1. High Reliability
HSK has very stringent quality control standards covering every production process. With proper lubrication and use,trouble-free operation for an extended period of time is possible.
Efficiency  1(%) |
 |
Lead Angle (Degrees) |
|
|
Normal Usage (to convert rotary motion to linear motion) |
(  : friction coefficient) |
 |
T = Torque Kgf¡P cm |
| P = Force Kgf |
| l = Lead cm |
| 1 = Efficiency |
|
2. Smooth Operation
The high efficiency of ball screws is vastly superior to conventional screws as shown in Fig.1.1.The torque required is less than 30%. Linear motion can be easily changed from rotary motion.
Reverse Efficiency
2 (%) |
 |
Lead Angle (Degrees) |
|
|
Special Usage (to convert rotary motion to linear motion) |
( : friction coefficient) |
 |
T = Torque Kgf¡P cm |
| P = Force Kgf |
| l = Lead cm |
| 2 = Efficiency |
|
3. 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. Therefore,both low torque and high rigidity can be obtained simultaneously. HSK ball screws have gothic arch groove profiles (Fig.1.2)which allow these conditions to be achieved.
Fig.1.2 Groove Shape of BSK Precision Ball Screw
4. 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)
5. 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 and Fig.1.5
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 |
Fig.1.5 Heat Treatment | 
