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93° Forward Step Turning: Turning multi-stage longitudinal steps and tapered internal channels smoothly without face rubbing
— Aerospace Machining Group (USA)
The 91-degree approach angle gives a perfect clean step
protecting the insert even during the intense heat of high-speed machining
but alignment is key to preventing vibration
BEYOND R390-C12-12-120-1T Indexable Square Shoulder Milling Cutter Shank (12mm / 0.47" Shank, 12mm Cutting Dia, 120mm Reach) right-hand turning insert 93° Forward Step Turning: TurningBEYOND R390 C12 12 120 1T Indexable Milling Cutter Shank ISO ANSI Standard Square Shoulder Milling Tool Holder 120mm Reach C12 Straight Shank for R390 11T3 Inserts IMPORTANT NOTICE DISCLAIMER: Insert Disambiguation Indexable Milling Cutter Shank Body Only. Carbide inserts shown in product images are for demonstration and mounting reference only. Inserts are NOT included with the tool holder and must be purchased separately. Compatible inserts: R390
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