Precision rack / FIRST range straight teeth

Economy range for precise translation of light loads, normal duty


Precision class Material Code Hardness Surface hardness Teeth Sides ∥ ⊥
ISO 8 C45 <650 N/mm² <20 HRC cut Rough 0,06 mm/m -
Standard modules available
1 - 1.5 - 2 - 3
Module 1 1,5 2 3
Individial pitch error (mm) ± 0.016 ± 0.016 ± 0.016 ± 0.016
Cumulative pitch error (1,000 mm) < 0.063 < 0.063 < 0.063 < 0.071
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Module
Number of teeth
L
B
H
Ho
I
E
E'
F
F'
R
S
T
M
G
O
C
K
J
An
Reference
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.
Number of
theeth
of the
pinion
  

Module

1 B=15

Module

1 B=20

Module

2 B=20

Module

2 B=25

Module

3 B=30
21
 Transmittable force(Ft) (N) 90 120 280 515 1490
Rated torque / 20,000 h (T) (Nm) 0.9 1.3 4.4 11 47
Axial force(Fa) (N)
-
-
-
-
-
Radial force (Fr) (N) 35 44 100 190 540
25
 Transmittable force(Ft) (N) 140 180 425 770 2180
Rated torque (T) (Nm) 1.8 2.3 8 19 80
Axial force(Fa) (N)
-
-
-
-
-
Radial force (Fr) (N) 51 66 155 280 790
30
 Transmittable force(Ft) (N) 210 270 600 1130 3080
Rated torque (T) (Nm) 3.2 4.1 14 34 140
Axial force(Fa) (N)
-
-
-
-
-
Radial force (Fr) (N) 76 100 220 410 1120

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