Hyper DuAl SP/GP HobHyper DuAl SP Hob● Designed for machining with ultra high efficiency

and for hard-to-cut materials● The tougher the conditions, the better the performance

(Cutting speed 180 to 300m/min)

Hyper DuAl GP Hob● Suitable for both dry and wet hobbing● Supports a wide range of machining environments and

methods● Exhibits the best performance in conventional cutting range

(Cutting speed 80 to 180m/min)

● Specifications for re-grinding/re-coating

Hyper DuAl SP HobProduct Description

Hyper DuAl SP HobV 300m/min hobbing

Select coating according to application

Wet hobbingDry hobbing

Standard efficiency High efficiency Hyper efficiency

For re-grinding/re-coating

Hyper DuAl SP

Hyper DuAl GP

For re-grinding DuAl EX

Hyper DuAl SP(For re-coating)

Feed（

mm

/rev）➡

50 100 200 300

Hyper efficiency

High efficiencyStandard

efficiencyHyper DuAl GP(For re-coating)DuAl EX

(For re-grinding)

Speed (m/min)

Comparison of wear in dry hobbing at 300m/min speed

Test conditions•Workpiece specifications: m2.5 × PA16°× NT54, SCM420• Hob specifications: O.D. 95mm × NT12 × 3TH, material FMH• Cutting conditions: V = 300m/min, f = 3.0 mm/rev, climb cutting, dry hobbing, no shift

DuAl EX Conventional Hyper DuAl hob Hyper DuAl SP

Wear condition

Cutting length 25m 43m 130m

Tool life ratio 1 1.7 5.2

Hyper DuAl SP

Comparison of wear in material with hardness 250HB

•Workpiece specifications: m2 × PA15°× NT79, S45C (250HB)• Hob specifications: O.D. 70 mm × NT12 × 3TH• Cutting conditions: V = 110 / 160 m/min, f = 3.0 / 2.6 mm/rev, climb cutting, dry hobbing, No of machined parts: 800pcs

Competitor product (coated for dry hobbing) Hyper DuAl SP

Wear condition

Max. wear 0.36mm 0.06mm

Hyper DuAl SP

Test conditions

Comparison of wear after cutting length 350mHyper DuAl GP

Test conditions•Workpiece specifications: m2.9 × PA15°× NT47, SCM420H • Hob specifications: O.D. 105 mm × NT12 × 3TH, material FMH • Cutting conditions: V = 160m/min , f = 2.4mm/rev, climb cutting, dry hobbing, no shift

Conventional Hyper DuAl hob Hyper DuAl GP 　

-19 tooth

-13 tooth

0

0.05

0.1

0.15

0.2

0.25

0 100 200 300 400 500Cutting length (m)

Conventional Hyper DuAl hob

1.5 times longer tool life

Hyper Dual GP

Wea

r (m

m)