AGMA 6004-F88-1988

Gear Power Rating for Cylindrical Grinding Mills, Kilns, Coolers and Dryers

AGMA 6004-F88-1988 发布历史

1.1 Applicability. This Standard provides a method to determine the power rating of gear sets for cylindrical grinding mills, kilns, coolers, and dryers. The formulas are applicable to steel gears with machined spur, single helical, double helical, or herringbone gear teeth commonly used for this purpose. Calculations determine the allowable rating for pitting resistance and bending strength of external spur and helical involute gear teeth. 1.2 Limitations. (1) Rating procedures are limited to open or semi-enclosed gearing where the gear reaction forces are transmitted through a structure which provides independent bearing support for the gear and pinion. Open gears operate without any enclosure. Semi-enclosed gears operate with a guard that provides some degree of protection against contamination from dust or dirt and retains lubricant. (2) Enclosed gear drives or speed reducers are expressly excluded from this Standard. (3) This gear rating practice is limited to maximum operating speeds of 2000 feet per minute (10.2 m/s) gear pitch line velocity or 450 revolutions per minute of the pinion. (4) When dual motors and pinions are used, each pinion will be designed for 60 percent of the total input power of both motors unless otherwise specified by contractual agreement. (5) This Standard does not include gearing which has been surface hardened by nitriding or flame hardening. This gear rating practice is limited to through hardened gears operating with through hardened, carburized, or induction hardened pinions. (6) Face contact ratio of helical gear sets must be greater than 1. O. 1.3 Metallurgy. The allowable stress numbers, sac and %t , included herein are based on commercial steel making and heat treating practice. Hardness and tensile strength are the criteria for allowable stress numbers. Variation in microstructure will result in variation in gear capacity.

AGMA 6004-F88-1988由美国齿轮制造商协会 US-AGMA 发布于 1988-05。

AGMA 6004-F88-1988的历代版本如下：

• 1988年05月 AGMA 6004-F88-1988

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标准号

AGMA 6004-F88-1988

发布日期

1988年05月

实施日期

废止日期

无

发布单位

US-AGMA

适用范围

1.1 Applicability. This Standard provides a method to determine the power rating of gear sets for cylindrical grinding mills, kilns, coolers, and dryers. The formulas are applicable to steel gears with machined spur, single helical, double helical, or herringbone gear teeth commonly used for this purpose. Calculations determine the allowable rating for pitting resistance and bending strength of external spur and helical involute gear teeth. 1.2 Limitations. (1) Rating procedures are limited to open or semi-enclosed gearing where the gear reaction forces are transmitted through a structure which provides independent bearing support for the gear and pinion. Open gears operate without any enclosure. Semi-enclosed gears operate with a guard that provides some degree of protection against contamination from dust or dirt and retains lubricant. (2) Enclosed gear drives or speed reducers are expressly excluded from this Standard. (3) This gear rating practice is limited to maximum operating speeds of 2000 feet per minute (10.2 m/s) gear pitch line velocity or 450 revolutions per minute of the pinion. (4) When dual motors and pinions are used, each pinion will be designed for 60 percent of the total input power of both motors unless otherwise specified by contractual agreement. (5) This Standard does not include gearing which has been surface hardened by nitriding or flame hardening. This gear rating practice is limited to through hardened gears operating with through hardened, carburized, or induction hardened pinions. (6) Face contact ratio of helical gear sets must be greater than 1. O. 1.3 Metallurgy. The allowable stress numbers, sac and %t , included herein are based on commercial steel making and heat treating practice. Hardness and tensile strength are the criteria for allowable stress numbers. Variation in microstructure will result in variation in gear capacity.