4) A 1.5 inch Major Diameter, 3 start thread 1018 CD steel, straight (square) thread screw is being used to slowly raise a 1200 lb load supported by a 2.2 inch mean diameter cast iron collar and a bronze nut (the nut has 4 threads engaged with the screw). (Assume Straight and Acme screws have same preferred pitch. Use p=0.23 inch if you can't find it.) a) What torque is necessary to raise the load? b) What is the safety factor for bearing stress? c) What is the safety factor for yielding?

4) A 1.5 inch Major Diameter, 3 start thread 1018 CD steel, straight (square) thread screw is being used to slowly raise a 1200 lb load supported by a 2.2 inch mean diameter cast iron collar and a bronze nut (the nut has 4 threads engaged with the screw). (Assume Straight and Acme screws have same preferred pitch. Use p=0.23 inch if you can't find it.) a) What torque is necessary to raise the load? b) What is the safety factor for bearing stress? c) What is the safety factor for yielding?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

In gear designs, geometric numbers, I and J will be needed to calculate bending and contact stress numbers per per AGMA standards. Please select all the answers that apply. Geometry factor I will be different for the pinion and for the gear. Geometry factor J will be the same value for both the pinion and for the gear. Geometry factor J will be the different for the pinion and for the gear. Geometry factor I will be the same value for both the pinion and for the gear.
Read the question carefully and give me all right solutions. Internal torque at rod 1 (kip-ft) Magnitude of shear at rod 2 & 3(ksi) Rotation angle at rod 1 (deg) Rotation angle at flange C (deg)
appropriate bearing. 3. A bearing is required to support a radial loạd of 2800 N for a shaft of 30 mm nominal diameter spinning at 750 rpm. The desired life is 10 000 hours. From the limited range available in Tables 9.6 to 9.8, select and specify an appropriate bearing, justifying the choice. nt is reguired to carry an
4 A double-threaded power screw with square threads pushes against a load of 3,641 N at a speed of 15 mm/s. The screw has a major diameter of 20 mm and a pitch of 3 mm. The frictional coefficient of the threads is 0.25, and collar friction is negligible. What is the rotational speed of the screw in units of revolutions per minute? Type your answer 2 points
Consider a thread callout of Dia 0.375-10 UNF-2B. How far will the thread travel if it is subjected to 3 full rotations? (Assume infinite thread lengths for simplicity)? Units are in Inches List your answer in a decimal format.
Consider following thread call-out 3/4-10 UNC-2B, what does the 2B mean? is the standard quality for a bulk of internal threads average quality, internal threads average quality external threads, but not as good as 3B quality average quality internal threads, but not as good as a 3B quality average quality, external threads
A rolling contact bearing is subjected to the following work cycle: (a) Radial load of 6000 N at 150 r.p.m. for 25% of the time; (b) Radial load of 7500 N at 600 r.p.m. for 20% of the time; and (c) Radial load of 2000 N at 300 r.p.m. for 55% of the time. The inner ring rotates and loads are steady. Select a bearing for an expected average life of 2500 hours.
2. UNC thread diameter D=3/4 in. Number of threads/in N= 10 Calculate: a. Pitch, b. Width of the flat, c. Depth of the thread, d. Minor diameter e. Pitch diameter, f. Tap drill size, g. Helix angle
Required information For a bolted assembly with six bolts, the stiffness of each bolt is kb 2 Mibf/in and the stiffness of the members is km = 13 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. It is desired to find the range of torque that a mechanic could apply to initially preload the bolts without expecting failure once the joint is loaded. Assume a torque coefficient of K = 0.2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts once the load is applied. The maximum bolt preload that can be applied is Ibf.
Ex] A double-threaded right-handed worm gear transmits 15 Hp at 1150 rpm. The pitch of the worm is 0.75 inch and the pitch diam of 3 inches. The pressure angle is 14.5° and the coefficient of friction is 0.12. a) Find the tangential force on the gear. b) Find tangential force on worm. c) Find the separating force Solution: (To be discussed by the Instructor during the lecture period)
What type of preloading system of ball screws is shown on the figure below? Tension Nut B Nut B Spacer Fao- Nut A Fao Tensile preload Compression Nut B Compressive preload Spacer Screw shaft Spacer Tension Screw shaft Nut A Compression Nut, A
Read carefully. Please solve ellaborately and include the untis in every step, and write your solutions clearly and readable if your solution is in written form, Your work will be appreaciated much. Thank You! The area of American, UNC bolt is 0.61i .in2 with pitch of 5mm. A. What is the bolt nominal diameter, mm? B. The bolt designation.