Straight Hardened & Ground Pinion DIN 7 Manufacturing Description: Precision Grade: ¡]JIS Grade 3) DIN 7e25 Material: (S45C Medium Carbon Steel) C45 Type: Straight Rack Treatment of Teeth: Ground Hardness: Heat treatment by High Frequency; 50~58 degree. Pressure Angle: 20 degree. YYC gear pinions include various types such as straight pinions, and helical pinions which could be made not only specially by customer¡¦s demands but also from economy soft pinion to internationally ultra high precise standards. YYC also provides standard catalogues to select. Currently, YYC gear pinion can make from module 0.5 to module 20. Materials are very diverse such as S45C (Medium Carbon Steel), SCM440 (Chromium Molybdenum Alloy Steel), SCM415, SUS Stainless Steel, Plastic, Copper Alloy etc. Quality from ultra high precise DIN 5 to economy DIN 10. YYC can do high frequency, teeth ground, black coated, phosphates, carburized, etc. to serve different needs.