R8 taper shank ER collet chucks are typically used on manual milling machines. The R8 taper end fits into a machine spindle and the ER collet nut is compatible with ER collet. The ER32 nut is compatible with the ER32 style collet and the ER40 nut works with the ER40 style collet. ER collets are used to hold all the machine tools with a round shank. These R8 shank ER collet chucks deliver the quality significantly above average on market. The total indicator runout (TIR) is less than 0.0002". The MAX RPM on the manual milling machines is 8,000. The manufacturer of the collet chucks inspects and produces them in a highly sophisticated lab and factory. You can hardly expect the collet chucks from the other MFG are of the same quality.
Features:
Caution
Under normal working conditions, the groove of the R8 works as a guiding function and helps improve the rigidity. When the spindle hole becomes larger, this feature will not function.
Please note that there is no wrench included.
Eccentric Design, ISO 15488:2003(E)The inside of the ER collet nut is intentionally designed like off-centering to help mount the ER collet much easier. It is in accordance with the requirements listed in ISO 15488:2003(E). If it is made symmetrical, the ER collet with the diameter larger than the inside size of the collet nut cannot be installed. | AssembleInsert the ER collet into the nut at an angle. Lock it onto the eccentric groove of the collet nut and push it in. (Insert the cutter right after the step, before connect it to the holder/chuck/arbor.) | InspectionInspect the RPM of the ER collet, ER collet nut, ER collet holder/chuck/arbor, etc. | DissembleTake out the tool bit, press the end of the ER collet until the collet off the position. Push it out of the nut. (after take out the nut out of the holder.) |
Clean all tools and partsThis is an ultra-precision workholding tool. When doing the inspection to ensure that each part is wiped especially clean, and the installation must be in place, otherwise it has a great impact on the accuracy | Spindle AccuracyWhen testing, whether the user's machine tool spindle has errors on the accuracy also has a great impact. So you need to ensure that the accuracy of the spindle of the user's test machine must be high. | ER Collet AccuracyPlease make sure that the accuracy of the ER collet must be high, many ER collets are marked as 0.0005", many of them cannot reach it. | Entire AccuracyIf the accuracy of the collet in the hands of the customer is low, the accuracy of our toolholder is no longer high enough to detect the accuracy. |