Product Performance: Three stands of the product are made by high quality material of
chrome steel.The product itself,appearance,nut and pull wheel is
precisely made by the high quality steet.With then advanced
technology of whole quenching process,the backward of thrn chuck is
processed with high accuracy.The product is very strong,resistant
and precise with the function of holding capacity, strong
whack-resistance and high accuracy.At the same time,the design of
the product appearance is very beautiful. Application Range:Specially applied in process of heavy_duty tasks, also can be used
in industries at high frequency.Often used in drilling tools such
as lathe,milling machine,grinding machine and wood machinery.Help
you raise the working effiency and reduce the wastage of knife
tools. Accuracy Inspection:The maximum radial skip is less than 0.15mm tested by two rods,
which id better than Level A accordingto the mational standard,The
product with radial skip less than 0.06mm can be producted by the
company. Technical Specifications:The hardness of drill chuck can reach HRC47-50.The hardness of
drill chuck claw,nut can reach HRC48-50.The rear taper is painted
for the inspection with drill clamp cone gauge(GB-11855).The
contact ratio is over 90%,much higher than the standard of
70%.Torque:With input 50N.M and output 30N.M,the product is better
than of national standard of 24N.M input and 14N.M output.