HIROTA Co., Ltd.

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Business Summary We can mass-manufacture precision shafts and other products by applying our high-precision grinding technology to cut blanks, rolled blanks or pressurized blanks.
Name & Brand of the Products, etc.
Aspects and/or features of the product We always have in stock needle rollers with diameter tolerance of 3 micrometers. We are good at high-precision grinding to produce precision shafts and parallel pins. Surface roughness can be provided through our super-finish Sparoll processing technology. We also have rich experiences in form rolling for the production of worm gears and trapezoidal screw threads. We can take orders up to 30 tons.
Information of the main materials, costs and filed of use
Products or parts name Needle roller
Products or parts description Made of JIS-SUJ2 steel with hardness (HRC) of 58 or higher; Standard product available in stock
Features Standard diameter tolerance is 3 micrometers, but it is possible to make it 1 micrometer.
Surface roughness at Ra0.1 or lower
Field of use Home electric appliances, automobiles
Products or parts name Motor shaft
Products or parts description Made of SUS420 steel with hardness (HRC) of 50 or higher; A variety of models available in stock
Features OD accuracy within 3 micrometers as a standard; OD accuracy of 1 micrometers is also available.
Field of use Vibration motor, Micro motor
Products or parts name Pin
Products or parts description Made of SUS304 steel with hardness (HV) of 400 or higher; A variety of models available in stock
Features OD accuracy within 3 micrometers; Surface roughness Ra of 0.1 micrometers or less is also available.
Field of use Pinion shaft, Motor shaft, Roller
Photograph of the Product
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Accreditations for your plants or qualities by authority
Patents, if any (domestic or international)... Yes or No
Corporate name HIROTA Co., Ltd.
Headquarters Address Post cord (zip code) 542-0061
Address 1-2-19 Andojimachi, Chuo-ku, Osaka, Japan
Branch Office Address Post cord (zip code)
Address
Year of Establishment
Name of the Representative Mr. Yoshihiko Hirota
Paid-in Capital 13,000,000 yen
Annual Sales
Inquiry Contact Department Sales Dept.
Title Manager
Name Mr. Hiroyuki Takemura
Tel 81-6-6768-5211
Fax 81-6-6768-0853
URL http://kkhirota.co.jp

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