• Support PF! Buy your school textbooks, materials and every day products Here!

Gear Problems

  • Thread starter erader2
  • Start date
  • #1
1
0

Homework Statement


A belt conveyor with a 1-foot diameter is driven by an electric motor. The conveyor must travel at 300 linear feet per minute while the motor turns at 1760 RPM. Design a gear train to connect the motor and conveyor and choose gears from McMaster-Carr.


Homework Equations





The Attempt at a Solution


I calculated the RPM of the conveyor to be 95.5 RPM. I thought the simplest design would be if there was a compound gear on the shaft of the conveyor and the shaft of the electric motor, giving a simple two gear design. However, the calculated gear ratio is 18.4 and I cannot find two gears on the McMaster-Carr website that would give me that gear ratio. I read somewhere that between two spur gears the highest gear ratio is usually 10:1. I don't think a worm gear applies because that is for converting a high speed to a very low speed. Is that correct, or is 95.5 RPM sufficiently slow?
 

Answers and Replies

  • #2
CWatters
Science Advisor
Homework Helper
Gold Member
10,529
2,295
Have you considered 3 gears?

Looks possible and keeps each stage <10:1

PS I haven't actually checked the web site to see if the right gears exist.
 

Related Threads on Gear Problems

  • Last Post
Replies
8
Views
4K
  • Last Post
Replies
1
Views
710
Replies
1
Views
4K
  • Last Post
Replies
0
Views
1K
Replies
0
Views
4K
Replies
1
Views
13K
  • Last Post
Replies
1
Views
522
Replies
1
Views
4K
  • Last Post
Replies
1
Views
1K
  • Last Post
Replies
5
Views
5K
Top