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Recent content by SSWWRITE
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Fatigueproof bolt failure
shaft size is 3/4 hex about 22in. long. the thread is turned and machined on both ends. material is fatigueproof from niagara lasalle. no heat treat. not sure of load. They tell me that they put a nut on the thread and torque to 80ft. lbs and it snaps. the fracture looks like Styrofoam in a...- SSWWRITE
- Post #3
- Forum: Mechanical engineering general discussion
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Fatigueproof bolt failure
I am manufacturing a hex shaft( fatigueproof material) with a 1/2-13 o.d. thread 1'' long on the end. Customer is having parts break at the threads. They are telling me that the torque on this should go up to 165ft. lbs. - Is this correct? I could not find a formula for the fatigueproof. They...- SSWWRITE
- Thread
- Replies: 11
- Forum: Mechanical engineering general discussion
