Inch Precision Accuracy Ball Screw Features
Precision Rolled thread ball screws are offered from 5/8" to 2 1/4" diameters with leads of 0.200" to 0.500" depending on diameter. Nook Industries uses the latest in CNC thread rolling technology and state of the art CNC induction heat treatment to manufacture a rolled screw with accuracy approaching precision ground at a substantially lower cost. XPR ball screws fill the need for applications that don’t warrant the expense for ground screws but still require more precise positioning than that offered by commercial grade screws. All are offered with internally preloaded non-adjustable ball nuts with either an integral flange or an OD thread which allows for the use of a custom flange to fit a specific need.
Standard Ground Thread ball screws are available in diameters from 5/8" to 2 1/2" in lengths up to 120". Threads are ground from high carbon alloy steel that has been induction heat treated to a depth greater than the thread. Standard stocked inch precision ball screws have a lead accuracy tolerance of ±0.0005 in/ft and are supplied with internally preloaded nuts which must be factory assembled. Ground screws are used for applications that require smooth operation, precise positioning, and repeatability.
For convenience, XPR AND SGT screws can be supplied completely machined and assembled with nuts and EZZE-MOUNTS ready for assembly. Should a standard assembly not fit the application, Nook can machine the screw to your specific design requirements. Ball nut configurations can be engineered to application requirements.
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