KITAI
KITAI develops and manufactures small hobbing machines and gear processing related equipment.
Machine Lineup
KITAI's Brand-New Machines
KITAI CNC Gear Hobbing Machine HOBLON 8NC
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KITAI
HOBLON 8NC
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KITAI CNC Gear Hobbing Machine Hi-PRO 3N
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KITAI
Hi-PRO 3N
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KITAI CNC Gear Hobbing Machine Hi-PRO 3AII
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KITAI
Hi-PRO 3AII
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KITAI CNC Gear Hobbing Machine Hi-PRO 10N
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KITAI
Hi-PRO 10N
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KITAI CNC Gear Hobbing Machine Hi-PRO 10NW
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KITAI
Hi-PRO 10NW
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KITAI CNC Gear Hobbing Machine Hi-PRO 10AII
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KITAI
Hi-PRO 10AII
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KITAI CNC Gear Hobbing Machine Hi-PRO 10AIIW
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KITAI
Hi-PRO 10AIIW
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KITAI CNC Gear Shaping Machine KS-6N
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KITAI
KS-6N
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Specification Comparison Table
8-NC Get Export Price | 3AII Get Export Price | 10NW Get Export Price | 10AII Get Export Price | 10AIIW Get Export Price | KS-6N Get Export Price | ||||
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Max. Module | mn (DP) | 2.0 (12) | 0.75 (34) | 0.75 (34) | 2.5 (10) | 2.5 (10) | 2.5 (10) | 2.5 (10) | 1.0 (25) |
Max. Diameter of gear | mm (inch) | 160 (6.299) | 30 (1.181) | 30 (1.181) | 100 (3.937) | 100 (3.937) | 100 (3.937) | 100 (3.937) | 60 (2.362) |
Number of teeth | Z | 3-999 | 3-999 | 6-100 | 3-999 | 3-999 | 5-100 | 3-999 | - |
Swivel angle of hob head | ° | +160 ~ -20 | ±45 | - | ±45 | +117 ~ -45 | ±45 | +108° ~ -45° | - |
Max. hob spindle speeds | rpm | 3,000 | 6,000 | 4,000 | 4,000 | 4,000 | 1,500 | 1,500 | - |
Floor space | mm (inch) | 1,215x1,460 (47.83x57.48) | 1,379x1,376 (54.29x54.17) | 1,070x930 (42.13x36.61) | 1,680x1,750 (66.14x68.90) | 1,680x1,750 (66.14x68.90) | 1,545x1,275 (60.83x50.20) | 1,755x1,350 (69.09x53.15) | 1,000x1,370 (39.37x53.94) |
Net Weight | kg (lb) | 1,400 (3,086) | 1,400 (3,086) | 900 (1,984) | 3,600 (7,936) | 3,600 (7,936) | 2,100 (4,630) | 2,100 (4,640) | 2,000n(4,409) |
Cuttable Gears
8-NC Get Export Price | 3AII Get Export Price | 10NW Get Export Price | 10AII Get Export Price | 10AIIW Get Export Price | KS-6N Get Export Price | |||
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Spur Gear | ||||||||
Helical Gear | ||||||||
Worm Wheel | ||||||||
Worm | ||||||||
Internal Gear | ||||||||
Stepped Gear |
KITAI's Used Machines
Technology
High Rigidity for Superior Precision and Long Service Life
KITAI hobbing machines are renowned for their high precision and rigidity. This is achieved through a combination of innovative technologies, including "Kisage" (hand scraping) for achieving high-precision metal contact on sliding surfaces, and a dual-axis drive method for enhanced rigidity.
Point 1
Traditional NC Synchronization vs. KITAI Dual-Axis Drive
Conventional NC systems rely on separate motors for the hob spindle, main spindle (work spindle), and tailstock spindle. While NC control attempts to synchronize them, variations in workpiece material (hard vs. soft areas) can cause load fluctuations, leading to potential synchronization issues. To compensate, NC machines often use oversized motors (4-5 times the needed power) to handle these fluctuations, adding cost and complexity.
KITAI's innovative dual-axis drive method takes a different approach. A single powerful motor drives both the main and tailstock spindles through a precisely engineered gear train. This design ensures perfect synchronization, even under varying loads. By distributing the load evenly across both axes, the risk of synchronization loss is eliminated. This translates to several benefits:
- Prevents center hole damage Consistent synchronization protects the workpiece's center hole from potential damage.
- Ensures stable chucking Precise synchronization guarantees stable workpiece clamping, crucial for high machining accuracy.
- Maintains high precision The even load distribution minimizes vibrations, allowing for precise hobbing operations.
This unique dual-axis drive system exemplifies KITAI's commitment to achieving superior machining accuracy and performance.
Point 2
Kisage: The Art of Hand Scraping Sliding Surfaces
Kisage, or hand scraping, is a traditional Japanese technique used to create a precise and uniform finish on the sliding surfaces of machine tools. This meticulous process involves the careful removal of material using specialized tools, resulting in a number of significant benefits:
- Extremely High Mechanical Rigidity The high rigidity makes the machine more durable and extends its lifespan. Additionally, this allows for better performance in high-speed feed cutting, skiving, dry cutting, and machining of hard materials compared to point-contact linear guide methods.
- Efficient Lubrication of Sliding Surfaces Scraped finishes by skilled craftsmen with years of experience improve the efficiency of lubricant supply to the sliding surfaces.
- High Precision Cutting The increased contact area due to scraping allows for the absorption of fine vibrations at the hob's cutting edge during cutting, enabling high precision cutting.
Sample of Gears Cut by Hobbing Machines
Company
Company Overview
Name
KITAI SANGYO CO., LTD.
Founded
March, 1936
CEO
Masayuki Kitai
Capital
¥35,000,000
Business Description
Manufacture and sales of small gear hobbing machines and related gear products.
Location
860-1, Hoshikawabata, Shimoosaki, Shiraoka-city, Saitama, 349-0203, Japan
Official Website
https://kitaisangyo.jp/
History
Mar, 1936
Kitai Gear Factory was founded.
Jun, 1953
Developed HOBLON 1-A.
Mar, 1956
Renamed to Kitai Sangyo Co., Ltd.
Oct, 1962
Exhibited at the first Japan International Machine Tool Fair (JIMTOF).
Mar, 1965
Exhibited at JETRO Machine Tool Fair held in Hong Kong.
Aug, 1968
Developed HOBLON 8-F.
Feb, 1972
Developed HOBLON 8-FH.
May, 1978
Developed Hi-PRO 3A.
Jan, 1980
Exhibited at Machine Asia held in Singapore.
Mar, 1981
Exhibited at WESTEC held in LA, USA
Mar, 1983
Developed Hi-PRO 10A
Dec, 1991
Developed Hi-PRO 5A
Aug. 1996
Developed HOBLON 8-FN
Sep, 1996
Developed Hi-PRO 3U
Apr, 1997
Developed Hi-PRO 10AII
May, 1998
Relocated the factory to Shiraoka, Saitama
Jun, 1999
Developed KGT, a double-flank gear rolling tester.
Oct, 2000
Developed SKA, an automatic hob sharpening machine.
Oct, 2003
Developed Hi-PRO 10AIII.
Apr, 2003
Developed KN-1, a gear cutting machine.
Aug, 2004
Developed SK-A200, an ultrasonic wave grainding machine.
Nov, 2004
Developed Hi-PRO 2A.
Nov, 2006
Developed KS-6N, a gear shaping machine.
Jan, 2007
Developed SKA-H, an automatic hob sharpener.
Aug, 2008
Developed Hi-PRO 10N.
Oct, 2012
Developed HOBLON 8-NC.
Aug, 2014
Developed Hi-PRO 3N