New 12.00-13.99 mm (.472”-.551”) Gundrills Carrying Inserts with 2 Cutting Edges
NPA 23/2019 Metric and Inch
Highlights
ISCAR and UNITAC are expanding the lower diameter range of the GD-DH gundrill family by adding drills in the diameter range of 12.0 to 13.99 mm (.472”-.551”) carrying a new LOGT 060204R-DT insert featuring 2 chip splitting cutting edges.
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
Brazed Body
Large Cooling Hole
- Efficient lubrication
- Longer life of inserts and guide pads
Steel Body
- Extremely high rigidity
- Simple direct mounting setup
Flange
- Superior rigidity for higher speeds and feeds
TEST REPORT
Workpiece material: 34CrMo4 (SCM420H)
Operation: Drilling
Part name: Shaft
Coolant: Emulsion
|
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%
TEST REPORT
Workpiece material: SAE 4340 (SNCM435H)
Operation: Drilling
Part name: Shaft
Coolant: Oil
|
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%
TEST REPORT
Workpiece material: 42CrMo4 (SCM440)
Operation: Drilling
Part name: Mold
Coolant: Emulsion
|
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%
Material Groups (INCH)
Machining Recommendations for TRIDEEP Drills (INCH)
Material Groups
Machining Recommendations for TRIDEEP Drills (Metric)
The NPA23-2019's pdf file: (includes Inquiry Form)
View (PDF) or
Download (ZIP)