Highlights

GD-DH
Gundrills for machining centers and gundrill machines, carrying LOGT inserts that feature 2 chip splitting cutting edges, and a wiper for high hole surface quality and high feed.
The drills are now available in the diameter range of Ø12 - Ø13.99 mm (.472”-.551”) and in 15, 20 and 25 drilling length to diameter ratios.
Longer gundrills up to 2400 mm (95”) length can be supplied on request.
The new LOGT 060204R-DT IC908 insert features 2 chip splitting cutting edges, a positive rake chipbreaker, and a wiper for high hole surface quality.
The new insert is made from IC908, a versatile PVD coated grade.

Advantages

• Deep drills with a 2 cutting edged insert
• Highly accurate peripherally ground insert, providing high hole diameter accuracy of IT10
• Produces narrow chips for efficient chip evacuation, enabling higher feed rates compared to other drills available in the market
• A wiper on the insert provides extra fine surface finish
• Direct insert mounting - no adjustment needed for accurate hole diameter
• Can carry new economical solid carbide guide pads

Availability
GD-DH gundrills are in stock. Longer GD-DH gundrills can be supplied upon request from UNITAC. For European markets, these gundrills are also available from OUTILTEC.
*All tool lists are available on the new product catalog.



GD-DHL Metric
Gundrills Carrying Indexable Inserts with 2 Chip Splitting Cutting Edges and a Wiper for High Hole Surface Quality
• Note: Gundrills can be supplied with up to 2400 mm length on request.
• Inserts and guide pads should be ordered separately (they are not included with the tools).
• For user guide and cutting conditions, see pages
• Preventative measures:
• Do NOT operate the deep hole drill at full speed before engaging the guide hole.
• Enter the guide hole slowly at a speed of 50 - 100 rpm.
(1) Master insert identification

GD-DH (.500) Inch
Gundrills Carrying Indexable Inserts with 2 Chip Splitting Cutting Edges and a Wiper for High Hole Surface Quality
• Note: Gundrills can be supplied with up to 95" length on request.
• Inserts and guide pads should be ordered separately (they are not included with the tools).
• For user guide and cutting conditions, see pages
• Preventative measures:
• Do NOT operate the deep hole drill at full speed before engaging the guide hole.
• Enter the guide hole slowly at a speed of 50 - 100 rpm.
(1) Master insert identification


GD-DH (12-13.5) Metric
Gundrills Carrying Indexable Inserts with 2 Chip Splitting Cutting Edges and a Wiper for High Hole Surface Qualityy
• Note: Gundrills can be supplied with up to 2400 mm length on request.
• Inserts and guide pads should be ordered separately (they are not included with the tools).
• Preventative measures:
• Do NOT operate the deep hole drill at full speed before engaging the guide hole.
• Enter the guide hole slowly at a speed of 50 - 100 rpm.
(1) Master insert identification

LOGT
Deep Drilling Inserts with 2 Chip Splitting Cutting Edges, Positive Rake Chipbreaker and a Wiper

Metric

Inch




GPS
Deep Drilling Solid Carbide Guide Pads

Metric

Inch

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	ISCAR	Competitor
Body	GD-DH 12.00-M20-20D-06	Brazed Gundrill
Insert	LOGT 060204R-DT IC908
Guide pad	GPS-04-16-055 IC908
Cutting speed Vc (m/min)	150 (495 sfm)	70 (230 sfm)
Feed rate f (mm/rev)	0.13 (.0051 ipr)	0.03 (.0012 ipr)
Table feed Vf (mm/min)	517 (20.35 inch/min)	56 (2.2 inch/min)
Hole diameter D (mm)	12 (.472”)	12 (.472”)
Hole depth	233 (9.2”)	233 (9.2”)

Result: Productivity is increased by 820%

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	ISCAR	Competitor
Body	GD-DH 13.00-1100-M20-06	Brazed Gundrill
Insert	LOGT 060204R-DT IC908
Guide pad	GPS-04-16-055 IC908
Cutting speed Vc (m/min)	60 (200 sfm)	60 (200 sfm)
Feed rate f (mm/rev)	0.068 (.0027 ipr)	0.05 (.002 ipr)
Table feed Vf (mm/min)	100 (4 inch/min)	74 (3 inch/min)
Hole diameter D (mm)	13 (.512”)	13 (.512”)
Hole depth	372 (14.65”)	372 (14.65”)

Result: Productivity is increased by 36%

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	ISCAR	Competitor
Body	GD-DHL 12.00X1650-U03	Brazed Gundrill
Insert	LOGT 060204R-DT IC908
Guide pad	GPS-04-16-055 IC908
Cutting speed Vc (m/min)	75 (250 sfm)	53 (175 sfm)
Feed rate f (mm/rev)	0.078 (.003 ipr)	0.021 (.0008 ipr)
Table feed Vf (mm/min)	156 (6.15 inch/min)	30 (1.20 inch/min)
Hole diameter D (mm)	12 (.472”)	12 (.472”)
Hole depth	380 (15”)	380 (15”)

Result: Productivity is increased by 425%

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Material Groups (INCH)



Machining Recommendations for TRIDEEP Drills (INCH)

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Material Groups



Machining Recommendations for TRIDEEP Drills (Metric)



The NPA23-2019's pdf file: (includes Inquiry Form) View (PDF) or Download (ZIP)