Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Sliding VS Rolling linear slides for machinery

Status
Not open for further replies.

gkan

Bioengineer
Joined
Jan 8, 2011
Messages
19
Location
GR
Greetings everyone,

I have a general question regarding machinery design. I have noticed that conventional machines only have dovetail slides while CNC machines usually have linear ball bearings for their axes. Even really expensive and precise conventional machines like Hardinge have sliding ways while precision CNC machinery (the ones I have seen anyway) have linear ball bearings. So I was curious, why is that? In general, isn't it true that sliding ways are generally a lot more rigid and durable than ball bearings?

Thanks in advance,

George
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top