high lead ball screw

high lead ball screw
1.High durability and Preload  
  
When axial play is minimized in conventional screw-nut assemblies, the actuating torque becomes excessive and the operation is not smooth. The axial play in TBI precision ball screws may be reduced to zero by preloading and a light smooth operation is still possible.

2.Circulation Method

Fig.1.3 is ball return tube method. (T Type, E Type)
Fig.1.4 is ball defelector method. (I Type, K Type)

3.High Durability

Rigidly selected materials, intensive heat treating and processing techniques, backed by years of experience, have resulted in the most durable ball screws manufactured.(As show Table 1.1  )

Material and Heat Treatment

Item	Material	Heat Treatment	Hardness
Screw	SCM450 S55C	Induction Heating Hardening	HRC 58° ~ 62°
Nut	SCM415	Carbonizing Hardening	HRC 58° ~ 62°
Stell Ball	SUJ2		HRC 60° Up