What should be the torque of a bolt?
not present B Bolt Tension Corresponding to 65 Recommended Assembly Torque D Diameter P Pitch k kN N Nm M M1.6 0 0.35 0 0.19 0 0.06 M M2 0 0.40 0 0.31 0 0.12 M M2.5 0 0.45 0 0.50 0 0.25 M
How much torque do I need for a screw?
Class 12.9 ISO Metric Coarse Pitch Bolts & Screws. Bolt Tension Recommended Corresponding to Assembly 65% of Proof Load Torque kN Nm 3.17 1.9 5.54 4.4 8.97 8.9 12.7 15 23.1 37 36.6 73 53.2 128 72.8 203 98.8 316 121 436 155 620 191 840 222 1066 289 1561 354 2124 437 2884 515 3708.
What are the recommended torques for an assembly?
Bolt Tension Recommended Corresponding to Assembly 65% of Proof Load Torque kN Nm 3.17 1.9 5.54 4.4 8.97 8.9 12.7 15 23.1 37 36.6 73 53.2 128 72.8 203 98.8 316 121 436 155 620 191 840 222 1066 289 1561 354 2124 437 2884 515 3708 Page 3
How much torque is needed to untighten a threaded fastener?
Typically the torque needed to untighten a newly tightened fastener is around 10% to 30% less than the torque to tighten it further. When you are tightening a threaded fastener a significant amount of torque is needed to overcome friction in the threads and under the nut face (or the bolt head, if the bolt is rotated).
How can I counteract the torque on the crank shaft?
The torque provided through the drivetrain will be more than enough to counteract the torque put on the crank hub bolt. If it’s a front wheel drive, have someone stand on the brake pedal, or wedge something onto the brake pedal to hold the front rotors still.
How much torque do you need to crank a car?
It seems I have to replace the oil seal at the pulley-side of my crankshaft. According to the technical manual of my car, the central screw should be torqued with 120-145Nm. I don’t know how much torque is needed to crank my motor, but I guess that 120-145Nm is enough. So, how do I prevent it from cranking?
Is there a way to calculate the torque of a bolt?
Common bolt torque values can be looked up, but finding an accurate reference isn’t always easy. Bolt torque can be checked with a tool such as a torque wrench, but without a value as a guideline, a torque wrench offers no advantage. To arrive at the correct torque value, several other values must be found first.
Is it possible to convert a torque wrench to a bolt?
It is possible to convert between the various systems. Torque wrenches are simply tools for measuring resistance to rotation. There is a correlation between the tension in the bolt and the effort it takes to turn it. Any tool, even a torque wrench, should be used with common sense.