Other Bevel Worm Screw Bevel Miter CP Racks R . Internal Helical Spur Products Gearboxes Gear Pair Gears Gears Gears & Pinions ac s Gears Gears Gears * The precision grade of products with a module of less than 0.8 is equivalent to the value shown in the table. [Caution on Product Characteristics] H For products with a tapped hole, a set screw is included. H The allowable torques shown in the table are calculated values according to the assumed usage conditions. Please see page 35 for more details. H The backlash values shown in the table are the theoretical values for the backlash in the normal direction for a pair of identical gears in mesh. H If the bore size is less than 0 4, the tolerance is H8. If the bore size is 0 5 or 0 6, and the hole length exceeds 3 times of the bore size, the tolerance is also H8. H The use of S3T and S1T shaped set screws for fastening gears to a shaft are only applicable to light load usage. For secure fastening, please use dowel pins, in combination. [Caution on Secondary Operations] H Please read “Cautions on Performing Secondary Operations” on Page 36 when performing modification and/or secondary operations for safety concerns. H Avoid performing secondary operations that narrow the tooth width, as it affects precision and strength. * Please see book one for additional products in these modules. Other Bevel Worm Screw Bevel Miter CP Racks r . Internal Helical Spur Products Gearboxes Gear Pair Gears Gears Gears & Pinions ac s Gears Gears Gears 108 For updated information, please visit qtcgears.com.