Oil-rig gear shaft
Why choose SHIUH CHENG
1. The most professional technology
Our founder, director, and quality control are all from Gear Factory of Formosa Heavy Industry, relevant work experience and qualifications are over 30 years; therefore, either experience or technology is surely second to none in the field. In addition, based on the concept of sustainable operation, SHIUH CHENG let master workmen pass down their professional technology to next generation through systemic education and training.
2. The most advanced equipment
High-quality precision gears mostly depend on grinding process. For this reason, SHIUH CHENG spared no expense to introduce the latest German "GLEASON PFAUTER 2400G", "HOFLER RAPID 800" and "HOFLER RAPID 2000" gear grinding equipment. Regarding gear grinding technology, German equipment is the most advanced, far ahead of other countries. In the future, SHIUH CHENG will continue to introduce the most advanced equipment to reward the permanent support of customers by high-quality products.
The Report of Gear Tooth Profile and Lead
Commonly metallic Materials for Precision Gears
Classification | JIS | JIS(Prev.) | DIN | AISI | Heat Treatment | |
Carburization | High Frequency | |||||
Carbon Steel | S45C |
| 1045 | • | ||
Alloy Steel | SCM415 | SCM21 | 15CrMo5 | 4115 | • | |
SCM420 | SCM22 | 18CrMo4 | 4118 | • | ||
SCM435 | SCM3 | 34CrMo4 | 4135 | • | ||
SCM440 | SCM4 | 42CrMo4 | 4140 | • | ||
SNCM220 | SNCM22 | 21NiCrMo2 | 8620 | • | ||
SNCM439 | SNCM8 | 40NiCrMo6 | 4340 | • | ||
|
| 17CrNiMo6 | 4820 | • | ||
If you need our quotation, please feel free to mail us with drawing and detailed specification, then we will quote you our best price ASAP.




