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Dual Cut Hob

Comparison of wear between Wet and Dry hobbing

m2.5 , PA16°, NT46, no coating on cutting face
V=100 (m/min)
f = 2.8 (mm/rev)		 V=150 (m/min)
f = 2.8 (mm/rev)
WET (Tooth No. -14)
Cutting length 84m		 DRY(Tooth No. -14)
Cutting length 279m

Example Sample 1 Sample 2 Sample 3
Work Dimension Module
Pressure Angle
No.of Teeth
Helix Angle
Material
2.45
17.5
41
25 LH
SCr420H 		1.56
14.5
73
30 LH
SCM415		 2.6
20
67
32.5 LH
SCr420H
Cutting Condition Cutting Method
Speed (m/min)
Feed (mm/rev)
Climb Hobbing
105
2.0 		Climb Hobbing
120
2.3 		Climb Hobbing
115
2.5
Hob Dimension Outside Dia.
No.of Threads
No.of Gashes
Coating on cutting face

75
3
12
NON

75
4
14
NON 		100
5
16
NON
Comparison of Performance
Crater Wear (mm)

Cost reduction in production !
Dry hobbing is now by newly developed HSS material and coating film !

Excellent performance in Dry Cutting comparing to other brand

Work dimensions Module : 2.5
No. of Teeth : 65
H.A : 31 RH
Width : 30mm
Material : SCr420
Hob dimensions O.D. : 90mm
O.A.L. : 200mm
No of Threads : 4
No. of Gashes : 16
Cutting condition Feed : 2.5mm/min
Climb Hobbing

Tool life in Dry Cutting is longer than that in Wet Cutting.

Work dimensions Module : 2.8
No. of Teeth : 48
H.A : 31 RH
Material : SCr420
Hardness : 160-180HB
Hob dimensions O.D. : 105mm
O.A.L. : 150mm
No of Threads : 3
No. of Gashes : 14
Cutting condition Feed : 2.5mm/min
Climb Hobbing
Cutting Length : 210m
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