The screw shaft is the component of the ball screw that receives rotational force for it to rotate about its axis; this is translated to linear motion. The power to rotate the shaft is supplied by a motor, which is situated on its end.
The screw shaft is a long cylindrical shaft that has a continuous groove, called the ball groove, that runs helically around the length of its shaft, which is referred to as the thread of the screw.
The ball groove serves as the pathway for the rolling ball bearings. The ball groove profile of a ball screw may either be a semi-circular arc or a gothic arc. The semi-circular arc profile is formed from a single arc, while the gothic arc profile has an ogival shape formed from two arcs. The two groove profiles differ on the contact points they touch on the ball.
The ball screw is identified as a right-hand ball screw if the groove is traced in a clockwise direction around the screw shaft and slants to the right. It is a left-hand ball screw if the groove runs in a counterclockwise direction and it slants to the left.
Here below is our Capability of the ball screw parts:
Product range: Ø5 mm to Ø160 mm with different leads and different lengths 
Recirculation type: Internal, External, Endcap 
Nut type: Single Nut and Double Nut. 
Lead range: 01 to 50mm 
Processing: Rolled and Ground 
Length: 6000m Max 
Material: GCr15, S55C, 50CrMo4, SUS303, SUS316, 9Cr18,or other tailored materials per your requirement. 
Advantages: High speed & mechanically efficiency, low noise, heavy load, long life time, low power consuming mechanism, low starting torque.
Lead time: 2-3 wks