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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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