Case Study

Opening Drill

Opening Drill

A l l i e d r e c o mme n d e d t h e O p e n i n g D r i l l ® i t e m n u mb e r O P 3 - 1 L - S S 1 . 5 . T h e t o o l i n g r a n a t a s p e e d o f 5 0 9 R P M, 0 . 0 0 4 I P R ( 0 , 1 0 mm/ r e v ) , wh i c h r e s u l t e d i n 2 . 0 4 I P M ( 5 1 , 8 2 mm/ mi n ) . T h e O p e n i n g D r i l l ® h a d a c y c l e t i me o f 3 . 5 mi n u t e s p e r p a r t o n j u s t o n e p a s s p e r h o l e , a n d a n e q u a l t o o l l i

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