SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
10th Edition
ISBN: 9781259489563
Author: BUDYNAS
Publisher: INTER MCG
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 9P
A full journal bearing is 28 mm long. The shaft journal has a diameter of 56 mm with a unilateral tolerance of −0.012 mm. The bushing bore has a diameter of 56.05 mm with a unilateral tolerance of 0.012 mm. The load is 2.4 kN and the journal speed is 900 rev/min. For the minimum clearance assembly find the minimum oil-film thickness, the power loss, and the side flow if the operating temperature is 65°C and SAE 40 lubricating oil is used.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A pressure-fed bearing has a journal diameter of 75.00 mm with a unilateral tolerance of -0.05 mm. The bushing bore diameter is 75.084 mm with a unilateral tolerance of 0.010 mm.The length of the bushing is 62.00 mm. Its central annular groove is 12.00 mm wide and is fed by SAE 30 oil is 53 °C at 200 kPa supply gauge pressure. The journal speed is 2880 rev/min carrying a load of 30 kN. The sump can dissipate 300 watts per bearing if necessary. For minimum radial clearances, find:
the average temperature.
Given the film temperature is 85 o C
It has a full-slide type bearing rotating at a speed of 1975 rpm.A load of 5693 N is applied. SAE 40 oil in bearing at 60C inlet temperatureplanned to be used.Shaft and bushing diameters in bearing with tolerance data 41−0.010 respectively+0.000mmand 41.125−0.000+0.100 mm.Average radial clearance mounting for this bearing with bush length 20.50 mmCalculate the following;a) Bearing characteristic number,b) Minimum lubricant film thickness,c) Eccentricity value,d) coefficient of friction,e) Average oil film temperature andf) Find the Tmax temperature value.
A pipe (f = 0.015) has a diameter of 250-mm and 150 m of length is connected in series with another pipe (f = 0.02) having a diameter of 200 mm and 200 m of length. Calculate the diameter of an equivalent single pipe of length 350 m and friction factor of 0.025
Chapter 12 Solutions
SHIGLEY'S MECH.ENGINEERING DESIGN-EBK>I
Ch. 12 - A full journal bearing has a journal diameter of...Ch. 12 - A full journal bearing has a journal diameter of...Ch. 12 - A journal bearing has a journal diameter of 3.000...Ch. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - A full journal bearing is 28 mm long. The shaft...Ch. 12 - A 114114 in sleeve bearing supports a load of 700...
Ch. 12 - A full journal bearing has a shaft diameter of...Ch. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - A natural-circulation pillow-block bearing with...Ch. 12 - An eight-cylinder diesel engine has a front main...Ch. 12 - A pressure-fed bearing has a journal diameter of...Ch. 12 - Design a central annular-groove pressure-fed...Ch. 12 - Repeat design problem Prob. 1218 using the nominal...Ch. 12 - Table 12-1 gives the Seireg and Dandage curve fit...Ch. 12 - For Prob. 1218 a satisfactory design is...Ch. 12 - An Oiles SP 500 alloy brass bushing is 0.75 in...Ch. 12 - Prob. 23P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- FLUID MACHINERY A duplex, single-acting reciprocating power pump is driven by a 40-HP electric motor at a speed of 120 RPM and delivers water at a temperature of 150oF. The pump operates against a heat of 150 psig. The overall efficiency is 75%. If the estimated slip is 8%, determine the required bore and stroke for a bore – stroke ratio of 0.75. a. bore Answer : __________________ in.b. stroke Answer : __________________ in.arrow_forwardYou are asked to design a plain surface journal bearing to carry a steady radial load of 5.75 kN while the shaft rotates at 950 rpm. The shaft stress analysis determines that an acceptable nominal diameter of the journal is 62.5-mm and an l/d ratio is 1. The shaft is part of a machine requiring good precision. So a minimum radial clearance cmin= 0.040 mm seems appropriate. We shall use SAE 30 oil as a lubricant, at an inlet temperature of 45 oC. Analyze the hypothetical bearing,a) Determine the operating temperature Tave, and operating viscosity μave. b) Determine the minimum film thickness, ho, temperature rise of the lubricant, ΔTC, the total oil flow, Q, and side flow Qs in [mm3/s], the maximum film pressure Pmaxdeveloped in [MPa]. c) Determine the power loss, Hloss in [W], friction torque, Tf in [N-m] d) For minimum radial clearances, perform a design assessment using Trumpler’s criteria.arrow_forwardQ 2. A journal bearing has a shaft diameter of 75.00 mm with a unilateral tolerance of −0.02 mm. The bushing bore has a diameter of 75.10 mm with a unilateral tolerance of 0.06 mm. The bushing is 36 mm long and supports a load of 2 kN. The journal speed is 700 rev/min. For the minimum clearance assembly find the minimum film thickness, the heat loss rate, and the maximum lubricant pressure for SAE 30, SAE 40 and SAE 50 lubricants operating at an average film temperature of 60 °C.arrow_forward
- fluid machineries A duplex, single-acting reciprocating power pump is driven by a 40-HP electric motor at a speed of 120 RPM and delivers water at a temperature of 150oF. The pump operates against a heat of 150 psig. The overall efficiency is 75%. If the estimated slip is 8%, determine the required bore and stroke for a bore – stroke ratio of 0.75. a. bore Answer : __________________ in.b. stroke Answer : __________________ in.arrow_forwardA duplex, single-acting reciprocating power pump is driven by a 40-HP electric motor at a speed of 120 RPM and delivers water at a temperature of 150F. The pump operates against a heat of 150 psig. The overall efficiency is 75%. If the estimated slip is 8%, determine the required bore and stroke, for a bore-stroke ratio of 0.75. a. bore in inches b. stroke in inchesarrow_forwardCompute for the Break Mean Effective Pressure with the following information: Given: Bhp = 1000 Stroke = 5 inches Bore = 5.5 inches Rpm = 2700 Number of cylinders = 8 *Show complete solution. Thank you.arrow_forward
- A full journal bearing has a nominal diameter of 60.0 mm, a bearing length of 30.0 mm and supports a load of 3200 N when running at the design speed of 3200 rpm. The radial clearance has been specified as 0.04 mm. An SAE 20 oil has been chosen and the lubricant supply system is capable of delivering the lubricant to the bearing at 60oC. Using the Raimondi and Body design charts;1.1 find the temperature rise of the lubricant, (19)1.2 the total flow rate required, (1)1.3 the torque required to overcome friction (3)1.4 and the power dissipated in the bearing.arrow_forward15.)A full journal bearing has a journal diameter of 4.000in. with a unilateral tolerance of -0.004in. The bushing bore has a diameter of 4.004in and unilateral tolerance of +0.004in. the bearing is 3in long. The journal load is 3000 lbf and it runs at a speed of 400 rpm. What is the load per projected bearing area 9P) in psi? Choose answer below 75 100 125 250 16.)For the bearing in problem #15, if the lubricant average viscosity is 9 ureym, what is the Sommerfield number (assuming minimum clearance) Choose answer below Between 0.6 and 0.7 Between 0.5 and 0.6 Between 0.3 and 0.4 Between 0.2 and 0.3arrow_forwardPetrol Engine has bore to stroke ratio of 1:1. It is consist with 6 cylinders which have 86mm stroke length and compression ratio of 10.5: 1. If engine's Break Mean Effective Pressure is 1504kPa, find, Engine Clearance Volume Engine Capacity Power Produced at 5600rpm Indicated Mean Effective Pressure ( Mechanical Efficiency of the engine is 31.35%)arrow_forward
- With free body diagram please thank you. Clear and complete solution please. 3. A shaft 70 mm in diameter is being pushed at a speed of 400 mm/s through a bearing sleeve 70.2 mm in diameter and 250 mm long. The clearance, assumed uniform, is filled with oil at 20°C with v = 0.005m²/ s and sp. gr .=0.9 Find the force exerted by the oil in the shaft.arrow_forwardA conical Clutch transmits rotation from one rotating shaft to another though frictional forces on the conical face. The following data is for a conical clutchInside Diameter 25.0 mmOutside Diameter 100 mmCoefficient of Friction 0.33Axial Force 1000NIncluded angle 100 degreeRotational speed 1500rev/minuteCalculate the Torque and Power that can be transmitted without slipping using both Uniform Pressure Theory and Uniform Wear Theoryarrow_forwardA hallow steel shaft transmit 600km at 500 rpm.the minimumarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University Press
Mechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSON
Thermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEY
Mechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage Learning
Engineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
BEARINGS BASICS and Bearing Life for Mechanical Design in 10 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=aU4CVZo3wgk;License: Standard Youtube License