Features:

Optimized Design

Utilizing computer simulation and finite element analysis, the Cool Type ball screw achieves superior thermal suppression capabilities and a highly reliable structure.

Achieves higher operating speeds and an ultra-high Dm-N value of 200,000. Cool Type ball screws eliminate temperature rise issues caused by high-speed operation. Conversely, their stable thermal control capability enables even higher operating speeds.

Prevents Thermal Deformation

Featuring an optimized heat transfer design, Cool Type ball screws effectively reduce heat generation and prevent thermal deformation.

Increased Durability

In environments with frequent reciprocating operation, heat generation between balls may cause oxidation or decarburization, shortening service life. Cool Type ball screws operate under stable temperature control, enhancing durability.

Extended Lubricant Life

Operating within a temperature-controlled environment prevents lubricant degradation caused by temperature rise, thereby extending lubricant lifespan.

Maintains Constant Temperature and Reduces Machine Warm-up Time

Testing confirms that simultaneous cooling of the nut and screw during high-speed operation of Cool Type ball screws effectively maintains a constant temperature environment, reducing machine warm-up time.

Provides Higher Feeding Accuracy

The cooling function of Cool Type ball screws suppresses thermal deformation, maintaining stable feeding accuracy.

Performance:

For high-speed machine tools, hollow cooling within the screw alone is insufficient to counteract heat generation and thermal deformation during high-speed operation. This is because the nut itself becomes a heat source during high-speed rotation. Test results are shown in Figure 8.3 (under identical test conditions as described below). To ensure precision and longevity during high-speed operation, HIWIN recommends concurrently employing nut cooling and screw cooling (Cool Type I) to address the demanding conditions faced by ball screws at high speeds.