Ballscrew claims "world's smallest" title
A
Steinmeyer UK product story
Edited by the Engineeringtalk editorial team
Sep 1, 2003
New ultraminiature ball screws are available in diameters as small as 3mm with choice of 1 or 0.5mm pitch.
New ultraminiature ball screws are available in diameters as small as 3mm with choice of 1 or 0.5mm pitch.
Steinmeyer now offers an extensive range of miniature screws from 16mm diameter (with up to 30mm pitch), down to this incredibly tiny 3mm diameter.
The screws are equipped with one of four types of ball nuts, with or without preload.
By using Steinmeyer's internal ball deflector returns instead of external tubes, the nuts offer smooth low noise operation in a compact size.
Several standard lengths are included in the production programme, complete with finished ends.
And, as with all other Steinmeyer ball screws, custom lengths are available with journals machined to a control drawing.
The screws are manufactured from standard tool steel, hardened and then precision ground to meet ISO tolerances from T0 to T5.
Stainless-steel material is available as an option.
For maximum application flexibility, Steinmeyer miniature screws are offered with a choice of four nut types: series 1112, a cylindrical single nut with convenient attaching thread, available with play or preloaded using oversized balls; series 1214, a compact cylindrical single nut with fitting key, available with play or preloaded using oversized balls; series 1412, a single nut with flange, available with play or preloaded using oversize balls; and series 1510, a spring preloaded double nut, that effectively compensates for torque variations due to inaccuracies in the ground thread.
The result is extremely smooth motion with near constant idling torque - a critical requirement in many scanning applications.
Applications for miniature ball screws include semiconductor production machines, inspection equipment, microscope stages, fibre-optic assembly mechanisms, medical devices, miniature robotics and analytical equipment.
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