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The request for this project is to design the diameter of the output shaft of a single reduction gearbox with a 20° pressure angle involute spur gear set. The gearbox consists of two (2) shafts, four (4) bearings, two (2) spur gears, and gearbox steel casing, as shown in Figure 1 below. The gearbox is powered by a 3 kW Power, 50 Hz AC electric motor with a speed of 1440 rpm. The main goal of the gearbox is to reduce the speed to 575 rpm. The gearbox had to abide by the following: 1. The weight of the motor and gears do not add to the bending or shear stresses of the system and will be ignored when doing calculations. 2. The entire system is bolted to a horizontal bedplate and will only be accessible from the top surface. 3. The machine components, including bolts, shafts, and bearings, must all be designed with a factor of safety (ns) as 2.5.

The request for this project is to design the diameter of the output shaft of a single reduction gearbox with a 20° pressure angle involute spur gear set. The gearbox consists of two (2) shafts, four (4) bearings, two (2) spur gears, and gearbox steel casing, as shown in Figure 1 below. The gearbox is powered by a 3 kW Power, 50 Hz AC electric motor with a speed of 1440 rpm. The main goal of the gearbox is to reduce the speed to 575 rpm. The gearbox had to abide by the following: 1. The weight of the motor and gears do not add to the bending or shear stresses of the system and will be ignored when doing calculations. 2. The entire system is bolted to a horizontal bedplate and will only be accessible from the top surface. 3. The machine components, including bolts, shafts, and bearings, must all be designed with a factor of safety (ns) as 2.5.

Elements Of Electromagnetics
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
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APPENDIX A (Mechanical Properties of the Cold-Drawn Steel Used for Shafts). Steel Yield Strength Brinell Hardness Modulus of Ultimate Tensile Strength (MPa) Designation (MPa) (BHN) Elasticity (GPa) 40C8 667 324 200 200 45C8 696 353 260 208 50C4 747 373 320 201 50C8 765 392 345 212 50C12 706 400 360 205 APPENDIX B (Preferred Standard Sizes of Cold-Draw Steel Shafts in mm). Steel Diameter Size (mm) Price Designation (R/meter length) VAT Excluded 40C8 10, 15, 20, 35, 40, 45, 50, 55, 60, 65, 70, or 75 2 789,08 50C8 250, 270, 280, 300, 400, 500, 530, 600, 700 or 800 3 189.32 45C8 5, 10, 15, 20, 35, 40, 45, 50, 55, 70, 75, 80, 85, 90, 95 or 100 2 879,49 APPENDIX C (Preferred Standard Diameter Sizes of Cold-Draw 817M40 Steel Shafts in mm). 5, 10, 12,14,16, 18, 20, 25, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 125, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 280, 300, 400, 500, 530, 600, 700, 800
Transcribed Image Text:APPENDIX A (Mechanical Properties of the Cold-Drawn Steel Used for Shafts). Steel Yield Strength Brinell Hardness Modulus of Ultimate Tensile Strength (MPa) Designation (MPa) (BHN) Elasticity (GPa) 40C8 667 324 200 200 45C8 696 353 260 208 50C4 747 373 320 201 50C8 765 392 345 212 50C12 706 400 360 205 APPENDIX B (Preferred Standard Sizes of Cold-Draw Steel Shafts in mm). Steel Diameter Size (mm) Price Designation (R/meter length) VAT Excluded 40C8 10, 15, 20, 35, 40, 45, 50, 55, 60, 65, 70, or 75 2 789,08 50C8 250, 270, 280, 300, 400, 500, 530, 600, 700 or 800 3 189.32 45C8 5, 10, 15, 20, 35, 40, 45, 50, 55, 70, 75, 80, 85, 90, 95 or 100 2 879,49 APPENDIX C (Preferred Standard Diameter Sizes of Cold-Draw 817M40 Steel Shafts in mm). 5, 10, 12,14,16, 18, 20, 25, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 125, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 280, 300, 400, 500, 530, 600, 700, 800
The request for this project is to design the diameter of the output shaft of a single reduction gearbox with a 20° pressure angle involute spur gear set. The gearbox consists of two (2) shafts, four (4) bearings, two (2) spur gears, and gearbox steel casing, as shown in Figure 1 below. The gearbox is powered by a 3 kW Power, 50 Hz AC electric motor with a speed of 1440 rpm. The main goal of the gearbox is to reduce the speed to 575 rpm. The gearbox had to abide by the following: 1. The weight of the motor and gears do not add to the bending or shear stresses of the system and will be ignored when doing calculations. 2. The entire system is bolted to a horizontal bedplate and will only be accessible from the top surface. 3. The machine components, including bolts, shafts, and bearings, must all be designed with a factor of safety (ns) as 2.5. ANSWER QUESTIONS 1 TO 5 BELOW. Shaft coupling Bearing Motor Input shaft Figure 1 Output shaft Gears
Transcribed Image Text:The request for this project is to design the diameter of the output shaft of a single reduction gearbox with a 20° pressure angle involute spur gear set. The gearbox consists of two (2) shafts, four (4) bearings, two (2) spur gears, and gearbox steel casing, as shown in Figure 1 below. The gearbox is powered by a 3 kW Power, 50 Hz AC electric motor with a speed of 1440 rpm. The main goal of the gearbox is to reduce the speed to 575 rpm. The gearbox had to abide by the following: 1. The weight of the motor and gears do not add to the bending or shear stresses of the system and will be ignored when doing calculations. 2. The entire system is bolted to a horizontal bedplate and will only be accessible from the top surface. 3. The machine components, including bolts, shafts, and bearings, must all be designed with a factor of safety (ns) as 2.5. ANSWER QUESTIONS 1 TO 5 BELOW. Shaft coupling Bearing Motor Input shaft Figure 1 Output shaft Gears
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