BRIED "8" SERIES

Product features:
Ultra-high accuracy & durability, fine reliability. The drill, grip jaw, nut, external sleeve, spanner wheel adopt the superior steel for its manufacture. It employs nowadays the most advanced vacuum heat treatment in the world. It has applied for several patent technologies for this product.
The appllcable range:
Heavy-duty, ultra-heavy duty tasks, it is commonly used in large-size drill bench, miller, CNC and machining centre. It may endure high-speed and strong cutting.
Accuracy inspection：
It utilizes two different diam. and length checkrod to examine the radial skip. Large rod ￠3 length 105mm, small rod ￠6 length 65mm.
The max. radial skip of this product does not exceed 0.12mm. It is 0.16mm higher than the national standard A Level accuracy criterion.
The drill spanner wheel hole hardness is HRC48-50, grip jaw nut is HRC53-55, spanner wheel; external sleeve are HRC48-50.
The rear taper uses the drill clamp cone gauge (GB-118855) for its painted inspection. The contact-time is no less than 85%. It is 70% higher than the national standard. GB/T6087-93 fixed input 24N.M. This product may maximumly input 50N.M. with no damage to various spares of the drill chuck.