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Indexable Milling Determining Cutting Data

Selecting Tool Body , Insert , and Cutting Data

4 . Choose the tool body :

Choose diameter ( D1 ) and pitch ( Z ) of tool body .

NOTE : Make sure you select the correct shank style for your toolholder . For toolholders , visit widia . com .

5 . Choose the inserts with the WIDIA ™ insert selection guide :

A Determine light machining , general purpose , or heavy machining according to workpiece material . See the Material Overview at the end of the catalogue for material descriptions .

Select the grade given in the insert selection guide . Use the six digit order number to easily place your order . n Insert Selection Guide

Material Group

Light Machining

General Purpose

Heavy Machining

	Geometry	Grade	Geometry	Grade	Geometry	Grade
P1 – P2	. E .. LD	WP40PM	. S .. GD	WP40PM	. S .. HD	WP40PM
P3 – P4	. E .. LD	WP25PM	. S .. GD	WP35CM	. S .. HD	WP35CM
P5 – P6	. E .. LD	WP25PM	. S .. GD	WP35CM	. S .. HD	WP35CM

HNGJ-GD HNPJ-HD HNGJ-HD

n HNGJ-GD

� first choice

� alternate choice

P � � � � � �

M � � � � � � �

K � � � � � �

N S	�	� � � �
H		�

5B catalogue number

cutting
edges	D	L10	S	BS	Rε	hm

TN6520 TN6525 TN6540 TN7535 WK15CM WP25PM WS30PM WP35CM WP40PM

HNGJ0905ANSNGD 12 16 8,58 5,56 1,80 1,20 0,10

3119541 3614650 3037596 3093721 5427370

— 5528974 5895349 5895350

6 . Determine cutting data — with the WIDIA Recommended Speeds and Feeds tables :

� �Recommended Starting Speeds [ SFM ]

Material Group

WP25PM WP35CM WS30PM WP40PM TN6501 THM-U

Choose the recommended speed value according to the workpiece material and grade .

Choose the recommended starting feed rate according to the insert geometry and % of radial engagement ae .

Starting values are given in bold .

1 395 340 325 545 475 445 – – – 355 310 295 – – – – – –

2 330 290 240 335 305 275 – – – 300 260 215 – – – – – –

3 305 260 210 305 275 245 – – – 275 235 190 – – – – – –

4 270 220 180 230 210 190 – – – 245 205 160 – – – – – –

5 220 205 180 310 275 250 – – – 205 185 160 – – – – – –

6 200 150 120 190 160 130 – – – 180 140 110 – – – – – –

1 245 215 200 245 220 185 270 240 220 235 205 185 – – – – – –

2 220 190 155 220 190 170 245 215 175 210 180 150 – – – – – –

3 170 145 115 175 155 140 185 160 125 155 140 110 – – – – – –

1 275 245 220 355 320 290 – – – – – – – – – – – –

2 215 190 180 280 250 230 – – – – – – – – – – – –

widia . com

3 180 160 145 235 210 190 – – – – – – – – – – – –

n Recommended Starting Feeds [ mm ]

Insert Geometry

NOTE : Use “ Light Machining ” value as starting feed rate .

Programmed Feed per Tooth ( fz ) as a % of Radial Depth of Cut ( ae )

Light Machining

General Purpose

5 % 10 % 20 % 30 % 40 – 100 %

Heavy Machining

Insert Geometry

. F .. LDJ	0,17	0,32	0,65	0,13	0,23	0,47	0,09	0,17	0,35	0,08	0,15	0,31	0,08	0,14	0,28	. F .. LDJ
. E .. LD	0,17	0,50	1,00	0,13	0,36	0,72	0,09	0,27	0,54	0,08	0,23	0,47	0,08	0,21	0,43	. E .. LD
. S .. GD	0,33	0,84	1,35	0,24	0,60	0,97	0,18	0,45	0,72	0,16	0,39	0,63	0,14	0,36	0,57	. S .. GD
. S .. HD	0,33	0,84	1,35	0,24	0,60	0,97	0,18	0,45	0,72	0,16	0,39	0,63	0,14	0,36	0,57	. S .. HD

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