EXTERNAL SPUR GEAR | ||||
Drawing or article number | LK-S-44619001 | |||
Number of teeth | z | 46 | ||
Tooth width (mm) | b | 50 | ||
Normal module (mn) | mn | 4.000 | ||
Helix angle (°) | beta | 0°0’0’’ (0.0000) | ||
Hand of gear | Spur gear | |||
Pressure angle at normal section (°) | alfn | 20°0’0’’ (20.0000) | ||
Material | 1.6587 / 18CrNiMo7-6 | |||
Reference profile 1.25 / 3.0 / 1.0 DIN 867:1986 | ||||
Addendum coefficient | haP * | 1.000 | ||
Dedendum coefficient | hfP * | 1.250 | ||
Accuracy grade according DIN3961 | 6 | |||
Tooth profile total deviation (μm) | Fa | 11 | ||
Total deviation of helix (μm) | Fβ | 12 | ||
Individual circular pitch error (μm) | fpt | 7 | ||
Total cumulative pitch error (μm) | Fp | 25 | ||
Profile shape deviation (μm) | ffa | 8 | ||
Radial runout (μm) | fr | 20 | ||
Profile shift coefficient | x | 0.1000 | ||
Reference diameter (mm) | d | 184.000 | ||
Tip diameter (mm) | da | 192.668 (0.000 / -0.010) | ||
Root diameter(mm) | df | 174.800(-0.220 / -0.440) | ||
Number of teeth spanned | k | 6 | ||
Base tangent length (mm) | Wk | 67.798 |
Material heat treatment | ||
Surface hardness | 60 HRC | |
CHD | 1.1 mm | |
Core hardness | 40 HRC | |
Microstructure | ||
C | 1 | |
M | 1 | |
A | 1 | |
F | 1 | |
Machanics performance test | ||
Tensile strength | Rm(N/mm²) | 1252 |
Yield strength | Rp0.2(N/mm²) | 1105 |
Broken of elongation | A(%) | 13.5 |
Reduction of area | Z(%) | 64 |