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A single deep grove ball bearing series 3, the outer ring rotates at 1500 rpm with little shock load. Bearing has a bore diameter of 45 mm, working with a load 1890 lb radial and 1250 lb axial load. Determine the rated life and median life of the bearing. Use the design factors according to the attached table.

A single deep grove ball bearing series 3, the outer ring rotates at 1500 rpm with little shock load. Bearing has a bore diameter of 45 mm, working with a load 1890 lb radial and 1250 lb axial load. Determine the rated life and median life of the bearing. Use the design factors according to the attached table.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A single deep grove ball bearing series 3, the outer ring rotates at 1500 rpm with little shock load. Bearing has a bore diameter of 45 mm, working with a load 1890 lb radial and 1250 lb axial load. Determine the rated life and median life of the bearing.

Use the design factors according to the attached table. 

Table 9-8 Ball bearing service factors, Fs Multiply Calculated Load by Following Factors Type of Service Ball Roller Bearings Bearings 1.0 1.0 Uniform and steady load Light shock load Moderate shock load 1.5 1.0 2.0 1.3 Heavy shock load. Extreme and indeterminate shock load 2.5 1.7 3.0 2.0
Transcribed Image Text:Table 9-8 Ball bearing service factors, Fs Multiply Calculated Load by Following Factors Type of Service Ball Roller Bearings Bearings 1.0 1.0 Uniform and steady load Light shock load Moderate shock load 1.5 1.0 2.0 1.3 Heavy shock load. Extreme and indeterminate shock load 2.5 1.7 3.0 2.0
Table 9-5 Factor X and Y for ball and roller bearings Single-Row Bearing Double-Row Bearing Contact Angle a, deg iF.' Co FalVF,>e Fa/VF, <e FalVF, >e Y Radial-contact groove ball bearing" Falind? 2.30 1.99 0.014 2.30 0.19 25 50 0.028 0.056 1.99 0.2 1.71 1.55 0.56 1.45 1.71 2/4 0.084 1.55 00 300 500 0.11 0.56 1.0 0 0.3 1.45 1.31 0.17 1.31 1.15 1.04 1.00 0.34 0.28 1.15 0.38 0.42 0.42 0.44 1.04 750 0.56 1.00 1000 Angular-Contact groove ball bearings Folnd? 0.014 Use X. Y. 2.78 3.74 0.23 25 0.028 0.056 0.26 0.30 and e val- 2.40 3.23- 50 100 2.78 2.52 ues appli- 2.07 0.085 0.11 0.17 0.28 0.42 0.56 0.34 0.36 0.40 0.45 0.50 0.52 cable to 1.87 150 1.0 1.75 1.58 1,39 1.26 1.21 0.78 2.36 2.13 1.87 1.69 1.63 0.56 single-row radial- contac? bearings 200 300 500 750 1000 0.014 0.029 0.057 0.086 0.46 0.11 0.17 0.29 0.43 0.57 1.88 1.71 1.52 1.41 1.34 1.23 1.10 1.01 2.18 1.98 1.76 3.06 2.78 2.47 2.29 0.75 2.18 2.00 1.79 1.64 1.63 0.29 0.32 25 50 100 150 0.36 0.38 0.40 0.44 0.49 0.54 0.54 10 1.63 1.55 1.42 1.27 1.17 1.16 1.0 200 300 500 750 1000 1.00 0.015 0.029 0.058 0.087 0.12 0.17 0.29 0.44 0.58 1.47 1.40 1.30 1.23 1.19 1.12 1.02 1.00 1.00 1.65 1.57 1.46 1.38 1.34 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2.00 0.72 1.93 1.82 1.66 1.63 1.63 0.38 0.40 0.43 0.46 0.47 0.50 0.55 0.56 25 50 100 150 200 15 0.44 1.0 300 500 750 1000 0.56
Transcribed Image Text:Table 9-5 Factor X and Y for ball and roller bearings Single-Row Bearing Double-Row Bearing Contact Angle a, deg iF.' Co FalVF,>e Fa/VF, <e FalVF, >e Y Radial-contact groove ball bearing" Falind? 2.30 1.99 0.014 2.30 0.19 25 50 0.028 0.056 1.99 0.2 1.71 1.55 0.56 1.45 1.71 2/4 0.084 1.55 00 300 500 0.11 0.56 1.0 0 0.3 1.45 1.31 0.17 1.31 1.15 1.04 1.00 0.34 0.28 1.15 0.38 0.42 0.42 0.44 1.04 750 0.56 1.00 1000 Angular-Contact groove ball bearings Folnd? 0.014 Use X. Y. 2.78 3.74 0.23 25 0.028 0.056 0.26 0.30 and e val- 2.40 3.23- 50 100 2.78 2.52 ues appli- 2.07 0.085 0.11 0.17 0.28 0.42 0.56 0.34 0.36 0.40 0.45 0.50 0.52 cable to 1.87 150 1.0 1.75 1.58 1,39 1.26 1.21 0.78 2.36 2.13 1.87 1.69 1.63 0.56 single-row radial- contac? bearings 200 300 500 750 1000 0.014 0.029 0.057 0.086 0.46 0.11 0.17 0.29 0.43 0.57 1.88 1.71 1.52 1.41 1.34 1.23 1.10 1.01 2.18 1.98 1.76 3.06 2.78 2.47 2.29 0.75 2.18 2.00 1.79 1.64 1.63 0.29 0.32 25 50 100 150 0.36 0.38 0.40 0.44 0.49 0.54 0.54 10 1.63 1.55 1.42 1.27 1.17 1.16 1.0 200 300 500 750 1000 1.00 0.015 0.029 0.058 0.087 0.12 0.17 0.29 0.44 0.58 1.47 1.40 1.30 1.23 1.19 1.12 1.02 1.00 1.00 1.65 1.57 1.46 1.38 1.34 1.26 1.14 1.12 1.12 2.39 2.28 2.11 2.00 0.72 1.93 1.82 1.66 1.63 1.63 0.38 0.40 0.43 0.46 0.47 0.50 0.55 0.56 25 50 100 150 200 15 0.44 1.0 300 500 750 1000 0.56
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