Double nut ball screw

Double nut ball screw
1.High Reliability
Our products with double nut  has very stringent quality control standards covering every production process. Smooth Operation
The torque required is less than 30%. Linear motion can be easily changed from rotary motion.

2.High Rigidity 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.

3.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) 

4.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 Table :

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

keywords:Double nut ball screw/high reliability ball screw/double ball screw bearing