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Precision class Material Core hardness Teeth hardness Teeth finishing Faces Parallelism Perpendicularity
ISO 8 C45 <650 N/mm² <20 HRC Cutted Grinded (Ra=0,8) 0,06 mm/m -
Available modul
1 - 1,5 - 2 - 3
Modul 1 1,5 2 3
Invididual pitch error (mm) ±0,016 ±0,016 ±0,016 ±0,016
Cumulative pitch error (mm/m) < 0,063 < 0,063 < 0,063 < 0,071

First Straight

Modul Teeth number L B H Ho I E E' F F' R S T M G O C K J An Ref
1 159 499.51 15 14 13 - - - - - - - - - - - - - - - FIR-D-1-500
1 318 999 15 14 13 - - - - - - - - - - - - - - - FIR-D-1-1000
1 159 499.51 20 20 19 - - - 124.87 249.73 - - - 2 7.5 7 7 11 - - FIR-DL-1-500
1 318 999 20 20 19 - - - 166.5 333 - - - 3 7.5 7 7 11 - - FIR-DL-1-1000
1.5 106 499.47 15 14 12.5 - - - - - - - - - - - - - - - FIR-D-1.5-500
1.5 212 999 15 14 12.5 - - - - - - - - - - - - - - - FIR-D-1.5-1000
1.5 106 499.47 20 20 18.5 - - - 124.87 249.73 - - - 2 7.5 7 7 11 - - FIR-DL-1.5-500
1.5 212 999 20 20 18.5 - - - 166.5 333 - - - 3 7.5 7 7 11 - - FIR-DL-1.5-1000
2 79 496.36 20 20 18 - - - 124.09 248.18 - - - 2 7.5 7 7 11 - - FIR-D-2-500
2 159 999 20 20 18 - - - 166.5 333 - - - 3 7.5 7 7 11 - - FIR-D-2-1000
2 80 508.64 25 24 22 - - - 62.8 125.66 - - - 4 8 7 7 11 - - FIR-DL-2-500
2 160 1005.28 25 24 22 - - - 62.8 125.66 - - - 8 8 7 7 11 - - FIR-DL62-1000
3 54 508.9 30 29 26 - - - 63.62 127.23 - - - 4 9 9 10 15 - - FIR-D-3-500
3 108 1017.9 30 29 26 - - - 63.62 127.23 - - - 8 9 9 10 15 - - FIR-D-3-1000
Transmittable force and torque, axial and radial forces generated byt he helical gearing, vs number of teeth of the pinion.

First Straight pinion

Modul 1 Modul 1 Modul 2 Modul 2 Modul 2
Teeth number B=15 B=20 B=20 B=25 B=30
21 Transmitable force (Ft) (N) 90 120 280 515 1490
Torque(T) (Nm) 0.9 1.3 4.4 11 47
Axial force (Fa) (N) - - - - -
Radial force (Fr) (N) 35 44 100 190 540
25 Transmitable force (Ft) (N) 140 180 425 770 2180
Torque (T) (Nm) 1.8 2.3 8 19 80
Axial force (Fa) (N) - - - - -
Radial force (Fr) (N) 51 66 155 280 790
30 Transmitable force (Ft) (N) 210 270 600 1130 3080
Torque (T) (Nm) 3.2 4.1 14 34 140
Axial force (Fa) (N) - - - - -
Radial force (Fr) (N) 76 100 220 410 1120