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CYLINDRICAL GEAR DESIGN
Spur & Helical Gear Design Calculation
Per GB/T 3480 - 7-module comprehensive verification (geometry, contact fatigue, bending fatigue, backlash)
Input Parameters
Power & Geometry
Power P (kW)
Pinion Speed n1 (rpm)
Gear Ratio u (z2/z1)
Pinion Tooth Count z1
Module m (mm)
Face Width b (mm)
Pinion Profile Shift x1
Gear Profile Shift x2
Mesh Type
External mesh
Internal mesh
Gear Type
Spur gear
Helical gear
Herringbone gear
Helix Angle β (deg)
Material & Quality
Pinion Material
45 - normalized to:
45 - quenched & tempered to:
45 - surface-hardened to:
35SiMn - quenched & tempered to:
35SiMn - surface-hardened to:
42SiMn - quenched & tempered to:
42SiMn - surface-hardened to:
50SiMn - quenched & tempered to:
50SiMn - surface-hardened to:
40MnB - quenched & tempered to:
40MnB - surface-hardened to:
38SiMnMoV - quenched & tempered to:
38SiMnMoV - surface-hardened to:
37SiMn2MoV - quenched & tempered to:
37SiMn2MoV - surface-hardened to:
40Cr - quenched & tempered to:
40Cr - surface-hardened to:
38CrMn - quenched & tempered to:
38CrMn - surface-hardened to:
20Cr - carburized, quenched & tempered to:
20Cr - nitrided to:
20CrMnTi - carburized, quenched & tempered to:
20CrMnTi - nitrided to:
38CrMoAlA - nitrided to:
20MnVB - carburized, quenched & tempered to:
ZG 310-570 - normalized to:
ZG 340-540 - normalized to:
ZG 40Mn2 - normalized & tempered to:
ZG 40Mn2 - quenched & tempered to:
ZG 35SiMn - normalized & tempered to:
ZG 35SiMn - quenched & tempered to:
ZG 42SiMn - normalized & tempered to:
ZG 42SiMn - quenched & tempered to:
ZG 50SiMn - normalized & tempered to:
ZG 40Cr - normalized & tempered to:
ZG 40Cr - quenched & tempered to:
ZG 35CrMo - normalized & tempered to:
ZG 35CrMo - quenched & tempered to:
ZG 35CrMnSi - normalized & tempered to:
ZG 35CrMnSi - quenched & tempered to:
HT250 (gray cast iron)
HT300 (gray cast iron)
HT350 (gray cast iron)
QT500-7 (ductile iron)
QT600-3 (ductile iron)
QT700-2 (ductile iron)
QT800-2 (ductile iron)
QT900-2 (ductile iron)
Gear Material
45 - normalized to:
45 - quenched & tempered to:
45 - surface-hardened to:
35SiMn - quenched & tempered to:
35SiMn - surface-hardened to:
42SiMn - quenched & tempered to:
42SiMn - surface-hardened to:
50SiMn - quenched & tempered to:
50SiMn - surface-hardened to:
40MnB - quenched & tempered to:
40MnB - surface-hardened to:
38SiMnMoV - quenched & tempered to:
38SiMnMoV - surface-hardened to:
37SiMn2MoV - quenched & tempered to:
37SiMn2MoV - surface-hardened to:
40Cr - quenched & tempered to:
40Cr - surface-hardened to:
38CrMn - quenched & tempered to:
38CrMn - surface-hardened to:
20Cr - carburized, quenched & tempered to:
20Cr - nitrided to:
20CrMnTi - carburized, quenched & tempered to:
20CrMnTi - nitrided to:
38CrMoAlA - nitrided to:
20MnVB - carburized, quenched & tempered to:
ZG 310-570 - normalized to:
ZG 340-540 - normalized to:
ZG 40Mn2 - normalized & tempered to:
ZG 40Mn2 - quenched & tempered to:
ZG 35SiMn - normalized & tempered to:
ZG 35SiMn - quenched & tempered to:
ZG 42SiMn - normalized & tempered to:
ZG 42SiMn - quenched & tempered to:
ZG 50SiMn - normalized & tempered to:
ZG 40Cr - normalized & tempered to:
ZG 40Cr - quenched & tempered to:
ZG 35CrMo - normalized & tempered to:
ZG 35CrMo - quenched & tempered to:
ZG 35CrMnSi - normalized & tempered to:
ZG 35CrMnSi - quenched & tempered to:
HT250 (gray cast iron)
HT300 (gray cast iron)
HT350 (gray cast iron)
QT500-7 (ductile iron)
QT600-3 (ductile iron)
QT700-2 (ductile iron)
QT800-2 (ductile iron)
QT900-2 (ductile iron)
Quality Grade
ML (Low)
MQ (Medium)
ME (High)
Precision Grade (5-10)
Application & Reliability
Reliability
Failure prob < 1/10000
Failure prob < 1/1000
Failure prob < 1/100
Support Type
Symmetric
Asymmetric (stiff)
Asymmetric (flexible)
Cantilever (overhung)
Prime Mover
Uniform steady
Slight shock
Moderate shock
Heavy shock
Driven Machine
Uniform steady
Slight shock
Moderate shock
Heavy shock
Calculate All 7 Modules
Results
Calculating