AGMA 6019 : E

1 Scope
1.1 Limitations
1.2 Exceptions
1.3 References
2 Symbols and terms
3 Application and design considerations
3.1 Momentary peak load
3.2 Rating factors
3.3 Metallurgy
3.4 System analysis
4 Unit rating
4.1 External loading
4.2 Efficiency
5 Rating criteria
5.1 Gear tooth capacity (general)
5.2 Surface hardened gearing
5.3 Determining pitting resistance rating
5.4 Determining bending strength rating
6 Thermal power rating
6.1 Intermittent service
6.2 Adverse conditions
6.3 Favorable conditions
6.4 Auxiliary cooling
7 Components
7.1 Housing
7.2 Shafting
7.3 Keys
7.4 Roller and ball bearings
7.5 Threaded fasteners
7.6 Miscellaneous components
7.7 Electric motors
8 Application classification and overhung load
8.1 Selection of application classification numbers
8.2 Listing of application classification and class
      numbers
8.3 Determining application classification number
8.4 Overhung load calculation
9 Lubrication and lubricants
9.1 Lubrication
9.2 Lubricant viscosity
9.3 Lubricant recommendation
9.4 Cold temperature conditions
9.5 Lubricant types
9.6 Lubricant maintenance
10 Sound
11 Relative shaft rotations
12 Ratios and output speeds
13 Marking and identification
14 Storage
14.1 Normal storage
14.2 Adverse conditions or long term storage
15 Installation
15.1 Foundation
15.2 Mounting
15.3 Shaft connections
Bibliography
Appendices
A Application classification and class number
B Geometry factor I, for pitting resistance, for
      spur, helical, and herringbone gears
C Geometry factor I, for pitting resistance, for
      straight bevel and spiral bevel gears
D Geometry factor J, for bending strength, for spur,
      helical and herringbone gears
E Geometry factor J, for bending strength, for
      straight bevel and spiral bevel gears
F Miner's rule
G Illustrative examples
Tables
2.1 Symbols
5.1 Approximate values of geometry factor, I, for 20
      degrees normal pressure angle helical gears
5.2 Approximate values of geometry factor, I, for 25
      degrees normal pressure angle helical gears
5.3 Approximate values of geometry factor, I, for spur
      gears
5.4 Allowable contact stress number, sac
5.5 Elastic coefficient, Cp
5.6 Load distribution factors for spiral bevel gears
      with crowned teeth, Cm, Km
5.7 Allowable bending stress number, sat
5.8 Yield strength factor, Ky
7.1 Allowable shaft stress multipliers
7.2 Typical allowable stresses for keys and keyways
7.3 Allowable tensile stress for typical inch threaded
      fasteners
7.4 Allowable tensile stress for typical metric
      threaded fasteners
8.1 Service factor, KSF
8.2 Overhung load factor, Koh
9.1 Viscosity ranges for AGMA lubricants
9.2 R&O and EP lubrication recommendations
9.3 Synthetic hydrocarbon lubrication recommendations
12.1 Ratios for standard gearmotor output speeds
12.2 Gear ratio allowable variation

Presents a method of rating the pitting resistance and bending strength of spur, helical, herringbone and bevel gears used for gearmotors. Also included is information on unit rating, lubrication, components, thermal ratings, storage and installation.