New Product “Slim Long Bit Holder, Slim Long Bit Holder DX”

Longer bits such as 200mm, 300mm, and 500mm have been more and more demanded these days than before. They are used for tightening screws in hard-to-reach high places or deep places, but they have a disadvantage in terms of cost because they must be replaced when the tip-end is damaged by heavy-load work.

For this reason, various manufacturers also sold bit holders for extensions under the name of long bit holders or extension bit holders, which allow ordinary bits for everyday use to be attached to the tip of the bit holder.

“We received requests from users for “”a slim and lightweight bit holder”” so that it can be inserted and removed smoothly without getting caught in narrow gaps and for “”a bit holder that prevents the center runout due to the shaft bending”.
As a result, we developped the Slim Long Bit Holder series that have the features as below:

(1) the outer diameter of the sleeve chuck is Φ13mm, making it the industry’s thinnest model;

(2) by adopting a pull-type bit attachment, the bit will not come out due to contact with the surroundings when pulling out from a narrow space;

(3) for securing the sufficient strength to prevent bending in spite of lightweight design, the Extra Superalloy steel with a good reputation is used for the hexagonal shaft shank;

(4) the shank is designed to be round type dia.8mm, which prevents bending, from the view that the longer shank tends to generate the loss in the torque transmission; and

(5) at the same time, a rotating grip is equipped so that the shank is firmly held by a hand in order to stabilize the fastening work even though the shank is long and the tip-end is farther from the power tool.”

 

In addition, its good torque transferability allows the use of various tip tools such as socket bits, drills, and grinding wheels, which require a heavy load on the tip, and also allows the use of cutting edges such as Torx and Hex, for which long bit types are not commercially available, thereby expanding the range of use.