HD4060 Deep Hole Drills

: LEADING POSITION We're in the leading position, is the well-known brand in superhard materials and application in China.

: SITUABLE SOLUTION Provide tailored service in superhard material and tools field, devote to offer comprehensive solution to global customers.

: MASS STOCK There is Large stock for standard tools, noted for our quality any service in Chinese high-end market.

: BEST COOPERATION We had prepared the distributorship and service center in the global key markets, is opening to welcome any cooperation for discussion.

Application

Application Range

·Processing diameter range: 10D-60D

·Effective drilling depth: 400mm

Workpiece: crankshaft Hardness: HRC28-32 Workpiece material: 42CrMo Drilling depth: 150mm Machine: vertical machining center Drilling method: continuous machining
Comparison test	Original inserts	Halnn inserts
Diameter	D8 internal coolant deep hole drill	D8 internal coolant deep hole drill
Vc(m/min)	62.8m/min	62.8m/min
F(mm/min)	500mm/min	500mm/min
n(r/min)	2500r/min	2500r/min
Processed Quantity	180 pcs	220 pcs
Results: Under the same processing parameters, the life of Halnn's insert increased by 22%.

·Material: Stainless steel, steel parts (A3 steel)

·Machine Tool: Vertical machining center

·Drilling Method: Continuous drilling

·Workpiece Hardness: Below HB200

·Cooling Method: Coolant

The hole depth reaches 87mm with a diameter of only 2.9mm, resulting in an extreme length-to-diameter ratio of 40:1, making chip

evacuation very difficult.

Final Test Results

	·Tool Specifications: D2.9mm Internal Coolant Deep Hole Drill
	·Drilling Depth: 87mm
	·Cutting Speed (Vc): 54.6 mm/min
	·Spindle Speed (n): 6000 rpm
	·Original Tool Life: 200 pieces
	·Halnn Drill Life: 280 pieces
	·Tool Life Increased by: 40%
	·Machining Efficiency Improved by: 38.8%