Bearing support for vertical shaft

Click For Summary
SUMMARY

The discussion centers on the selection of bearings for a 12-inch vertical shaft supported at both ends, with an estimated axial load of 5 lbs from the shaft and gears. The shaft operates at 1000 RPM, prompting the inquiry into whether standard roller or ball bearings suffice for the bottom bearing or if a specialized bearing design is necessary. The consensus suggests that a pair of angular contact ball bearings is the most suitable and cost-effective solution for handling the axial load effectively.

PREREQUISITES
  • Understanding of bearing types, specifically roller and ball bearings
  • Knowledge of angular contact ball bearings and their applications
  • Familiarity with axial load considerations in rotating shafts
  • Basic principles of rotational dynamics and RPM impact on bearing selection
NEXT STEPS
  • Research the specifications and load ratings of angular contact ball bearings
  • Explore the differences between standard roller bearings and angular contact bearings
  • Investigate the impact of RPM on bearing performance and lifespan
  • Learn about bearing installation techniques for vertical shafts
USEFUL FOR

Mechanical engineers, hobbyists designing rotating machinery, and anyone involved in selecting bearings for vertical shaft applications.

InterestedGuy
Messages
4
Reaction score
0
I have short (12") vertical shaft. The shaft will supported at the top and bottom by a bearing. The only axial load will be from the weight of the shaft and gears on the shaft. I'll estimate the total weight of the shaft and gears at around 5 lbs. Shaft will rotate at around 1000 RPM.

From a practical standpoint, do you think I can get away with a standard roller or ball bearing for the bottom bearing, or do I need a bearing design to handle axial load? If so, any suggestions what the cheapest kind of bearing that would work for the bottom bearing?
 
Engineering news on Phys.org
A pair of angular contact ball bearings would be suitable .
 

Similar threads

A few points regarding my wind turbine
  • · Replies 24 ·
Replies
24
Views
2K
Torque calculations: Rotating vertical shaft
  • · Replies 5 ·
Replies
5
Views
5K
Cylindrical roller thrust bearing: Inherent sliders?
  • · Replies 9 ·
Replies
9
Views
1K
How to Measure Torque Required for motor to spin a rotating shaft?
  • · Replies 3 ·
Replies
3
Views
5K
How to Design an Airtight Tubing with a Motor Shaft?
  • · Replies 5 ·
Replies
5
Views
2K
Overhung load, extending output shaft
  • · Replies 1 ·
Replies
1
Views
3K
Ball bearing cantilever system with maximal moment of inertia
  • · Replies 16 ·
Replies
16
Views
2K
Load on a journal bearing in a vertical shaft
  • · Replies 3 ·
Replies
3
Views
7K
Internal Combustion engine - evolution regarding parasitics
  • · Replies 2 ·
Replies
2
Views
1K
Troubleshooting Jerky Motion of a Robot Arm: Expert Tips & Solutions
  • · Replies 3 ·
Replies
3
Views
3K