I have an Italian drawing of a double end stud where in the material spec. has 10.9 UNI 3740. I assume the bolt should conform to Class 10.9. Can anyone steer me in the direction or give explanation for the Italian standard UNI 3740.
Thanks!
I have a German drawing calling out a heat treament requirement. I think it is based on the Vickers scale. It is a large centering ring for a hub that helps keep a shaft centered while in the hub and the ID of the ring is hardened to resist wear.
The drawing has 740 #40HV then beneath that it...
I am determining the the maximum effective and minimum actual tooth thickness for an external spline.
The internal splines have a circular space width for maximum effective of 0.0876" and minimum effective of 0.0835". The P is 20/40 with 28 teeth and conform to the SAE side fit 37.5° pressure...
What would be a good material that is hardenable by heat treatment (up to 40 to +50C), corrosion resistant, and can handle subzero temps. down to -50°F (-46°C). I was looking at 440C SS but am concerned with the low temps. and becoming brittle. Is 440C rather ductile at -50°F?
How about a nickle...
I was at the understanding that the load inertia (lbft^2) is reduced or increased based on the gear ratio. Example:
10,000 lbft^2 at 756 RPM, the reflected load inertia on the low speed side of 282 (2.681 gear reduction) will give 26,810 lbft^2.
But I have seen an equation where the reduction...
I am trying to find literature on large internal metric screw threads. Particularly M640 with a 8 pitch. Machinery's Handbook only goes up to 6 pitch for the tolerance grades 4 through 8.
What literature is out there that will provide the tolerances for a pitch 8, and the min/max for the major...
I am trying to confirm how to calculate the approximate torque capacity of a bolted flange. First you take the preload (P) that is generated by a bolt that is torqued to a certain amount. You then multiple P times the number of bolts in the bolt pattern to find the total preload. With the total...
I need to calculate the torque capacity of an involute spline where the internal and external spline are shrink fitted together. Referencing the Machinery's Handbook (25th Ed) the major diameter of the external spline cannot exceed Ø25". I was using three formulas:
Shear stress under roots of...
We had to chrome plate the bore of a universal flange yoke. The bore is where the bearing is pressed in, and the bore Ø over time had worn had exceeded the tolerance limit, thus we chrome plated the bore and remachined to provide the proper fit. Looking at it now, some of the plating is missing...
My company is involved with repairing large universal drive shafts for industry. We have a unit returned we repaired in the past. We had to chrome plate the bore of one of the flange yoke. The bore is where the bearing is pressed in, and the bore Ø had exceeded the tolerance limit, thus we...
I have a drawing that calls out a material of the component with European standard specification EN 10084 17NiCrMo6-4. What would be a good case hardening steel substitute for this. Would something like 4320 be good?
What other suggestion do you all have?
Thanks
I have TK Solver 4 and would like to set up a porgram solving deflection in a stepped shaft. Any areas that have programs people have created with TK Solver? I will need to brush up on TK Solver since I haven't used it since school which was years ago.........
I have a Ø6" shaft that necks down to Ø4.70" which is splined. The shaft is subjected to torsion and bending.The splined shaft goes through a cyclical bending as it rotates, and this eventually lead to the shaft breaking after a little over two years of operation. The shaft broke right...
Suppose you have a shaft starting from left to right with a Ø3.75" for 17" length, then it steps up to Ø4.5" long for 24" length then steps back down to Ø3.75" for 17" length. How do you take the equations and incorporate the differences in "I" the moment...
What is the US grade equivalent to EN S355N material.
We have an ASM 'Worldwide Guide To Equivalent Irons and Steels' 3rd edition, and I could not find it. For the future where can you find equivalents for this EN series?
I have an application for a drum brake where the brake shoes contacts the drum over an arc greater than 45°. The brake shoes pivot on the brake arms. Where is there literature with equations and analytical porcedures to determine forces (torques) applied to the drum face?
Thanks
How do you calculate the point where water inside a copper drum begins to "rim" (attaches to the ID of the drum) due to centrifugal force. The drum starts rotating at 180 RPM to a top speed of 1300 RPM. The ID of the drum is 15.5 inches and 28 inches long. Water enters/exits using a...
