Main Data

• Description: Aluminum plate rolling mill gear shaft
• GEARX No.: SDH30-23G 
• Module: 30 mm
• No. of teeth: 23
• Pressure angle: 20°
• Helical angle: 25°
• Material: 17CrNiMo6
• Heat treatment: Through quenching and tempering, then carburized hardened.
• Tooth hardness: HRC58-62
• Case hardening depth(CHD): 3.1-3.6 mm
• Tip Diameter: 821.33 mm
• Reference diameter: 761.33 mm
• Face width: 2×740 mm
• Tooth surface finish: Ground
• Accuracy grade: DIN 6
• Rotational speed: 2981 RPM
• Weight of gear blank: 16,523 kg
• Weight: 10,740 kg

Application

• Aluminum plate rolling mill

The Main Fabrication Procedure

• Forging the gear blank.
• Rough machining
• Ultrasonic inspection
• Quenching and tempering to HB270-320
• Turning the gear.
• Hobbing
• Dimensional (run out) and quality test of the hobbing
• Grinding
• Inspection magnetic inspection the tooth flank, and then magnet demagnetization
• Packaging and delivery to the customer

Technical Documents

• Inspection certificate of material
• Heat treatment certificate
• Certificate of ultrasonic inspection
• Magnetic particle detection certificate(on tooth flank)
• Size tolerance and geometric tolerance report
• Inspection report of tooth quality

Relative Standards

• ANSI/AGMA 6004-F88 Gear Power Rating for Cylindrical Grinding Mills, Kilns, Coolers and Dryers
• ISO 6336 Calculation of load capacity of spur and helical gears
• DIN 3990 Calculation of load capacity of cylindrical gears