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1. The characteristics and application of adaptors such as collet chuck with steep taper(SK) and collet chuck with hollow taper(HSK) were analyzed and explained.
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2. Taper support Rib : Rib conical taper at the circumferential rib support, in between the cam groove, Roller Cam with the circumference of linear contact.
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3. This milling shank can be matched with Morse taper cutter and Morse taper cutter draw bolt to ream and cut.
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4. The chuck can be connected with machine tools through Morse taper, Jarno taper, metric screw thread, or inch screw thread.
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5. There are all together 7 pieces of valve seat reamer. 3 for air intake valve and 3 for exhaust valve, and they are valve seat inner taper, outside taper and valve working surface reamers.
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