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Countersink 90°, uncoated, External ⌀ Dc: 31mm

Article no.: 216155 Catalog no.: 150395
Price per 1 Piece
Net price: CHF 48.65
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External ⌀ Dc (mm) Price per 1 Piece (incl. VAT)

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Product details

Technical Data

Through-coolant no
Entry of cooling lubricant without cooling lubricant entry
Escape of cooling lubricant without cooling lubricant exit
Feed f 0.25 mm/rev.
Wet maximum suitable
Interface position on the machine
Holder type morse taper MT
Interface coding HOG-MKB2
Holder shape with tang
Holder version dimensionless nominal size without cooling
Dry machining suitable only under restricted conditions
Holder size, no dimensions 2
Length of shank LS 80 mm
Cooling lubricant yes
Cutter diameter, min. Dc min. 4.2 mm
Cutter diameter, max. Dc max. 31 mm
Configurable no
Tolerance of cutter diameter manufacturer tolerance
For hole diameter d 4.2 mm
Flute length Lc 20.8 mm
Taper length 13.4 mm
Number of teeth Z 3
Twist direction right-hand
Angle, 1st step 90 degrees
Pilot pin without guiding pin
Tool material HSS
Machining group N (non-ferrous metals); P (steel)
Cutting media, manufacturer’s designation HSS
Coating uncoated
Interface joint 1
Usable length L1 37 mm
Overall length L 112 mm
Weight 220 g
Cutting direction right-hand cutting
Tool version solid steel
Standard DIN 335 D
Shape letter standard number D
Machining method profile countersinking (SPR)
Colour ring without
Type of product countersink
Feed in steel < 500 N/mm2
Content single part

Identification & Classification

Article number 216155
Catalog number 150395
EAN / GTIN 4045197086938
Manufacturer number 150395 31
Article class 12M
Manufacturer/responsible person Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com

Application Table

Alu plastics
N
70
Aluminium (short chipping)
N
33
Steel < 500 N/mm²
P
28
Steel < 750 N/mm²
P
27
Steel < 900 N/mm²
P
27
wet maximum
 
dry
 

Description

Version:

Countersinks radially relief ground. Chip flutes are ground from solid up to size 31. Chip angle varies with the countersink ⌀ for optimum chip formation. Countersink point and circumference are relief ground and cut easily.
Economy countersink version.

Note:

For countersink bits with shank 6.3 mm (1/4 inch) see Group 67.
For suitable reducing adapters for tools with MT shanks see No. 343000-343530.

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