Helical-toothed gear wheel / shaft
{"Image ImageDescription": "Fast drive gears for roughing reduction R4 roller strips.\nDrive gears: diameter  3900 mm gear wheel  - module 30 - 119 teeth - 770/770 mm facewidth, through hardened  high strength alloy steel (Hardness HB 280).\nBihelicoidal pinion: diameter 1150 mm, module 30 - 35 teeth -770/770 mm facewidth , through hardened  high strength alloy steel (Hardness HB 310).", "Image XResolution": "240", "Image YResolution": "240", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop Lightroom", "Image DateTime": "2013:08:02 16:14:31", "Image ExifOffset": "520", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "240", "Thumbnail YResolution": "240", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "632", "Thumbnail JPEGInterchangeFormatLength": "20078", "EXIF ExifVersion": "0221"}