FAQ / Taiwan_Based High Precision Ground Gears & Gear Increaser/Reducer For 40 Years | Shiuh Cheng Precision Gear Co., Ltd.

Example of Gear Precision Report

Example of Gear Precision Report

What is the gear accuracy? Which gear accuracy standards are most commonly used?

Gear accuracy is judged by the error level. The accuracy consists of three components, namely the tooth profile (ie the pressure angle), the Lead (ie the helix angle) and the pitch.
Attached is an example of a tooth measuring report.
The most commonly used standard in Taiwan is the Japanese standard JIS, followed by the German standard DIN.
Because Shiuh Cheng gear grinding machine is a German brand, the accuracy report provided is preset to the German DIN standard.
The following chart is a comparison table of JIS, DIN, AGMA standards.
The smaller the accuracy grade number of JIS and DIN standards, means the higher gear accuracy;
The AGMA standard is opposite.
The gear accuracy ‘DIN 1 to DIN 4’ is mainly used for master gears, quality ‘DIN 5 to DIN 6’ is used for precision gears.


CountryTypePrecision Grade
U.S.A.AGMA 161514131211109876
JAPANJIS   012345678
GermanyDIN123456789101112

Introduction of What is the gear accuracy? Which gear accuracy standards are most commonly used? | Taiwan_Based High Precision Ground Gears & Gear Increaser/Reducer For 40 Years | Shiuh Cheng Precision Gear Co., Ltd.

Located in Taiwan since 1994, Shiuh Cheng Precision Gear Co., Ltd. is a precision gear manufacturer. Main products, including level JIS O and German DIN4 level of precision ground gears & gear increasers/reducers.

With more than 40 years design and manufacturing gear increaser and reducer experience, SC GEAR is specialized in customizing precision gears and provide customized gearbox, overhaul, and reverse engineering services.

SC GEAR has been offering customers high-quality gears and gearboxes since 1994, both with advanced technology and 40 years of experience, SC GEAR ensures each customer's demands are met.