Ball Screw: Difference between revisions
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=Basics= | |||
*A [[Lead Screw]] that Uses Ball Bearings to Reduce Friction | |||
*$136 for 4 feet of 1" screw. 1/4" pitch - means fast travel. -[http://www.constructionknowledge.net/general_technical_knowledge/general_tech_basic_six_simple_machines.php] | *$136 for 4 feet of 1" screw. 1/4" pitch - means fast travel. -[http://www.constructionknowledge.net/general_technical_knowledge/general_tech_basic_six_simple_machines.php] | ||
=calculations= | =calculations= | ||
*425 oz in = 27 lb at inch or 54 at 1/2" of 1" shaft. Pitch of 1/4 inch means 12 mech adv or 650 lb of push minus inefficiencies. | *425 oz in = 27 lb at inch or 54 at 1/2" of 1" shaft. Pitch of 1/4 inch means 12 mech adv or 650 lb of push minus inefficiencies. | ||
*what is torque limit of 1/2" ball screw? | *what is torque limit of 1/2" ball screw? | ||
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*cast iron - $2.6/lb for 2" stock, 1x2 feet | *cast iron - $2.6/lb for 2" stock, 1x2 feet | ||
*2"x8" is $1.6/lb -[http://www.speedymetals.com/pc-4185-8214-2-x-8-a-36-1020-hot-rolled-steel.aspx] | *2"x8" is $1.6/lb -[http://www.speedymetals.com/pc-4185-8214-2-x-8-a-36-1020-hot-rolled-steel.aspx] | ||
=See Also= | |||
*[[Open Source Ball Screw]] | |||
=Useful Links= | |||
*[https://en.wikipedia.org/wiki/Ball_screw The Wikipedia Page on Ball Screws] | |||
Latest revision as of 16:57, 16 December 2019
Basics
- A Lead Screw that Uses Ball Bearings to Reduce Friction
- $136 for 4 feet of 1" screw. 1/4" pitch - means fast travel. -[1]
calculations
- 425 oz in = 27 lb at inch or 54 at 1/2" of 1" shaft. Pitch of 1/4 inch means 12 mech adv or 650 lb of push minus inefficiencies.
- what is torque limit of 1/2" ball screw?
Heavy Steel Slab
- It is $3/lb for 10"x2' or 133 lb - [2]
- cast iron - $2.6/lb for 2" stock, 1x2 feet
- 2"x8" is $1.6/lb -[3]