Company Info

KITAI SANGYO CO.,LTD is "the only maker in the world specializing in small gear hobbing machines, " single-mindedly engaged in gear cutting for more than 60 years since foundation under the managerial
philosophy of "faithfulness."
We have been making assiduous efforts for research, tackling technical innovation every day in pursuit of challenging spirits and product originality.
We will continue to develop and offer hobbing machines designed to your satisfaction based on flexible ideas.
Your continued guidance and encouragement will be highly appreciated.


　　　　Corporate Name : KITAI SANGYO CO., LTD.

　　　　President : Masayuki Kitai

　　　　The foundation : March,  １936

　　　　Capital : \￥35,000,000

　　　　Line of business : Manufacture and sales of small gear hobbing machines and gear-related

　　　　Address : 860-1, Hoshikawabata, Simoosaki, Siraoka-Machi Minamisaitama-Gun, Saitama,349-0203,Japan

　　　　Phone :+86-480-93-7401 Ｆax : 86-480-93-7405

　　　　Example of gear cutting by our hobbing machine:




　　　Small motor, small change gear/speed reducer, electric tool, timing pulley, camera,
　　　fishing reel, industrial robot, office-automation equipment, computer-related equipment,
　　　mold, automatic vending machine, pencil sharpener (blade and gear in rotating part),
　　　sewing machine parts, motor cycle parts (chain wheel, speedometer, starter serration, etc.),
 　　　and automotive parts (speedometer, instruments, automatic window, automatic seat, etc.)

　　　　Example of hobbed gears
　


　　Inquiry

　　　　E-mail：hoblon@kitaisangyo.jp


　　Products

Specifications		8-NC	3N	10N	10NW	10A�U	10A�UW	KS-6N
Max.diameter of gear	DP	12	34	10	10	10	10	25
Max.diameter of gear	inch	6.299	1.181	3.937	3.937	3.937	3.937	2.362
Number of teeth	Z	3〜999	3〜999	3〜999	3〜999	5〜100	5〜100	Number of cutter strokes 400〜1,500
Swivel angle of hob head	°	+160〜-20	±45	±45	+117〜-45	±45	±45
Max.hob spindle speeds	rpm	3,000	6,000	4,000	4,000	1,500	1,500
Floor sjpace	inch	47.83×57.48	54.29×54.17	66.14×68.90	66.14×68.90	60.83×50.20	69.09×53.15	39.37×53.94
Net weight	lb	3,086	3,086	7,936	7,936	4,630	4,630	4,409
Kind of gears to be cut
Spur gear		OK	OK	OK	OK	OK	OK	OK
Helical gear		OK	OK	OK	OK	OK	OK	NG
Worm wheel		OK	OK	OK	OK	OK	OK	NG
Worm		OK	NG	NG	OK	NG	NG	NG
Internal gear		NG	NG	NG	NG	NG	NG	OK
Stepped gear		NG	NG	NG	NG	NG	NG	OK

4-Axis CNC Universal SMALL GEAR HOBBING MACHINE ■　HOBLON 8-NC ・ Numerical control is applied to 4 axis (work-piece rotation,infeed and feed axis,hob-shift-function). So any of change gears do not need to be installed to hobbing machine,and setting up of gear cutting is very easy. Crown hobbing and taper hobbing and worm hobbing cutting cycle are available.(Optional specification). ・ Wide variety of gears(spur gears,helical gears,and worms)can be cut. ・ Making the program is unnecessary.Easy to enter the gear dimension data and cutting condition data conversationally. ・ Double cut hobbing cycle is a standard specification. ・ Hob spindle speeds ; Max.3,000rpm ・ Space saving type requiring small floor area for installation,due to vertical type.
5-Axis CNC High-speed Automatic SMALL GEAR HOBBING MACHINE ■　Hi-PRO 3N ・ Numerical control is applied to 5 axis (work-piece rotation,infeed and feed axis,hob-shift-function,tailstock spindle). So any of change gears do not need to be installed to hobbing machine,and setting up of gear cutting is very easy. Crown hobbing and taper hobbing cutting cycle are available.(Optional specification). ・ Wide variety of gears(spur gears, helical gears.)can be cut. ・ Making the program is unnecessary.Easy to enter the gear dimension data and cutting condition data conversationally. ・ Hob spindle speeds ; Max.6,000rpm. ・ The work spindle is synchronized with the tailstock spindle. ・ Space-saving type requiring small floor area for installation.
5-Axis CNC Heavy Duty High Production GEAR HOBBING MACHINE ・Hand-scraped slideways of bed insure stable, accurate, and long life machining. ・It is possible to correspond to various hobbings of the wet cut(standard specification), 　the dry cut(optional specification),and the high hardness material cut, etc. ・Making the program is unnecessary.Easy to enter the gear dimension data and cutting condition data conversationally.
■　Hi-PRO 10N This hobbing machine is an uqgraded version of the Hi-PRO 10A, which has been the best-belling machine.
■　Hi-PRO 10NW  This hobbing machine is special type of Hi-PRO 10N series, which is the best rigidity of machine in this class. Because of the special designed construction, the big swivel angle of the Hob-head(+117°~-45°) can be set up. So the multithread worm gear also can be cut with high efficiency.
2-Axis NC Heavy Duty High Production GEAR HOBBING MACHINE ■　Hi-PRO 10A�U ・The adoption of the numerical control of infeed and feed axis has realized a wide range of cutting cycles 　including crown hobbing and taper hobbing as well s standard cycle(optional specification). ・Unnecessary to create program by inputting the necessary cutting data to the number table of CRT screen.. ・This hobbing machine has a double cut hobbing function which is standard. ・This hobbing machine is designed to have a mechanical structure putting emphasis on high precision and 　great rigidly, thereby being able to cut a module mn2.5 quite easily.
3-Axis NC Heavy Duty High Production GEAR HOBBING MACHINE ■　Hi-PRO 10A�UW ・Because of the special designed construction, the big swivel angle of the Hob-head can be set up. So the multithread worm gear also can be cut with high efficiency!! Due to the cutting by hob,the precision 　of the worm gear becomes better,comparing with the other way of cutting, such as using single-cutter, 　cutting by lathe etc.. ・Numerical control be applied to Hob-shift function. ・The adoption of the numerical control of infeed and feed axis has realized a wide range of cutting cycles 　including crown hobbing and taper hobbing as well as standard cycle(optional specification). ・This hobbing machine has a double cut hobbing function as standard. specification. ・This hobbing machine is designed to have a mechanical structure putting emphasis on high precision and 　great rigidly, thereby being able to cut a module mn2.5 quite easily
4-Axis CNC High-speed SMALL GEAR SHAPING MACHINE ■　KS-6N ・The machine is developed to cut the high precision spur gear,such as used for reduction gears,cameras,meters, electric instruments and automobile serration. ・Wide variety of gears (External Gear, Internal Gear, Stepped Gear,, and Sector Gear) can be cut. ・Machine has a simple & compact structure.And numerical control is applied,so setting-up of gear cutting is very easy. This machine is one of an epoch-making Small type of High Precision Gear sharpening machine. ・Because of Cutter-relieving style, very silent & high speed stroke can be realized. ・Quantity of movement of the column is big, so it is easy to install and eject work-pieces. ・Total electric power is only 5kVA (Energy saving type) ・Space saving type requiring small floor area (1.37�u) for installation ※ Special Arrangement Type
AUTOMATIC HOB SHARPENING MACHINE ■　SKA ・Materialization of energy-saving,space-saving machine for eco-friendly operation. ・Extremely simple operation by selection of the minimum grinding conditions via an operation panel. ・Hobs with a maximum width of 80mm can be ground. ●Max.dia hob : 2.16〜2.56in ●Max.length of hob : 2.16〜3.15in ●Wheel size : dia.4.921×bore.0.5in ●Wheel spindle speeds : Max.5,000rpm(stepless) ●Net weight : 1,170lbs
DOUBLE FLANK COMPOSITE ERROR TESTER ■　KGT ・This tester is very easy to handle and maintain since the structure is simple but rigid. ・Constance force spring is used in this tester and by means of spring force, gears are engaged and measured. Spring force can be changed by exchanging spring. (Standard measuring force ; 400g) ・As the measurement of engaged gears is tested on parallel axes,fine adjustment is not necessary in operation.Just by setting master gear and tested gear to tester, anyone can handle it easily and possible to get same data without fail. ●Center distance : 0.71〜2.953in ●Master gear size : dia.1.969×bore.0.394in ●Face width of master gear : 0.472〜0.787in ●Max.diameter : 3.937in ●Max.module : DP12.7 ●Max.length : 5.906in

CAUTION
Read operating instructions through carefully before operating the machine.
Some combinations of hobbing requirements may cause an excessive load to be placed on the machine.We can guarantee the precision of the machine providing that the suitable combination
of gear blanks and hobbing requirements are selected.
◎The appearance and/or specifications of the machine are subject change without notice.Please be noted that photo shows a machine with optional accessories.



　　　　　　 　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　


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