Involute Gear Hobbing and Shaving Data Sheet for 1st Speed Loose Gear

Manufacturing data sheet for a 1st speed loose gear (part number CHCV6R-7100-AA) used in automotive transmissions. Made from 28CrS4 steel according to EN 10084 standards, this involute spline gear features 42 teeth with a 30° pressure angle. Critical dimensions include a reference diameter of 84.4±0.1mm and tip diameter of 91.228mm minimum. The gear requires precision machining with specific gear tooth profiles, chamfers (0.4×45°±5°), and specialized surface finishes (Ra 0.63-0.75). The drawing includes comprehensive manufacturing data for both hobbing and shaving operations, with detailed tolerance specifications for critical features like shoulder details, root fillet details, and tip chamfer details. Shot peening requirements are specified according to standard GFT_4010 “Class 2” with minimum 100% coverage in designated areas.