The name of direct type implies the meaning for direct connection. The assembling of tool holder for direct type drill chuck depends on the tight fitting between Morse taper surfaces by making use of the tight locking of hexagon socket screw to become integrated and achieve the property of highest rigidity.
BT / HSK
There are variety ways for assembling this series of tool holder. For example, it could clamp the diameter of shank drill from 0.3 mm to 13 mm. The requirement for the accuracy could be at 0.05 mm or even more precise. It is one of the popular tool holder in many processing manufacturers.
It is applicable to the machine from the traditional milling machine to CNC milling machine. With its extensive range of application, it could be used in any places where it could satisfy the interface of spindle of tool holder. For example, the tool holder of BT40 type is selected for the spindle cavity of BT40. The tool holder of HSK63A type is selected for the spindle cavity of HSK63A and so on.
SK / CAT
This series of tool holder possesses the strongest advantage on the diversification for the type of assembling no matter it is SK series for European area or CAT series for America area, which even possesses the spindle cavity in HSK series with high rpm and precision if it follows the Morse taper surface, which could be used in random collocation.
Besides, the tool holder of this series possesses the function of automatic locking. When the tool holder is correctly installed on to the spindle for processing, it makes the locking for drill clamped tighter and tighter due to its special structure inside the drill chuck to ensure that the drill shall not be loosen or fallen, which could help for the operators for getting better protection and safety while in application.
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