Makita TD090DW Owners Manual - Page 7

Fastening torque Proper fastening torque Fastening torque Proper fastening torque Standard bolt N.m (kgf.cm) 80 (816) M12 60 (612) 40 (408) M10 M12 20 M8 M10 (204) M8 0 1.0 2.0 3.0 (S) Fastening time 008823 High tensile bolt N.m (kgf.cm) 80 (816) 60 (612) 40 (408) 20 (204) M10 M10 M8 M8 0 1.0 2.0 3.0 (S) Fastening time 008825 for your screw. The fastening torque is affected by a wide variety of factors including the following. After fastening, always check the torque with a torque wrench. 1. When the battery cartridge is discharged almost completely, voltage will drop and the fastening torque will be reduced. 2. Driver bit or socket bit Failure to use the correct size driver bit or socket bit will cause a reduction in the fastening torque. 3. Bolt • Even though the torque coefficient and the class of bolt are the same, the proper fastening torque will differ according to the diameter of bolt. • Even though the diameters of bolts are the same, the proper fastening torque will differ according to the torque coefficient, the class of bolt and the bolt length. 4. The manner of holding the tool or the material of driving position to be fastened will affect the torque. 5. Operating the tool at low speed will cause a reduction in the fastening torque. Using holster CAUTION: • Do not use for tools such as a drill with a bit installed on them. • Turn off a tool and wait until it comes to a complete stop before placing in the holster. Be sure to close the holster securely so that it holds the tool firmly. Thread a waist belt or similar through holster holder. Put the tool in the holster and lock it with the holster button. Hold the tool firmly and place the point of the driver bit in the screw head. Apply forward pressure to the tool to the extent that the bit will not slip off the screw and turn the tool on to start operation. NOTE: • Use the proper bit for the head of the screw/bolt that you wish to use. • When fastening screw M8 or smaller, carefully adjust pressure on the switch trigger so that the screw is not damaged. • Hold the tool pointed straight at the screw. • If you tighten the screw for a time longer than shown in the figures, the screw or the point of the driver bit may be overstressed, stripped, damaged, etc. Before starting your job, always perform a test operation to determine the proper fastening time 008807 7