HAMAI exhibited the new N70 Horizontal Gear Hobbing Machine at Motion + Power Technology Expo
2023 which was held in Detroit, USA from October 17th to 19th at the booth of our distributor MTB Inc.
Demonstration of the machining of 2,5 module gear which is the maximum cutting capacity of the N70machine was performed at the exhibition, and the rigidity and performance of the Hamai machines werehighly evaluated. We are now scheduling to start selling the machine in Japan and other overseas
markets in the future. Please refer to the attached for flyer and exhibition information.

Hamai New N70 CNC Horizontal Hobbing Machine

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eady to take your horizontal hobbing to the Nth degree?

Introducing the HAMAI N70. Under the design concept of "COMPACT BUT POWER
FULL", this machine was developed. It’s a quantum leap forward, for exceptionally fast
production of high precision aerospace, automotive and shaft gears up to 120 mm in diameter,and cutting capacity to M2.5. Exceptionally easy to operate using the interactive input withgraphic display, and available fully automated to reduce load/unload time by adapting the slant
type hob head.

Gear Cutting
machinemachinetoolbuilders.com(815) 636-7502

See us at:
BOOTH #3206

Hamai New N70 CNC Hobbing Machine
MACHINE RIGIDITY:
Using the latest structural analysis software, the machine body with cast iron is designed the shape to eliminate
the machine vibration and load, achieving the significant increase in rigidity. The bed shape is not only rigid but
also designed to emphasize machining during dry cutting and to prevent chips from accumulating, thereby
improving maintainability. Hob and work spindles are directly connected by the built-in motors, and the motor
torque has been greatly increased to enable high-speed hob spindle, continuous high feed rate machining of gears
with the maximum M2.5.

OPERATION:
The latest FANUC FS31i-B Plus with 15-inch color
touch panel allows almost all operations to beperformed on the screen. The "interactive data input
screen" for setting data required for machining has
been completely redesigned, with extensive use oficon images in addition to graphic screens andexplanatory text displays, making it easy for anyone tounderstand. The tailstock movement is the torquecontrolled by servo motors. Thrust force values for thecenter can be easily set by entering it from theoperation screen. This increases the usable thrustforce range and allows setting the optimum thrust force
value for the workpiece.

AUTOMATION:
To improve the efficiency of automation, the slant type hob spindle head is adopted at the shortest possible
distance when using with the gantry loader specification. Even in the case of the articulated robot specification,
the slant angle of the hob spindle expands the movable range of the robot arm, reducing unnecessary movements
and facilitating teaching work.

MAIN SPECIFICATION:
Max. diameter:

120 mmMax. cutting length 200 mm

Max. module

Max. Hob spindle

6000 rpm

Max. wrok spindle

Hob shift length

100 mmAxial movement

200 mmTailstock movement 250 mm

Rapid feed

8000 mm/min

Floor space2000 x 2100mm

Machine heighMachine weight5500 kgs

1000 rpm
1910 mm

2.5M

HAMAI CO., LTD. https://www.hamai.com
5-5-15, Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan,

Phone: 81334910131