A straight (cylindrical) roller bearing subjected to 1387 N of radial load is to be selected for an application factor of 2,2. The life is to be 40 Kh at a speed of 720 rev/min and exhibit a reliability of 0,99. What basic load rating (C10) should be used in selecting the bearing if the bearing is selected from a catalog of bearing manufacturer where LR=5000h, nR=500 rpm. The weibull parameters are xo=0.02, (0-x.)=4.439, and bo=1.483.

A straight (cylindrical) roller bearing subjected to 1387 N of radial load is to be selected for an application factor of 2,2. The life is to be 40 Kh at a speed of 720 rev/min and exhibit a reliability of 0,99. What basic load rating (C10) should be used in selecting the bearing if the bearing is selected from a catalog of bearing manufacturer where LR=5000h, nR=500 rpm. The weibull parameters are xo=0.02, (0-x.)=4.439, and bo=1.483.

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

An 02-seris single-row deep-groove ball bearing with a 90 mm bore (C0 = 62 kN, C10 = 95.6 kN) is loaded with a 4.34 kN axial load and a 10 kN radial load. The inner ring rotates at 600 rpm (v=1). What is the FaC0? Should X1/Y1 or X2/Y2 be used to caculate the equivalent radial load? Determine the equivalent radial load experienced by this bearing. What is the bearing’s in-use reliability, assuming a design life of 2*10^8 revolutions and an application factor of 1.2?
Problem 4. The deep groove ball bearing DIN 625 – 6208 which is rotating with 1000 rpm is loaded by a radial force F. = 10000 N. Determine the bearing rating life in millions of revolutions L10. ww www B D d
A device contains two bearings is to operate at 300 rev/min, 8 hours per day, 5 days per week for 5 years with a reliability of 0.99. The design load is 2024 N and an application factor of 1.2 is appropriate. Find the catalog rating C10 For ball bearings For roller bearings The Weibull parameters are and Use SI units. Take the relations as and Where the subscripts D: desired R: rating f: factor
Design a single row deep groove ball bearing with basic dynamic load rating of 25.5 KN to be used in a turbine to carry a radial load of 1607 N. The expected life of the bearing is 5226 hours at 523 rpm. Take k=3 for all types of ball bearings. Take the value of the shock load factor as 1.8. The radial and axial load factors are 1.3 and 1.6 respectively and the rotational factor is 1. Calculate: i) Expected life of bearings in millions of revolutions ii) Design equivalent dynamic load in N iii) Basic equivalent dynamic load in N iv) Axial load acting on the bearing in N
Select an angular contact ball bearing to carry a radial load of 336lb at a shaft speed of 1800 rpm for 5500 hours. Anapplicationfactorof1.2isappropriate. Use a reliability of 96%.
Do fast and correct
A ball bearing is subjected to a radial load of 2000 Nat 880 rpm for 40% of the time and to a radial load of 1000 Nat 1760 rpm for the remainder of the time. Expected life is to be 10 years at 6 hours per day. Find the minimum value of the basic rating load C that the bearing must have. Loads are steady. (it is assumed that the bearing has but one row of balls. A working year will be taken as 250 days.) Ans. C = 15,160 N
Calculate the basic rating life at 90% reliability for the following cylindrical roller bearing and conditions.Fr 5.05 kNFa 3.12 kNBearing: NU 1010 ECP (on pp 522 in the SKF catalogue)Clearance: Normal Give the answer in millions of revolutions.
A machine operated for 8 hrs a day under light impact is fitted with a shaft with bearings fitted at A and B. The shaft requires a design life of 25 000 hours at a speed of 475 rpm. The load on the shaft is indicated in the figure. The reliability goal for the shaft is 95%. Determine the following: Multiple of rating life required (Xp) b. а. Catalogue rating (C10) Specify a suitable 02-series deep groove ball bearing d. c. The actual shaft reliability The maximum speed that the bearing should be applied at to ensure a life of 40 000 hrs at the same reliability. е. 3000 N 5000 N 500 mm 450 mm 600 mm A В
2) A shaft is designed with two 6305 bearings. At bearing 1, the radial load is 20 lb, and at Bearing 2, the radial load is 40 lb. What is the expected life of EACH bearing assuming a reliability of 97%? What is the reliability for BOTH bearings together?
A rolling bearing has a number 6315 and rotating with n= 50 rev/min. This bearing has a radial force Fr=6000N and a axial force Fa= 5000 N. Calculate the life of bearing (Lh).
The shaft below is supported by 0.5 in long copper-iron light-duty journal bearings at A and B. Determine the maximum allowable shaft speed (in rpm) consistent with a bearing factor of safety of 1.8. F = 225 lbf Bearing A Bearing B 1.1 in Walow = ? 5.75 in 0.5 in 1.5 in 0.5 in