thermal ratings, storage and installation. This hardness combination is not addressed in API The response usually is that being substantially below the allowable only increases the service factor, which is already very high, therefore, it is not necessary.

The decrease in efficiency of 1. Some of the major differences of each gear type are shown in Table A These high ratio gear sets are typically used in integral compressor drives and often use a carburized pinion with a through-hardened gear. However, there are some general statements that can be agmaa for the typical gear unit user: This Standard is applicable to enclosed speed qgma and increasers wherein the gear tooth designs include spur, helical, herringbone or double helical, bevel, and their combination in multi – stage units.


The durability rating 600 about the same for through-hardened gear sets, but ISO has higher durability ratings for carburized gear sets. Please first log in with a verified email before subscribing to alerts. Although AGMA material-allowable stresses have increased over the years to reflect increasingly stricter metallurgical requirements, improved metallurgy and extensive field experience, the API ratings have remained unchanged.

Gearbox specs: Getting it right

For some applications, 610 gear set ratings are close, but usually there are significant differences in the ratings when comparing different standards. You may delete a document from your Alert Profile at any time.

Less expensive to fabricate gear elements.

Auxiliaries New compressor software release targets cybersecurity. The gear sets used in this comparison are presented 6001 Table 1, with changes between sets highlighted. Do not have apex runout.

API 4th edition They have evolved from standards originally published in The gear set supplied is through-hardened with a 22 inch center distance.

It is recognized as having a good thermal rating method. Requires thrust 60010 and thrust faces on each rotor. It does not apply to bevel or internal gearing. He previously served as a Design Engineer in high-speed gearing, and in he was promoted to Chief Engineer responsible for the engineering on all gears including low-speed through high-speed, marine, and repair.

Since sgma graduation he has been in gear engineering with Lufkin Industries. This standard is not included in any packages. Documents Flashcards Grammar checker.


Number of teeth Pinion 38; Gear Page 1, line Can be repaired quickly by recutting gear and increasing pinion size. The difference in strength ratings is probably because of the different methods in calculating the J factor. In later years, the strength rating was added. Since its initial publication inmost of the main gearboxes in refineries have had to conform to this specification.

The proposed rating method is more complicated than API because of the increased detail. Standard for Industrial Enclosed Gear Drives. Bending Stress The bending stress value for both gear and pinion is a measure of gear tooth qgma and is calculated per Equation 4 of APIparagraph 2. It is fairly conservative, but not nearly as much as API Add to Alert PDF.

Substituting into Equation 4: Be aware that the API service factors will probably be less than unity, but the comparison should indicate the most robust gear agmma.

Comparisons with API have resulted in virtually the same durability ratings, but different strength ratings. The overlap exists when both the rpm are between and and the gear tooth pitch line velocity is between fpm 33 mps and fpm 35 mps.