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Ball Screw

High Reliability
TOCO 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.

Smooth Operation
The high efficiency of ball screws is vastly superior to conventional screws. The torque required is less than 30%. Linear motion can be easily changed from rotary motion.

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 TOCO precision ball screws may be reduced to zero by preloading and a light smooth operation is still possible. herefore, both low torque and high rigidity can be obtained simultaneously.TOCO ball screws have gothic arch groove profiles (Fig. 1.2) which allow these conditions to be achieved.

Circulation Method
Ball return tube method.(V、E、S、Y type);Ball defelector method.(I、U、M、K type)

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.

 
Fig. 1.2 Groove Shape of TBI MOTION Precision Ball Screw
Material and Heat Treatment
ITEM MATERIAL HEAT TREATMENT HARDNESS
SCREW SCM450 
S55C 
CF53
INDUCTIOHEATING HARDENING HRC58°~62°
NUT SCM415 CARBONIZING HARDENIN HRC58°~62°
STELL BALL SUJ2   HRC60° UP
Heat Treatment
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