BaerCoil HSSE Machine Tap M 8 x 1.0 STI (oversized for wire thread inserts) - ECO for blind holes

€25.58*

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EAN 4058462105289
Item no B3712
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Product information

BaerCoil HSSE Machine Tap M 8 x 1.0 STI (oversized for wire thread inserts) - ECO for blind holes


BaerCoil® machine taps are mainly used for thread repair or thread reinforcement in connection with wire thread inserts. With this BaerCoil® screw tap, a finished thread with oversize can be cut in one operation as a holding thread for wire thread inserts of the dimension MF 8 x 1.0.
The holding thread for MF 8 x 1.0 thread inserts is also called STI thread (screw thread insert) or STI thread (in English Screw Thread Insert) and has an oversize so that the normal starting thread MF 8 x 1.0 is restored after installation of the thread insert.

Our machine taps are powerful and reliable taps for efficient machining of threads in one operation on the machine. Machine taps are used primarily in industrial manufacturing. They are suitable for CNC machines, thread cutting machines, cordless drills and pneumatic thread cutting machines, among others. As they are characterised by high efficiency and low production costs, they are often used in series production. The thread is cut by machine in one operation.

The machine tap can be used for blind holes, as the short gate and the swirl groove shape ensure that the chips are discharged to the rear

Dimensions

Diameter 8
Nominal diameter in inches 0,366
Nominal diameter in mm 9,3
Pitch 1,0
Pitch in mm 1
Dimension MF 8 x 1,0 EG/STI
Square 8,0 mm

Characteristics

Product group Screw taps
Wire thread inserts - Taps
Product type BaerCoil screw taps
Thread standard MF EG/STI: Metric ISO fine thread for wire thread inserts according to DIN 8140-2
Tolerance ISO2/6H mod. (ISO1/4H)
Direction Right
Standard Factory standard
Tensile strength at room temperature up to 900 N/mm² | 27.1 HRC
Material HSSE bright

Schematic representation of  Core hole diameter
Core hole diameter
8.3 mm
Schematic representation of Bild Lochtyp
Hole type
Blind hole up to 3 x D
Schematic representation of Bild Form
Form / Geometry
Form C 35° RSP
Schematic representation of Bild Anschnitt
Chamfer
2-3 threads
Schematic representation of Bild Spanabfuhr
Chip removal
Chips are removed upwards against the cutting direction
Schematic representation of Bild Kühlung
Cooling
External cooling and lubrication
Schematic representation of Bild Material
Material
HSSE bright
Schematic representation of Bild Zugfestigkeit
Tensile strength at room temperature
up to 900 N/mm² | 27.1 HRC
Schematic representation of Tolerance: ISO2/6H mod. (ISO1/4H)
Tolerance
ISO2/6H mod. (ISO1/4H)

Applications

All normal uses for thread repair and for thread reinforcement of blind hole threads.

Technical drawing

Technical drawing hand tap with reinforced shank
D1 9,3 mm
D2 10 mm
L1 80 mm
L2 24 mm
Diameter 8
Square 8,0 mm

Application – Sample materials for taps

Unalloyed construction steels Cutting speed vc in m/min
1.0037 St 37-2 5 - 12
1.0044 St 44-2 5 - 12
1.0039 S 235JRG1+CR 5 - 12
1.0060 St 60-2 5 - 10
Free-cutting steels Cutting speed vc in m/min
1.0718 9 SMnPb 28 5 - 12
1.0721 10 S 20 5 - 12
1.0736 9 SMn 36 5 - 12
1.0726 35 S 20 5 - 10
Cast steel Cutting speed vc in m/min
1.0420 GS-38 8 - 15
1.1120 GS-20 Mn 5 5 - 15
1.5633 GS-24 Ni 8 5 - 12
1.7379 GS-18 CrMo 9 10 5 - 12
Alloyed construction steels Cutting speed vc in m/min
1.5415 15 Mo 3 5 - 12
1.5622 14 Ni 6 5 - 10
1.7335 13 CrMo 4 4 5 - 10
1.7715 14 MoV 6 3 5 - 10

Cutting speed vc [m/min] = (Outer diameter * π * speed) / 1000

Rotation speed n [1/min] = (Cutting speed in m/min * 1000) / (Outer diameter * π)

Feedrate programming [mm/min] = speed * pitch

Please note that the above cutting speeds are indicative and must be adjusted depending on lubrication and actuation.

Video instructions

Accessories

Zubehör

slide 4 to 6 of 11

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