Your task is to design a full journal bearing to support the crankshaft of an engine. The crankshaft would be attached a journal that would be rotating within the bushing. The maximum speed of rotation of the crankshaft is 6000 rpm. The operating temperature is 130-F. The load on the bearing is 675lbf. The journal diameter has to fit on the crankshaft and has to be 2.5in. The length of the bearing has to be under 1.5in. The oil used in the engine is SAE 50. The performance of your bearing should have a maximum coefficient of friction of 0.04 and a minimum film thickness no lower than 0.001in. Determine the bearing dimensions you will use based on your goals and the charts in your formula sheet.
Your task is to design a full journal bearing to support the crankshaft of an engine. The crankshaft would be attached a journal that would be rotating within the bushing. The maximum speed of rotation of the crankshaft is 6000 rpm. The operating temperature is 130-F. The load on the bearing is 675lbf. The journal diameter has to fit on the crankshaft and has to be 2.5in. The length of the bearing has to be under 1.5in. The oil used in the engine is SAE 50. The performance of your bearing should have a maximum coefficient of friction of 0.04 and a minimum film thickness no lower than 0.001in. Determine the bearing dimensions you will use based on your goals and the charts in your formula sheet.
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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Transcribed Image Text:**Journal Bearing Design Task**
Your task is to design a full journal bearing to support the crankshaft of an engine. The crankshaft would be attached to a journal that would be rotating within the bushing. Here are the specifications:
- **Maximum rotation speed of the crankshaft:** 6000 rpm
- **Operating temperature:** 130°F
- **Load on the bearing:** 675 lbf
**Design Constraints:**
- **Journal diameter:** Must be 2.5 inches to fit on the crankshaft.
- **Bearing length:** Must be under 1.5 inches.
- **Oil used in the engine:** SAE 50
**Performance Requirements:**
- **Maximum coefficient of friction:** 0.04
- **Minimum film thickness:** No lower than 0.001 inches
Your goal is to determine the bearing dimensions based on these requirements and the charts in your formula sheet.
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