High Quality Large Diameter Herringbone Gear

Description

Double helical gears have a cylindrical shape. They comprise two segments of teeth, left hand and right hand and function through their simultaneous engagement with exactly identically arranged teeth of the mating gear. As two gears are utilized thrust loading is done away with and the thrust load gets totally balanced.

Specification
Precision Grade
ISO 1328 grade 7
Helix Angle(β)
15°
Pressure Angle(α)
20°
Material
SAE 8620 or 20CrMnTi
Heat Treatment
Carburizing
Hardness
58±2 HRC, 0.8~0.95 mm deep

 

Catalog No.
Module
No. of Teeth
Helix Direction
Bore
(A)
Pitch Diameter(C)
Outside dia.(D)
Face width
(E)
Total Length(G)
Mating gear
I0001434
2.25
85
left
76
191.25
202.5
42
42
I0001402
I0005887
2.5
68
left
45
170
181
30
30
I0001418
I0005888
2.5
76
left
55
190
201.8
36
36
I0005223
I0005222
3
74
right
88
222
235.7
45
45
I0005220
I0003897
3.5
76
left
63
266
282.1
55
55
I0005219
I0003896
3.5
76
left
63
266
282.1
50
50
I0005219
I0005224
3.5
74
right
112
259
275.2
50
50
I0006057
I0003898
4.5
74
right
145
333
354.3
60
60
I0005218
I0003899
4.5
74
right
145
333
354.3
85
85
I0001412