We Don,t sell Ballscrews Linear Bearings or other transmission products, however for great service and price we recommend homeshop@homeshopcnc.com
for all premium grade rolled leadscrew products.

Click Here for other Linear Bearing transmission products

Pricing below as of 12th March 2005

THOMSON PRECISION ROLLED BALLSCREW ROD

Thomson screws are made of high-quality alloy steel hardened to Rc 56-60. Lead accuracy is .004 / ft. Straightness is within .010 / ft and will not deviate more  than .030" for an entire 6 foot length

BALLSCREW PRICING SCHEDULE:

 Thomson Precision Rolled Ballscew Stock- .631 x .2 Pitch            $1.20 / inch

 NOTE: All cutting is free of charge.

 Non-Preloaded Ballnut                                                                       $25/ ea
 Single Nut-Preloaded

(must be loaded to screw by homeshopcnc)                                       $55/ ea
* Contact us for quotes on end machining!

       Please contact our good friend at >> Email: homeshop@homeshopcnc.com

Click Here for >> Ballscrew FAQ

Click Here for timing belts gears rack and pinion >>https://sdp-si.com/eStore/

Click Here for low cost Linear Bearing and Shafting products >>http://www.vxb.com/

Ballscrew FAQ:

Q. What's the advantage of a double nut over a preloaded single nut?

A. The two chief advantages are: 1) The preload is adjustable from  light to heavy with a double nut set-up and 2) Over time, wear is likely to occur producing backlash. This can be adjusted out with a double nut whereas a preloaded single nut would have to have the balls replaced.

Q. How much backlash does a standard single nut assembly have?

A. From .001-.004 typically. The variance is due to fluctuation in both the ballnut ID and the ballscrew OD.

Q. There's a kind of crunching going on in my preloaded ballnut assembly. What's wrong?

A. Probably nothing. It's not uncommon for the balls to clutter a bit while passing through the return tube. As long as the elements roll and do not skid, you should be okay.

Q. I have felt zero backlash ballnuts turn on the screw before and they were silky smooth. Your unit is not as smooth, why?

A. There will always be a noticeable difference in feel between a ground ballscrew and a rolled ballscrew. Precision rolled ballscrews when preloaded are not as smooth but are a fraction of the cost.

(Back to top)

Last Modified Monday, March 14, 2005