Textile Additives,Nno Dispersant,Calcium Lignosulfonate Concrete Admixture Co., Ltd. , http://www.wxchemicals.com In the production, generally, each broach chuck can only be used for one type of self-diameter broach. Therefore, more broaches are required. Chuck. To solve this problem, we designed the broach chuck as shown. The broach chuck not only can broach a key groove of 3 to 6 mm in width, but also can be broached by a round broach or a spline broach having a shank of less than 12 mm by replacing the replaceable sleeve 8.