ballscrew preload disk

[eloid]

1). Im rebuilding this ballscrew....need some advice for load ballbearings

2). the attached is a picture of new orginal new ball screw, there a spacer disk between the ballnuts what proper name for this preload load disk spacer... im trying to find a replacement part... the other picture shows the unit i want to rebuilt with missing preload spacer where to order this ...what is it called?

[RICHARD ZASTROW]

Kuroda refers to it simply as a "spacer". I suspect the spacer is fit at assembly with the screw to obtain the desired preload for that specific assembly, not necessarily interchangeable. "Custom fit" so to speak.

Dick Z

[eloid]

do you know anyone that sells it the cupped spacer disk that spring loaded

[RICHARD ZASTROW]

A "cupped" disc may not be a simple spacer. Some are ground to maintain a dimension that produces a preload. There is also another type of disc that is not a dimensioned spacer, but is actually a type of spring called a Bellville washer or spring.

The preload is set by drawing each of the nuts toward each other. The closer together, the higher the preload. Using this method, small pitch spacing errors are compensated for by the compliance of the spring/washer. You might want to google "Bellville spring washer".

I noticed in a Nook ballscrew catalog a double nut preloaded with a wave spring. This would function the same as a Bellville but would pobably have different physical dimensions.

Dick Z

[eloid]

thats excatly what im looking for, just didnt know the right name for it
http://www.reidsupply.com/detail.asp...preload%20disc

[Mike Nash]

Also check http://www.mcmaster.com for more choices. They come in inch, metric, various id/od sizes and force ratings.

[eloid]

anyone know what the preload is tyically on ballscrews

[RICHARD ZASTROW]

What is the ballscrew description? Brand name, dia., pitch, ball size etc.?

Dick Z

[eloid]

5/8 .2 pitch ballbearings .123" name brand dont know its a rolled ballscrew
nut stamped rc0605 ...linear set was made by lintech complete unit rails and ball screw and nut.

[RICHARD ZASTROW]

eloid, can you please see if that is the correct part number? I googled Lintech
www.lintechmotion.com products-ballscrew assemblies-r series-RS062 series. You may want to scope this out. It shows all the loads, speeds etc. The preloaded nut for RS062 is shown and mentions it as a Bellville spring/washer but does not give the preload or preload dimensions. They do give some support phone numbers.

I didn't find a RC0605. That may be a part number for that component rather than the assembly. Lintech can probably answer all your questions and supply the appropriate part.

Dick Z

[eloid]

eloid, can you please see if that is the correct part number? I googled Lintech
www.lintechmotion.com products-ballscrew assemblies-r series-RS062 series. You may want to scope this out. It shows all the loads, speeds etc. The preloaded nut for RS062 is shown and mentions it as a Bellville spring/washer but does not give the preload or preload dimensions. They do give some support phone numbers.

I didn't find a RC0605. That may be a part number for that component rather than the assembly. Lintech can probably answer all your questions and supply the appropriate part.

Dick Z

Thats the number stamped on the ball nut.. I have lintech assebly number, and have looked there... I have determined the od and the pitch, no info on vendor located on web etc they use who ever gives them the best price im told. I call them... they want me send the unit down and reburbish it for 2k no thanks.. secoundly ive modified it and extending the rails. so it will void there warranty.