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

AUSTRALIA

Queensland:
Unit 4, 1645 Ipswich Road, Rocklea, 4106
Tel: (07) 3274 3388 Fax: (07) 3274 3400
Martin Corcoran
mcorcoran@linearbearings.com.au

Western Australia:
Unit 2, 55 John Street, Bentley, 6102
Tel: (08) 9358 2444 Fax: (08) 9358 2666
Darren Wilson
DWilson@linearbearings.com.au

South Australia:
2 Belfree Drive, Green Fields, 5108
Tel: (08) 8283 4177 Fax: (08) 8283 4188
Steve Hall
SHall@linearbearings.com.au

Victoria:
2 Corporate Ave, Rowville, 3178
Tel: (03) 9755 6044 Fax: (03) 9755 6088
James Ivanov
jivanov@linearbearings.com.au
New South Wales:
Unit 19, 14 Sheridan Cl. Milperra, 2214
Tel: (02) 9792 7188 Fax: (02) 9792 2810
Greg McConnell
GMcConnell@linearbearings.com.au

New Zealand:
Unit i, 138 Harris Rd, East Tamaki, Auckland
Tel: +64 9 273 9723 Fax: +64 9 273 9725
Peter Clark
pclark@linear.co.nz

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.

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Last Modified Saturday, September 20, 2008